CNC Plasma Cutting Machine

How to set up an Acetylene Torch for Cutting?

2011-10-08T07:38:00.000-07:00

Acetylene Torches Oxy - cut through steel faster than most other cuts tools.Igniting. Acetylene flame.Oxygen heat stability of the flame temperature and speed of the gas from the torch flame from the torch tip.The hot metal. When you increase the flow of oxygen through the heated metal. steel.Properly. Set the cutting flame to cut clean, and keep you safe during the cutting process.

Acetylene Torch for Cutting

Instructions
1.Remove the protector caps from the bottles of oxygen and acetylene.Quickly open and close the valve handles located at the top of each bottle to blow contaminants from the valves.

2.Thread the oxygen regulator (green hose) of the torch onto the valve of the oxygen bottle.Thread the acetylene regulator (red hose) to the acetylene valve.Tighten the regulator nuts with an adjustable wrench.

3.Fully close the gas control knobs located at the base of the torch head.

4.Turn the acetylene valve handle a quarter turn.Adjust the regulator to flow the amount of gas recommended by the torch head manufacturer.Slowly open the valve located at the top of the oxygen tank.Adjust the flow rate of the oxygen to the recommended settings.

5.Turn the acetylene control knob located at the base of the torch head slightly.Place a friction striker in the stream of acetylene gas.Push the handle of the striker to light the torch.Turn the acetylene knob until the flame glows bright orange and does not jump from the torch tip.

6.Slowly open the oxygen control knob until the flame glows a bright blue with a well defined set of center flames.

7.Depress the oxygen level located near the middle of the torch head.The velocity of the flame will increase substantially without causing the flame to go out.Turn off the oxygen and reignite the flame if it goes out before you begin cutting with the torch head.

Plasma Cutting Systems

2011-10-03T06:55:00.000-07:00

Plasma is the fourth state of matter. It consists of ions, positively charged atoms, negatively charged ions (electrons) and positively charged molecules. It also contains neutrally charged atoms. Plasma is a good conductor of electricity. Plasma exists at very high temperatures and is used by plasma cutting systems to cut metals.

Plasma Cutting Systems

Let us see how plasma cutting systems work? A gas is released through a very narrow opening, thereby increasing its high pressure. Before the gas escapes, an electrode is placed in its way that passes an electrical current through the gas. The gas atoms on being stimulated by the electric current produce positively and negatively charged ions. These ions collide with each other and the rest of the gas atoms to produce more ions. In no time, the gas reaches a superheated state or plasma.

Plasma Cutting Machine

Plasma cutting systems are nothing but an electrical circuit that have an electrode acting as a negative terminal (cathode), and the metal sheet to cut, acting as the positive terminal (anode). The plasma jet is attracted towards the metal sheet and at this point, in the operation, can focus as much as 30,000 degrees Fahrenheit or 16,648 degrees Celsius of heat on the metal sheet and melts it. The narrow opening of the nozzle increases the pressure exerted by the gas which also blows away the melted metal, thereby aiding the cutting of the metal sheet. The plasma arc is kept thin and controlled with the help of shield gases.

A plasma cutter is provided with channels to release shield gases which exert pressure and control the plasma arc and keep the plasma jet directed on the metal sheet. Inert or semi-inert gases are used as shield gases to shield the area, where the plasma arc or jet touches the metal. The plasma cutter is also known as a plasma torch. Plasma cutting systems are available as manual and computer-controlled. Let's take a brief look at the latter type.

Importance of Plasma Cutting Safety

2011-09-19T19:58:00.000-07:00

It would be a grave mistake to disregard the important of plasma cutting safety. Just because the plasma cutter is easy to use, that doesn’t make it appropriate for haphazard use. Here are some tips to keep you safe while operating one of these machines.

1. Never operate a plasma cutter in a wet environment. You must understand that the plasma cutter uses electricity to start and stay running. Its electrical circuit lies between the torch and the surface being cut. Anything that comes in contact with the object being cut becomes a part of that electrical circuit including water. Okay, especially water since water conducts electricity just like some metals do. So use a plasma cutter in dry environments only.

Plasma Cutting Safety

2. Do not retrieve cut pieces of metal while you’re cutting. Do not remove work pieces while the grand cable is attached. And do not remove a ground clamp while cutting. Doing so places you at high risk for electrocution. For this very reason, insulated boots and gloves are required equipment in any serious place of business.

3. Make sure the ground cable is well secured onto the piece that’s being cut (NOT the piece that will fall off). Arcing near the ground clamp is a sign that the clamp is damaged, unsafe, and needs replacing. Failing to make a safe and secure connection is a sure-fire way to experience electrical shock. The ground clamp must always remain secured prior to releasing a plasma cutter's trigger.

4. Don't use a plasma cutter without proper eye protection. Eye protection isn't just for shielding flying debris. It’s also for shielding against burning. Plasma cutters produce highly intense ultraviolet and infrared waves that can burn the retina, cause cataracts, and damage the skin even if proper precautions aren’t taken.

5. Keep your plasma cutter away from flammable materials. Don’t store or use your cutter near gasoline or other combustible solutions.

6. If you use a heavy duty plasma cutter - that is, one with a excessive noise level, wear ear protection as well.

7. Use a plasma cutter in a well ventilated area. Plasma cutters melt metal and the gases released are toxic.

Arc Welding Process - Plasma Arc Welding

2011-09-12T21:38:00.000-07:00

Plasma Arc Welding Robots
Plasma Arc Welding Robots (PAW) uses high temperature plasma gas to melt two materials together. This method offers many advantages including faster welding and more precise, deeper welds.

