Koneliike Jomatig Oy

Flexible Grinding Wheels

2010-02-03T10:03:00.000-08:00

The FLEXCUT grinding wheel is a flexible wheel with Diamond-Cut surface pattern.

They are specially formulated for exceptional control on flat or contoured surfaced.

FLEXCUT combines grinding and sanding into one cost efficient operation. Contoured shape and flexibility prevent gouging of the material, making FLEXCUT the ultimate weld grinding and finishing wheel for every kind of metal.

Professional plasma cutter

2009-12-26T23:53:00.000-08:00

INE PL90 power sources allow quality cutting on thin and thick plates of mild steel, stainless steel, aluminium or aluminium alloys. Cutting parameters are set by digital control board, which assures process quality and reproducibility. Pilot arc is started by high frequency. Automatic restart allows the continuous cutting of punched plates and grids.

TECHNICAL DETAILS

Input (3Ph 50-60Hz): 400 V~
Main voltage slow blow: 25 A
Duty cycle at 40%: 90 A
Duty cycle at 60%: 80 A
Duty cycle at 100%: 65 A
Current range: 25-90 A
No-load voltage: 260 V
Protection class : 22 IP
Weight: 28 Kg
Dimension (WxDxH): 27x50x31 cm
Max thickness on mild steel: 40 mm
Max thickness on stainless steel: 30 mm

Bestis welding positioners.

2009-12-15T23:48:00.000-08:00

New product: Bestis welding positioners

Kemppi Minarc 110

2009-12-13T08:21:00.000-08:00

Chance to get Kemppi's MMA welding machine in low price!!!!

TMAX Torch

2009-12-09T08:16:00.000-08:00

TMAX is the living demonstration that there is still the possibility to make innovation on MIG/MAG products:

More information about torch soon..

MasterTIG MLS 2300 ACDC MMA Fe P48S 2,5mm 110 A

2009-11-17T21:12:00.000-08:00

In slow motion, you can see how molten metal transfers to the weld pool in MMA welding.

Source: Kemppi welding

How to kill a fly by accident, in slow motion.

2009-11-12T04:05:00.000-08:00

Welding arc could be deadly:

MicroTack welding 190 A 60 ms Ss 1,0 mm

2009-11-12T04:04:00.000-08:00

High energy density in TIG spot welding makes possible low heat input. In slow motion can be seen how arc energy is focused.

MicroTack welding 300 A 200 ms Ss 3,0 mm

2009-11-12T04:03:00.000-08:00

High energy density in TIG spot welding makes possible low heat input. In slow motion can be seen how arc energy is focused.

Kemppi WiseThin

2009-11-12T04:01:00.000-08:00

WiseThin is a tailored short arc process for thin sheet metal welding. In slow motion you can see two arc phases; the short circuit phase and the open arc phase. During the short circuit phase, metal transition occurs from the filler wire to the weld pool. In the open arc phase the filler wire is heated and droplet formation begins.

Kemppi FastMig Pulse 350/450

2009-10-24T03:50:00.000-07:00

Its your welding mission

FastMig Pulse puts you in control. We dont just mean in welding terms, although FastMig Pulse is particularly impressive here. FastMig Pulse sets new standards for customer choice. The software architecture allows standard or tailored packages to suit your specific welding environment, so the commercial benefits are yours. Whatever your welding mission, FastMig Pulse will deliver the technical and commercial solution thats right for you.

Specification choice

Build the machine you need. Air- or water-cooled packages combine well with innovative distance wire feeding and remote control solutions.
Kemppis Wise & Match software products offer
additional choice and solutions that match welding business in the real world, so you can be sure to cover your welding requirements now and far into the future.

Refine and control

Welding applications vary, so the equipment must adapt. FastMig Pulse features our Arc Wizard interface, providing a clear and logical LCD menu display. The Arc Wizard menu allows the operator to refine, adapt, and manage the arc process and system functions.
Simple and precise.