Plasma arc welding robots take this intense application up a notch. Not only do robots offer superior performance, they also save money and time.

How Plasma Arc Welding Works:
The intensity of plasma arc welding is the result of unique torch design. As with other arc welding applications, the arc is created between the tungsten electrode and a work piece, but with plasma arc welding the electrode is encased in a copper nozzle. This nozzle channels the plasma gas and arc through a small hole at the tip.

Plasma Arc Welding

What You Stand to Gain With A Plasma Arc Welding Robot:

Exact Welds
The plasma arc welding application is already known for creating deep, narrow welds. Plasma arc welding with robots is even more consistent and precise. Robots are designed to handle repetitious tasks with ease.

More Savings
Manual plasma arc welding requires greater skill than other applications. With the introduction of robots you will save on time and money that is normally spent training workers. Robots have a terrific return on investment and offer freedom from mistakes and wasted materials.

Danger Removed
Manual plasma arc welding is a painstaking and hazardous process. With robots, workers can oversee the welding process away from the heat and light of the plasma arc welding area. Fewer hazards in the workplace mean more savings.

Faster Throughput
Plasma arc welding robots make a fast process even faster. They are programmed to move efficiently and work continuously.

Conventional Plasma Arc Cutting

2011-09-08T03:08:00.000-07:00

The plasma jet generated by conventional "dry" arc constriction techniques was introduced in 1957 by Union Carbide's Linde Division. In the same year, Dr. Robert Gage obtained a patent, which for 17 years gave Union Carbide a virtual monopoly. This technique could be used to sever any metal at relatively high cutting speeds. The thickness of a plate could range from thin sheet metal to plates as thick as ten inches (250 mm). The cut thickness was ultimately dependent on the current-carrying capacity of the torch and the physical properties of the metal. A heavy duty mechanized torch with a current capacity of 1000 amps could cut through 10-inch thick stainless steel and aluminium. However, in most industrial applications, plate thickness seldom exceeded two inches. In this thickness range, conventional plasma cuts were usually bevelled and had a rounded top edge. Bevelled cuts were a result of an imbalance in the heat input into the cut face. A positive cut angle resulted because the heat energy at the top of the cut dissipated as the arc progressed through the cut.

Plasma Arc Cutting

This heat imbalance was reduced by placing the torch as close as possible to the workpiece and applying the arc constriction principle, as shown in Figure 1. Increased arc constriction caused the temperature profile of the electric arc to become extended and more uniform. Correspondingly, the cut became more square. Unfortunately, the constriction of the conventional nozzle was limited by the tendency of increased constriction to develop two arcs in series, one arc between the electrode and nozzle and a second arc between the nozzle and workpiece.

This phenomenon was known as "double arcing" and damaged both the electrode and nozzle. Double arcing severely limited the extent to which plasma cut quality could be improved. Since the introduction of the plasma arc process in the mid-50's, considerable research has focused on increasing arc constriction without creating double arcing. Plasma arc cutting as performed then is now referred to as "conventional plasma cutting." It can be cumbersome to apply if the user is cutting a wide variety of metals and different plate thicknesses. For example, if the conventional plasma process is used to cut stainless steel, mild steel, and aluminium, it is necessary to use different gases and gas flows for optimum cut quality on all three metals.

Conventional plasma cutting predominated from 1957 to 1970, and often required very expensive gas mixtures of argon and hydrogen.

Plasma cutting gas

2011-09-05T00:55:00.000-07:00

CNC plasma cutting machine, usually have higher no-load voltage and working voltage, in the use of gases such as high ionization energy (ie) air or nitrogen, hydrogen, stable plasma arc required voltage will be higher. When the current, voltage of certain enthalpy of arc to improve is improving and cutting capability is improved. If the enthalpy increases, the diameter of reducing jet velocity, and increase the gas can often gain faster cutting speed and better cutting quality.

1. Oxygen can improve the speed of cutting low carbon steel materials. Use oxygen cutting, cutting mode and flame cutting very imagine, high-temperature high-energy of plasma arc cutting speed faster, but makes use of high temperature oxidation to cooperate with the electrodes, meanwhile to the electrodes arcs, in order to prolong the impact protection of electrode life.

Plasma cutting process

2. Hydrogen is often used as an auxiliary gas and other gas mixture with action, like the name of the H35 (hydrogen gas is 35%, the volume fraction of the argon plasma arc cutting ability) is one of the strongest gases, which mainly benefited from the hydrogen. Because the hydrogen can significantly raise arc voltage, make hydrogen plasma jet has high enthalpy, when blended with argon plasma jet, the cutting ability is greatly increased. General on thickness 70mm above the metal materials, common argon and hydrogen as cutting gas. If use water jet of argon + hydrogen plasma arc further compression, still can obtain higher cutting efficiency.

3. Air contains volume fraction about 78% of nitrogen, so use by the formation of the air cutting with nitrogen and hang slag during cutting very imagination; Air also contained volume fraction about twenty percent of oxygen, because the existence of oxygen with air, the cutting speed of low carbon steel material is also high; Meanwhile the air is the most economic work gas. But when used alone air, there will be cutting hang slag and incision oxidation, increase nitrogen, and electrode and nozzle life lower can also affect work efficiency and cut costs. Because of plasma arc cutting generally use constant-current or steep drop the power supply, the characteristics, current highly increase nozzle changed little, but will make arc length increase and lead to increased arc voltage, thus make arc power increased; But at the same time also can make exposed to the environment, the arc length growth increased the energy loss of arc beam.

In two factors under the condition of the comprehensive function, the former action often offset by completely by the latter, it will make effective cutting energy decreases, and cause cutting capacity reduction. Usually the performance was cutting jet blew force is abate, incision of the lower residual slag increased, the upper edge over melting and appear round, etc. In addition, the plasma jet from the ideology consideration, jet in diameter is leaving muzzle expands outward, nozzle highly increase inevitably lead to the incision width increasing. So, choose as far as possible to improve small nozzle height cutting speed and cutting quality are beneficial, but, nozzle height is too low may cause the double arc phenomenon. Adopt ceramic nozzles outside can be set to zero, nozzle height vent end direct contact with that is cut surface, can obtain good effect.

CNC Plasma Cutting Machine

4. Nitrogen is a kind of common work in a higher gas, power supply voltage conditions, nitrogen plasma arc has better stability and argon gas higher jet energy than, even if it is cutting the liquid metal viscosity materials such as stainless steel and nickel-based alloy, incision of inferior hang slag quantity are few. Nitrogen can be used alone, also can use with other gas mixture, such as automation cutting often use nitrogen or air as gas, this two kinds of gas has become the standard gas high-speed cutting carbon steels. Sometimes nitrogen are being used oxygen plasma arc cutting of arcs gas.

5. Argon in high temperature and almost not with any metal happening reaction, argon CNC plasma cutting machine, very stable. And by use of the nozzle with electrodes have higher service life. But the argon plasma arc voltage, low enthalpy is not high, cutting ability is limited, and air compared the thickness of the cutting cutting about will reduce 25%. In addition, argon protection environment, the surface tension of molten metal larger, than in nitrogen environment around 30% higher, so there will be more hang slag problem. Even use argon and other gas mixture of cutting will also have viscous slag tendency. Therefore,now rarely used alone on pure argon plasma cutting.

Used Plasma Cutters

2011-09-01T11:17:00.000-07:00

Why used Plasma Cutter
You can find used plasma cutters internet and in the actual world. If you discover used plasma cutter you have to make in no doubt that it is in fine condition and, more importantly, you have to find out if the component meets your requirements.

Use the following list of questions to assess any used plasma cutter that you find. When you have the answers, you will be in a much improved position to create a knowledgeable buying result.

Used Plasma Cutters - Manual cut

1. Is the cable insulation worn down from use?

2. Does the sever cut, rated cut, and quality cut of the match what I need?

3. Are the cuts still clean?
4. Has the machine ever been repaired or serviced?

5. Is there still a factory warranty?

6. Is there a power source at my business or home that matches the power requirements of the machine?

7. What is the duty cycle of the unit?

8. Are the diagnostic lights and controls functioning properly?

9. If I buy the machine do I get any consumables?

10. What is the condition of the internal components? (if they are in good condition then the owner probably taken good care of the machine)

Plasma Cutter Operation

Plasma cutter reviews

2011-08-28T02:03:00.000-07:00

There are many ways to cut metal. You might go in for a conventional welding torch but a better option would be to use a plasma cutter. These are tools specially designed for cutting metal, such as stainless steel and aluminum. It employs the latest technology to cut metals accurately. These machines do the tough job of cutting heavy metals effortlessly and within a short time. A few years ago, these tools were considered to be very expensive. But nowadays, plasma cutters can be purchased for approximately $1000, which is quite reasonable. One disadvantage of these tools, is that they make a lot of noise. So it is advised to wear hearing protection devices when these machines are operating.

Plasma cutter reviews are extremely important, especially when it comes to buying this machine. There are a number of websites that provide such reviews. Going through these reviews, you can educate yourself about the benefits and drawbacks of this tool. These reviews may also discuss the various issues associated with plasma cutters. Plasma cutter reviews provide additional knowledge about the machine and are written by people who are already using it. Thus plasma cutter reviews is a medium where people who have tried these machines, can share their experiences. You also get to know whether the user was satisfied with its performance or not. These reviews express what difficulties users may have faced initially. They give an overview of the product that can help you decide, whether it is feasible to purchase this product.

Plasma cutter

Plasma cutter reviews will point out where to find cutters of high quality and at affordable prices. People looking for inexpensive plasma cutters have found these reviews extremely beneficial. Many people are apprehensive about the usage and efficiency of plasma cutters. All these doubts can be cleared by reading these reviews. Some reviews also mention the precautions that should taken when using the machine. You would always like to buy plasma cutters from manufacturers who are well known for their superior quality. Miller plasma cutter, Esab plasma cutter and Hobart plasma cutter are some of the popular brands available in the market. These machines also come in different models. Some are light, while others bulky and heavy. Reading these reviews will help you figure out which is the one that suits your requirements.

Plasma cutter reviews is an easy way to educate yourself about the quality of the product. Buying plasma cutters requires a lot of homework. However, this can be reduced by simply reading these reviews. Most plasma cutters reviews mention that the cutter is efficient and easy to use. They also mention that the tool is a good investment. Many reviews have praised the plasma cutter's ability to cut thicker metals. They have even described it as a tool with unbelievable cutting power.

What Is An Autocad DXF File? And Is It Useful?

2011-08-24T09:12:00.000-07:00

DXF, or Drawing Interchange Format as it known as, is a CAD data file format. It may also be referred to as a Drawing Exchange Format as it does exactly this.

Originally created by Autodesk, the makers of Autocad, the DXF enables data exchange between Autocad programs and other similar programs in the industry. Drawing Interchange Format was created in 1982 for the original Autocad and was used to represent Autocads natural format.

Autocad DXF File

Since then, specifications have been made so that other CAD programs can correctly exchange data. Yet as Autodesk has upgraded Autocad, making it more complex and powerful, the DXF has not been as useful in exchanging and conveying data in other programs.