Source: Kemppi

Kemppi Wise

2009-10-24T03:46:00.000-07:00

Kemppi SuperSnake GT02S

2009-10-24T03:35:00.000-07:00

New video from Kemppi:

Kemppi SuperSnake through the wall

2009-09-16T07:42:00.001-07:00

Kemppi has renewed its company image

2009-09-15T22:50:00.000-07:00

Kemppi Oy celebrates its 60th anniversary and with that has renewed its company image.

Kemppi's new FastMig Pulse

2009-09-04T22:44:00.000-07:00

In brief

Suitability for basic, synergic, pulsed, and double-pulsed MIG/MAG welding
Quality weld performance
A wide range of solution options
Language choice selection
Lightweight three-core control cable
Administrator PIN code lock

Applications:

Shipyard and offshore applications
Metal fabrication workshops
The chemical and process industry
Automotive manufacture
Production welding

Arc Wizard:

Select, manage and refine your welding process with Arc Wizard P65 interface. Includes menu language selection.

ARM7 FPGA:

ARM and FPGA processing takes welding performance to a new level and allows life time welding software upgrades, should your needs change.

DataGun:

Ensure a simple and flexible approach to field software updates with DataGun. Add new welding software the easy way

Wise and Match:

Wise and Match products provide optional welding software solutions for enhanced performance and productivity.

SuperSnake:

For distance wire feeding

Here is a link to video:

http://www.kemppi.com/fmp_flash/index.html

Post-Processing of weld seams

2009-08-29T23:11:00.000-07:00

There is several reasons for post-processing of weld seams. Work piece can set a mechanical, hygienic, or appearance requirements for the weld seams, so the post-treatment is necessary.

With post-processing you can improve the corrosion resistance of the weld seam by removing impurities from the surface caused by welding, oxide, and surface below prone to corrosion.

So what kind of abbrasives should be used? Use high quality abrasives because they are more durable and cost-effective. High quality abrasives delivers real productivity benefits across your

operation without the premature dulling associated with traditional abrasives.

Polarion Abyss Video

2009-08-26T04:55:00.000-07:00

Polarion Abyss Video by: Vesa Mänty

SCHWEISSEN & SCHNEIDEN

2009-08-24T22:28:00.000-07:00

SCHWEISSEN & SCHNEIDEN is the most important event in the world of welding. The world market and global know-how, the decision-makers from companies and the top people in science only come together at this leading fair. More information at www.schweissenuschneiden.de

Kemppi Arc System

2009-08-24T22:25:00.000-07:00

Kemppi Arc System is powerful solution for collecting and analysing welding information provides reliable facts about production. More information
available at www.kemppi.com

Kemppi MinarcMig Adaptive 150

2009-08-13T09:51:00.000-07:00

Käytännön maamies-magazine has compared 6, less than 1000€ MIG/MAG welders and Kemppi MinarcMig Adaptive 150 came up as the winner. Here is the link.

Welding Tips: Checking the equipment before starting the welding

2009-08-11T00:20:00.000-07:00

Before starting a new welding job, the operating condition of the welding equipment should be inspected. The connections of the power cable, gas tube, grounding cable and welding gun must be checked. It must also be ensured that one is using the right shielding gas type and that the gas output works. The type and diameter of the filler material wire must be checked. Additionally, the appropriate fixing of the wire reel in the wire feeder must be ensured.

After this one must review the feed rolls of the wire feeder engine and make sure that the wire guides and feed rolls are suitable for the filler material and wire diameter used.

The welding gun must be detached from the wire feeder, making sure that the gun’s liner is of correct size and type are correct. The gas nozzle must be detached from the gun and any splashes must be cleaned from it. The condition and size of the contact tip must be checked. Additionally, the gas disperser and contact tip holder must be cleaned.

One can check the shielding gas flow with a rotameter at the end of the welding gun. If the wire is already in the gun, the pressure adjustment screw of the wire feeder engine needs to be detached to prevent the wire from moving, after which one should press the gun trigger and measure the gas flow. The easiest way for checking the flow of the shielding gas is the GAS TEST function, if one is available in the wire feeder. This function only activates the gas flow to the welding gun but does not activate wire feeding.

Welding angle and torch movement

When welding with solid wires or metal-cored wires, the gun is usually moved in pushing angle, with the exception of downward welding and welding of particularly thin sheet metals. In symmetric fillet welding, aim the welding gun has a 45-degree angle to the corner of the fillet and perpendicular to the groove in butt joints.