Since then Autocad has moved onto to the DWG (drawing) file, which stores 3 dimensional design data in a number of CAD programs, including Autocad, IntelliCAD and Caddie. It is also useful in CAD applications which support a variety of CAD files.

The DWG drawing file is likely to be the most popular file format for CAD programs you are likely to come across. Like DXF it was created and implemented by Autodesk, thus the file format is always up to date with AutoCAD technology.

Autocad DXF File

Currently Autodesk have a free DWG viewer, known as Autodesk DWG TrueView, which lets you view both DXF and DWG files without program bias. It enables you to see your 3 dimensional drawings just as you would in AutoCAD. To complement this, they have another program that is free, Design Review, which enables you to open DWG files and use the mark up measures of Autodesk software.

Both DXF and DWG files are in use within the design industry. Autodesk not forgetting this, has put great effort in to enable people to cross use these files in CAD programs and display them via the use of Autocad. Autodesks new freeware has enabled many to share with ease, older or different formats, enabling better communication of ideas within the design industry.

Laser cutting is a good idea

2011-08-22T02:34:00.000-07:00

In the line of engineering, accuracy is of utmost importance. Laser cutting uses machines to help contour metal sheets to create complex looking exterior. The laser beam is around 2 mm in diameter and touches the surface to be cut at power ranging between 1000 to 2000 watts. The process is in fact complementary to the CNC cutting process. While the former is used for exterior molding, the latter is used for interiors.

Laser cutting depends extensively on data from CAD drawings. The inputs are taken directly from here and area used to create flat forms that are extremely complex. The laser cutting process has a 3-axis control which outlines each of the parts depending on the information it has got. Lasers are best used for materials such carbon steel as well as stainless steel.

Laser Cutting

The process is pretty simple and the laser beams are what cut everything in its path. For materials that can be treated with heat, the edges automatically harden around the edges that have been cut. This is especially important if the hardened edges are essential from the functional point of view. But in case threading is also needed, then the hardening process is not really a good thing to happen.

What you should know that if any hole is cut with a laser, the entry point is larger than the exit point in terms of the diameter. The result is always a tapered hole. When it comes to slot corners you are looking at sizes like .75 mm. In the case of laser beam cutting basic concepts of construction such as minimum wall thicknesses as well as hole sizes are not applicable here. Hole sizes here are based on stock thicknesses and can go down to as low as 20% of the thickness desired.

Laser Cutting Machine

The resultant burrs are always smaller when you compare it to the processes of blanking as well as shearing. In fact with the use of 3D lasers the burrs can be completely eliminated removing the need for any additional deburring applications.

What laser cutting essentially does it help you retain accuracy in your work. This allows work to go on smoothly and the end result faultless. It gives customer satisfaction and also improves the efficiency of your agency. Working with laser cutting is ideal for all those in the construction as well as its associated fields. Its creates a win win situation for all.

CNC Cutting

2011-08-15T00:09:00.000-07:00

As with traditional cutting services, CNC machines may utilize knife, laser, water jet, plasma or flame methods depending upon the advantages and disadvantages they offer in specific applications. Machine shops and mass production facilities in a broad range of industrial and commercial settings including aerospace, avionics, automotive, agriculture, food and chemical processing, pharmaceutical, military and defense utilize this particular type of machining in daily operations. An acronym for computer numerical control, CNC machining offers quick, precise and accurate cutting with little interference from the workforce, which all but eliminates human error. The depth and location of each cut is the result of encoded computer instructions fed into the machine. Cutters are capable of operating on up to six different axes of motion for increased access and opportunity to perform operations along the entirety of the object or material. CNC cutting can be performed alone or in conjunction with various other tooling processes depending on the machine or cell configuration. While some machines can perform up to 400 individual operations, others contain more limited tooling apparatus. It is important to consider the broader operations available at a specific CNC machine shop as well as material, dimensional and maximum volume and speed capabilities.

CNC Cutting Machine

Once an accommodating facility is chosen, all CNC work begins with the product design or concept. Highly trained machinists and engineers assist clients in creating a specific schematic. Often computer assisted design (CAD), computer aided manufacturing (CAM) and other software such as photo imaging are used to develop the design, complete with measurements and specifications. These data are then converted into a specific computer language or code that will be read by CNC software. This standardized code directs the actions of the cutting device. Before the automated sequence is activated, however, the raw material or semi-finished product must be loaded into the machine. Either the tooling or the material will be affixed to a rotating spindle with the other component being clamped or vacuumed to a secure surface. In applications where a change of tool is needed, CNC tool changers can be automatically adjusted in as little as two seconds. The final product is a high precision easily reproducible part made in a fraction of the time it would take to manually cut it. The CNC process does not completely eliminate human personnel since the machines require careful supervision and maintenance to ensure continued accuracy. All operations should comply with the regulations set forth by the International Organization for Standardization (ISO), specifically ordinances ISO 9001:2000, ISO 13485:2003, ISO 14001 and ISO/TS 16848:2002 which relate to and define industry specific quality standards.

What is Mach3?

2011-08-10T21:08:00.000-07:00

What is Mach3 and why do I need it?
Mach3 is basically a operating system for your CNC, kind of like windows is to a computer. Mach3 is only a G-code reader and not to be looked at as a G-code processor (CAM software).

Mach3 does have some wizards that will generate G-code, but does not have design capabilities, it can not render (CAD) drawings. Its strict function is to read the G-code and translate it into movement.

General Features
The Mach series of software was originally developed for the home hobbyist, but has quickly turned into one of the most versatile control packages for industrial use as well.

Here are some of the basic features and functions provided by Mach3:

Mach - Program

- Converts a standard PC to a fully featured, 6-axis CNC controller
- Allows direct import of DXF, BMP, JPG, and HPGL files through LazyCam
- Visual Gcode display
- Generates Gcode via LazyCam or Wizards
- Fully customizable interface
- Customizable M-Codes and Macros using VBscript

Mach - Offsets

- Spindle Speed control
- Multiple relay control
- Manual pulse generation
- Video display of machine
- Touch screen ability
- Full screen eligibility

Mach - mdi

- Lathes
- Mills
- Routers
- Lasers
- Plasma
- Engravers
- Gear cutting

Oxy-fuel Cutting and Welding Machines

2011-07-24T18:24:00.000-07:00

Oxy-fuel cutting and welding equipment melt areas with an arc and then use a high-velocity, high-temperature ionized gas to make cuts. The high-velocity ionized gas conducts electricity from the torch of the plasma cutter, heats the workpiece, and then melts the material. The high-velocity stream of ionized gas blows the molten metal away from the workpiece and severs the material. The arc’s contact with the working surface creates a high-heat circuit which can melt a section less than 1/16 in. (1.6mm) wide. The force of the plasma flow creates a fairly clean cut with little or no slag. With some oxy-fuel cutting and welding equipment, the plasma arc travels through the nozzle at a speed of up to 20,000 feet per second, and at temperatures as high as 30,000º F.

Oxy Fuel and Plasma Cutting Machine

There are many different types of oxy-fuel cutting and welding equipment. Examples include plasma cutting torches, plasma torches, and plasma cutters. Plasma cutting torches use compressed air or nitrogen as the cutting gas. They provide narrow-width kerfs and use a water-cooled electrode. Plasma torches produce a high-temperature gas stream by passing the gas to be heated through an electric arc discharge. Typically, a plasma torch has two metallic, tubular electrodes so that the electrical arc flows between the negative and positive electrodes. Plasma cutters are suitable for cutting steel and other electrically-conductive materials. With a plasma cutter, the surface of the metal outside of the cutting area remains cool. Other types of oxy-fuel cutting and welding equipment are also available.

Oxy-fuel cutting and welding equipment are used in many applications. They provide high-quality cuts and fast travel speeds. Some oxy-fuel cutting and welding equipment are used in metal working, switch gear construction, and part fabrication applications. Others are used in the manufacture of heating, ventilation and air conditioning (HVAC) systems. A used oxy-fuel cutting and welding equipment is a remanufactured system that includes components and subassemblies such as torch holders, motor/gearboxes, operator control consoles, bearings and hoses, and cables. A CNC plasma cutting machine can be used to automate the material shaping process. Oxy-fuel cutting and welding equipment should adhere to American National Standards Institute (ANSI) standards

Oxy-Fuel Cutting Machines

2011-07-20T00:25:00.000-07:00

Oxy-Fuel Cutting Machines, Flame Cutting Machines, Portable Cutting Machines
Oxy fuel cutting is a process that makes use of pure oxygen for cutting metals like steel. The oxygen which reacts with steel creates iron oxide. Flames are used to heat the steel to a very high temperature, approximately 1800 F, at which time pure oxygen is applied in a constant stream and this creates the cut. The metal cutting machines based on this oxy fuel cutting technique are known as oxy fuel cutting machines. These oxy-fuel cutting and welding machines make use of high-velocity, high-temperature oxygen gas for making cuts. The high-velocity ionized gas is ejected from the nozzle which is sufficiently hot to heat the workpiece, and then melt the material. The high-velocity stream of ionized gas blows the molten metal away from the workpiece and severs the material.

CNC Oxy Fuel Cutting Machine

There are various types of oxy-fuel flame cutting machines available now-a-days. Some of the examples of oxyfuel machines include portable cutting machines or plasma cutters, shape cutting machines, profile cutting machines.Oxy-fuel cutting machines are suitable for cutting steel and other electrically-conductive metals like aluminium, brass etc. These machines are available in different ranges for cutting the metals upto thickness as required. Generally these machines which are available as portable cutting machines are available in ranges for cutting metal plates ranging from 5mm to 70mm thickness. These cutting machines are also available as shape cutting machines that are generally used for cutting metals into different shapes like circular, flanges, squares, rectangles, straight line etc. These machines are available in ranges to be used in small workshops or large industries. For cutting plates of larger thickness and for large production applications such as in metal fabrication industries generally heavy duty shape cutting machines are used. These machines are generally available for cutting metal plates of thickness ranging from 5mm to 200mm. Now-a-days one can find a wide range of oxy fuelprofile cutting machines in the market with cutting automation for accurate dimensional cutting. These are the CNC oxy-fuel cutting machines and available with programming logic control technology in which PLC controller in the machine displays the drawing and does the cutting operations depending on the programming instructions provided to it. Whatever may be the type of oxy fuel cutting machines these are the ideal equipments for cutting metals.

Programming and nesting software for CNC Plasma

2011-07-18T02:01:00.000-07:00

Programming and nesting software (FastCAM)

FastCAM is a powerful CAD plotting software specially used for number control cutting and it can read CAD DXF files and choose and output the NC files of different controllers ; in addition, it can speed cutting obviously heighten cutting quality and thus improve social and economic benefits.

FastCAM - Software

Plotting System
- Compatibility of plotting software.

- Special Functions to DXF files.

- CAD clearing function.

- CAD compacting function.

- CAD extraction function.

- CAD breaking and ranking functions.

- Bridge function, including continuous bridge, break bridge and interruption bridge.

Cutting Path
- Able to automatically or manually set cutting direction.

- Able to set cutting starting port, finishing point an dcutting sequence.

- Able to set leadin and leadout.

- With the mid-layer function of CAD, able to set and conduct cutting, marking and drilling ect..

Nesting System
- Able to nestle quickly, continuously and automatically by placing hundreds pf parts on many steel plates.

- Able to conduct optimized nesting on the rest steel plates.

- Able to manually interrupt AC automatic nestling and interfere with discharge.

- In the optimized nestling process, able to specify, receive and choose parts and have free horizonal

- movement, rotation and matrix etc.

Verifying System
- Able to have analogue check and change to NC cutting files.

- Able to calculate material cost and processing cost.

- Able to support many controller NC codes and switch among different codes.

- Able to provide many languages that Windows platform supports.

Printing:
- Discharging drawing and name, discharging parts list;

- steel plate size, cutting speed, cutting time and steel plate utilization rate;

- programming parameters and number control codes.

CNC Controller (MicroEDGE, Hypertherm)

2011-07-14T07:51:00.000-07:00

Numeral Control System (MicroEDGE, Hypertherm)

MicroEDGE is specially designed for metal cutting from Hypertherm Automation, it is an CNC controller
based on PC with lowest price. The MicroEDGE provide the most flexibility to OEMs to integrate own looks-it is
easily customizable. It provides OEM to intergrate theirown display, keyboard and mouse etc customized
components.

CNC Controller (MicroEDGE, Hypertherm)

- Shape Wizard Programming – Non professional person program easily

- File’s Read and save – Can read or save from / to memory stick directly

- Plate Alignment – Align plate to table automatically if plate is not straight

- Current Part Edit Function – Can scale, rotaye and mirror the part, which is very flexiable

- Watch Windows – 10 watch windows, can monitor all the I/o signals, position, speeds and process
parameters

- Backup / Forward on Path – Can move Torch backup / forward on path during the cut

- Move the Pierce – Can move to any pierce point of the cutting part easily

- Simple Nest Function – Can make simple nest for the parts

- Power Loss Recovery and Parts Interuption – No need to worry about the power loss during cut, and also

- support interrupting the current cut and resume to cut the last part while other task is finished

- Parameters Setup – Can quickly setup machine’s parameters and cutting process

- Communication Ability – RJ45 and serial Communication are available

- Multi Control Functions – Can Control Dual Gantry, Sensor THC, Command THC, ArcGlide THC, Multistation

- System Diagnostics – Can test CNC ‘s software / hardware and servo motors

- Professional Cut Charts – Intergrate all the Cut Charts of Hypertherm’s plasma power supplys, all process

- data can be generated automatically after selecting material type and thickness

CNC Laser Cutting Machine

2011-07-12T02:24:00.000-07:00

There are various key considerations while operating the CNC Laser Cutting machine.

Below listed are some of them.
- The laser power of the CNC Laser Cutting machine is directly proportional to the speed and the depth of the cut.

- Laser warm up is another important factor in cutting. The laser tube should be kept warm at all times.

- If the laser is not focused properly on the material, it could very well affect the speed of operation.

CNC Laser Cutting Machine

- The laser lens of the CNC Laser Cutting machine might get dirty very quickly depending on the extent to which you perform your cutting operation. So care should be taken to make sure that the lens is cleaned at regular intervals.

- The speed of the cut depends on the thickness of the material that has to be cut.

- Greater the thickness, higher the number of passes required to cut the material.

- The nature of the materials could have many adverse effects. It the material is made of polyvinyl carbonate or fiberglass, it has chances of emitting poisonous gases on burning.

- Air assistance is also important while cutting metals using CNC Laser Cutting machine. Some prevent flaming and some can assist us in the cut.

- There must be some way of holding the material that is to be cut. The most common method is to use a metal grating or a cardboard honeycomb material.

Right now, this machine is considered to be the best machine available in the manufacturing field. So, don’t hesitate to spend a few more on this as it’s a one-time investment which is sure to reap enormous benefits in your business.

CNC Laser Cutting machine

2011-07-07T01:30:00.000-07:00

CNC Laser Cutting machine is hailed as one of the most advanced techniques in manufacturing technology. They are perfectly suited for cutting any kind of metal like stainless steel, aluminum or titanium.

Below are some of the advantages of using a CNC Laser Cutting machine:
- Setup time for this machine is very minimal compared to other technologies

Laser cutting

- Faster engineering time, nearly hundred times faster than the traditional methods.

- Minimum waste or slag is left behind when this machine is used.

- Complex designs can be made very easily using CNC Laser Cutting machine.

- Uniformity in dimensions will be maintained for any number of uses.

- CNC Laser Cutting machine is very effective in manufacturing large volumes of material.

The working mechanism of the CNC Laser Cutting machine is as follows:

A single wavelength of light is projected onto the metal sheet using an optical projection mechanism. The light is caused by the excitation of gas when carbon dioxide is passed through a high voltage system. The light is narrowed down to such a thin line that can be used to cut metals. A nitrogen and oxygen gas mixture is used in this machine that helps in two ways. One is, it enables faster cutting and other is it helps in preventing the vaporization of the metal to give a nice and smooth finish. No waste can be found from the finished product of the CNC Laser Cutting machine and even if there is some, it will be very minimal. A few machines are capable of getting nitrogen even from the air and use it for the laser purposes. The user is well protected by a lid on top of the machine. The top has a special coating that can protect the user’s eyes from the laser light.

Variations of the Plasma Cutting Process

2011-07-05T01:41:00.000-07:00

Precision Plasma Cutting

This process produces superior cut quality on thinner materials, (less than 1/2") at slower speeds. This improved quality is a result of using the latest technology to super constrict the arc, dramatically increasing energy density. The slower speeds are required to allow the motion device to contour more accurately. This process is for mechanized applications only

Precision Plasma Cutting

Conventional Plasma Cutting
This process generally uses a single gas (usually air or nitrogen) that both cools and produces the plasma. Most of these systems are rated at under 100 Amps, for cutting materials under 5/8" thick. Primarily used in hand held applications

Conventional Plasma Cutting

Dual Gas Plasma Cutting
This process utilizes two gases; one for the plasma and one as a shield gas. The shield gas is used to shield the cut area from atmosphere, producing a cleaner cut edge. This is probably the most popular variation, as many different gas combinations can be used to produce the best possible cut quality on a given material.

Dual Gas Plasma Cutting

Water Shield Plasma Cutting
This is a variation of the dual gas process where water is substituted for the shield gas. It produces improved nozzle and workpiece cooling along with better cut quality on stainless steel. This process is for mechanized applications only.

Water Shield Plasma Cutting

Water Injection Plasma Cutting
This process uses a single gas for plasma and utilizes water either radially or swirl injected directly into the arc to greatly improve arc constriction, therefore arc density and temperatures increase. This process is used from 260 to 750 amps for high quality cutting of many materials and thicknesses. This process is for mechanized applications only.

Water Injection Plasma Cutting

Specifications

2011-07-03T06:57:00.000-07:00

Specifications of the CNC Plasma Cutting Table
The robotic CNC plasma cutting table is used to precision cut sheet metal. They are especially useful in mass production. Used with its control software, it provides an operator with a variety of helpful features. It is easy to maintain, and relatively easy to operate too. Here are some of its important and helpful features:

CNC Plasma Cutting Machine

- Using the gears and changing the speed of operation, you can get accurate motion in any horizontal direction

- It has lightweight parts that can control the motion of the machine as required; these also allow for precise cutting at any speed

- Some CNC plasma cutting tables can be adjusted for height

- It can be used for repetitive tasks, producing high quality work at a fast rate and with little supervision

Specifications of the CNC Plasma Cutting Table
The plasma cam CNC plasma cutting table has a cutting area of size 4ft x 4ft. It can cut sheets that are of sizes 4ft x 8ft or 4ft x 10ft. However, the machine can cut metal images that are much longer – up to 20ft. Go here for a refresher on CNC plasma cutting and CNC plasma cutters.

The table requires power with 3amp current for proper operation. The weight of the table is about 300 pounds. The dimensions of the table are about 64 inches wide x 60 inches deep x 90 inches high. The table surface itself is 33 inches high where plasma cam is installed. This table with its plasma machine is much more accurate and precise than just hand-held plasma machines. That is because fixing the machine at one point means that its body and nozzle are not prone to small jerking movements (a symptom of drinking too much coffee or energy drinks). That improves precision of its operation.

CNC plasma cutting

2011-07-01T02:10:00.000-07:00

When deciding on a CNC plasma cutting table, there are many options available in the market. It can be very confusing and make the buying process very difficult. Before deciding on a CNC plasma cutting table, it is better to keep the following in mind

Models and Sizes - The CNC plasma cutting table comes in different models and sizes. It is easy to maintain and offers a wide variety of features. Some of the features are
- Variable speed and gears that provide accurate motion in any direction

- Rigid but lightweight parts offer variable speeds of cutting.

- With every speed, there is precise cutting

- Incorporates height capabilities where the tip will not get hung up

CNC Plasma Cutting Table

The CNC cutting table is a robotic table that incorporates the use of a hand held plasma cutter. It is easy to use and maintain. Small businesses can now use CNC plasma cutting tables and increase productivity and also eliminate production costs and waste materials. Due to the precise cutting, waste is eliminated and a lot of money is saved. This results in the reduction in the cost of production. More of the materials can be used from the same sheet. There is less wastage, so the profit of the company is increased.

The CNC plasma cutting table offers repetitive capabilities with each and every cut. The use of the computer makes it possible to save the program for the specific project and use it again at a later date. Even after continuous use, the end product will be the same as the one that was produced before. So it can be used again and again on different dates as the need may be. Since the table is computer numerically controlled, a lot of time and money is saved and the precision is maintained.

Brands – There are different brands available in the market. The brand of the CNC plasma cutting table will determine the machine’s capabilities.

Since there are many brands and sizes, the buyer should keep his specific needs and budget in mind before he selects and buys a CNC plasma cutting table.

What is Plasma

2011-06-29T00:09:00.000-07:00

What is Plasma? The Fourth State of Matter
One common description of plasma is to describe it as the fourth state of matter. We normally think of the three states of matter as solid, liquid and gas. For a common element, water, these three states are ice, water and steam. The difference between these states relates to their energy levels. When we add energy in the form of heat to ice, the ice melts and forms water. When we add more energy, the water vaporizes into hydrogen and oxygen, in the form of steam. By adding more energy to steam these gases become ionized. This ionization process causes the gas to become electrically conductive. This electrically conductive, ionized gas is called a plasma

How Plasma Cuts Through Metal

Plasma Process

The plasma cutting process, as used in the cutting of electrically conductive metals, utilizes this electrically conductive gas to transfer energy from an electrical power source through a plasma cutting torch to the material being cut.

The basic plasma arc cutting system consists of a power supply, an arc starting circuit and a torch. These system components provide the electrical energy, ionization capability and process control that is necessary to produce high quality, highly productive cuts on a variety of different materials.

The power supply is a constant current DC power source. The open circuit voltage is typically in the range of 240 to 400 VDC. The output current (amperage) of the power supply determines the speed and cut thickness capability of the system. The main function of the power supply is to provide the correct energy to maintain the plasma arc after ionization.

The arc starting circuit is a high frequency generator circuit that produces an AC voltage of 5,000 to 10,000 volts at approximately 2 megahertz. This voltage is used to create a high intensity arc inside the torch to ionize the gas, thereby producing the plasma.

The Torch serves as the holder for the consumable nozzle and electrode, and provides cooling (either gas or water) to these parts. The nozzle and electrode constrict and maintain the plasma jet.

Advantages and disadvantages of Plasma cutting

2011-06-27T02:17:00.000-07:00

In this world, everything has its own pros and cons and even the life is shared with 50% positives and other half with negatives, so the machines are not the exemption. Plasma cutter, the scientific welding machine has some majority percentage of positives; you can ask me what about other few percent. Yes, it has negatives, but depends on our usage and buying. Let us discuss briefly about the pros and cons of this welding machine in brief so that when you go to buy this machine, you can buy it with ease and also you can know buy this machine by knowing its major facts. This plasma cutting machine has been preferred by the industries for more than 50 years and it is one of the preferred methods for cutting the metal.

Plasma Cutting Machine

From 70′s it has occupied the industries in the wide range and offer several advantages than other cutting methods. This welder is one of the fastest welding machines and does the welding process in an accurate way. It requires no preheating so that the torch can begin its cutting immediately. Its speed is up to 500 IPM and it is one of the best versatile welders. It has the capability to pierce, intricate cutting and always believe in one operation. It can effectively cut any electrically conductive metal that is 6″ thick and with its high precision components, it eliminates the cost of some secondary operations. It has the torch head that is computer controlled and creates a clean and sharp cut.

Plasma cutter always gives high cut quality and has less dross and high quality edges. This welder results in high quality production and it is very easy to use. Though the machine may seem complicated, it is capable of producing amazing results. It is safe and offers a quality system that draw smoke away from the operator. It is used by workers and industries in different varieties of condition and it can even cut large sheets of metal. The plasma cutter executes magical results because it uses the basic standards of physics called plasma and this gas has the capacity to weld any kind of metals because it has that much heat capacity. The outside surface remains relatively cool and prevent wrapping and paint damage.

It cuts five times faster than any other welding machines and performs other welding operation that is called as plasma gouging. It can pierce any kind of metal quickly and has adjustable post flow cooling and over current warning facility. This excellent welding machine has only few cons that is it requires frequent replacement of some spare parts if it is not used properly, but it can rectified if the user use it with proper care. The myth surrounding this welder is that it costs more, but it is not true and it is available in cheap prices with warranty and guarantee. So make use of the best welding machines and equip your industry with this excellent scientific welding machine.

CNC plasma cutting table

2011-06-08T01:05:00.000-07:00

What is CNC plasma cutting? CNC plasma cutting is computer numerical control (CNC) plasma cutting and these machines are there since the last 30 years. In other words, the plasma cutting process is computer controlled, although it is the human hand which guides plasma cutting.

To facilitate plasma cutting, CNC plasma cutting table is available in the market. The professional grade CNC plasma cutting table is very easy to use and delivers outstanding cuts, curves and sharp corners.

CNC Plasma Cutting Tables

CNC plasma cutting table is very reliable. It uses the computer to create shapes to be cut and controls the cutting machine. The shapes are much smoother than would be possible with manual instruments. Intricate curves, inside cuts and sharp corners are possible with the CNC plasma cutting table.

When deciding on a CNC plasma cutting table, there are many options available in the market. It can be very confusing and make the buying process very difficult. Before deciding on a CNC plasma cutting table, it is better to keep the following in mind

- CNC cutting tables should have complete factory configured and tested turnkey systems

- CNC plasma cutting tables should be built upon fully welded steel frame and contain the tracker drive system

- It should have an integrated industrial micro computer.

- CNC cutting table should have all human interface devices and easy to use versatile software

- It should not be very complex but easy to use.

Select CNC Cutting Machine

2011-05-31T21:02:00.000-07:00

Selecting the CNC Cutting Machine
Usually, the selection of a particular CNC cutting machine mostly depends on the nature of the cutting job that needs to be performed. The operator of the machine should know which machine is more appropriate for certain tasks.

Based on the operations, the machines are divided into two types:

CNC Cutting Machine

- Straight Cutting: In some cases, the operator should choose the straight cutting machines, as they are the best ones which can perform different operations that require multiple straight cuts.

- Bevel Cutting: For other operations, the operator needs to choose the CNC cutting machine that is able to perform a perfect bevel cutting. This type of cutting allows various functions such as paring, shaving, reducing and trimming the material.

Both cutting types involve the same amount of tear and wear in any CNC cutting machine. This way, there is no significant reason other than the type of operation, to choose a specific machine instead of the other one. However, the manufacturer needs to make sure that the CNC cutting machine comes along with the adequate customer support.

This way, in case that the worker encounters various issues while using the machine, these can be solved as soon as possible. Additionally, the support offered by the CNC cutting machine’s producer should also include spare parts availability. The lack of availability actually means that the CNC cutting machine undergoes a retrofitting.

The Importance of Retrofitting for Producers
The retrofitting is very important for any operator of the CNC machine. And it is important mostly because it actually deprives the producer of important production time. The retrofitting actually reflects on the quantity of goods which are considerably diminished. Due to this issue, the producer is not able to produce the quantities he needs and this thing leads to important losses.

This is why the spare parts for any CNC cutting machine type should be always available. This way, the producer is able to ensure the continuity of its production and complete the orders on time. And for this reason, prior to investing in such a machine, you have to make sure that the manufacturer is able to ensure a constant support and service.