When welding with flux-cored wires, move the welding gun in pulling angle to prevent the slag generated by the wire from mixing with the molten weld. The arc pressure will keep the slag behind the molten weld. Certain directional welds, such as upward welding, are an exception to this. In this case the welding gun is moved with the handle behind the direction of movement, and earth’s gravity ensures that the slag will not rise above the molten weld.

Welding torch speed

The correct speed of the welding torch is an important factor for successful welding. The speed of motion affects the shape, penetration, heat input and effective throat thickness of the weld. The effective throat thickness refers to the shortest distance from the base of the weld to the surface of the weld.

If the speed of motion is too slow, the molten weld may roll in front of the arc and make the molten weld pool difficult to manage. An excessively high speed, on the other hand, may result in too small penetration and effective throat thickness.

The recommended speed may be provided in the welding instructions. It is, however, difficult to estimate the speed during welding. One way to determine the speed is to weld approximately 10 cm and time it with a clock. This allows for determining the speed as centimetres per minute.

Creep start

When using high wire feed speeds, it may be difficult to start the welding. A so-called creep start feature has been designed to make the beginning of welding easier.

The creep start feature starts feeding the wire at a low speed and does not attain the preset value until the wire touches the work piece and the arc ignites. The creep start adjustment is done in the welding machine’s control panel, if needed.

Hot start and soft start

When welding materials with good thermal conductivity, such as aluminium, it is easy to generate faults in the weld in the beginning. Using the so-called hot-start feature can decrease these. When using the hot-start feature, the welding power momentarily increases at the beginning of the welding to a level above the preset welding power. The power and duration of a hot start can usually be adjusted in the machine’s control panel.

When doing butt welding of sheet metal, the so-called soft-start feature may be useful, as it helps keep the edges of the sheets intact. A soft start is the opposite of hot start. The welding power is momentarily lower than the preset welding power during the start-up of the welding. The power and duration of a soft start can also usually be adjusted.

Adjusting welding parameters

The wire feed speed and the welding current are connected to each other. When increasing or decreasing the wire feed speed, the welding current follows. The arc voltage must be in correct relation to the wire feed speed and the welding current to produce stable welding. Sometimes it may, however, be very difficult to decide which value to change and in which direction to attain a good welding result.

The arc voltage is too low in relation to the wire feed speed, if

the sound of the arc is loud
there is a lot of spatters
the weld is more narrow and the cap is higher

The arc voltage is too high in relation to the wire feed speed, if

the sound of the arc is soft
the arc is long
the weld is wider and lower
the drop size of the filler material is large
the risk of undercuts is increased

There are a number of tables and guides that will assist in producing good welding results. There are also welding machines that automatically determine the correct arc voltage for the wire speed and welding current. Even in those machines, one may need to make adjustments to the arc voltage, as there may be differences between the filler material wires of different manufacturers.

With power sources equipped with stepped voltage adjustment it may not be possible to adjust the voltage to the exact correct figure in relation to the wire speed. In such cases, one can do the fine-tuning by increasing or decreasing the speed of the wire feed.

Common tips for enhancing welding work

There are simple ways for enhancing the welding work. With manually done work stages planned in an appropriate way and designed ergonomically, individual production may experience higher productivity increases than mechanisation would attain.

Pay attention to the working position. The most efficient position to do welding is downhand. In downhand welding, the work piece is placed on a level so that welding can be done in a natural position. Devices intended for turning the work piece should be utilised so that the work piece position allows for an ergonomic welding position.

Choosing the right welding process also plays an important role in work productivity. Any productivity increase attained by changing the welding process should be carefully investigated, even if changing the process could require additional investments.

Correct choice of welding parameters affects the efficiency of the welding work and also extra labour expenses. For example, the time spent removing spatters decreases the productivity of welding work. One can reduce the generation of splashes with pulse welding, for example.

Text source: Kemppi

MIG/MAG welding: Principles and Applications

2009-08-10T05:41:00.000-07:00

Welding: Principles and Applications is a good book about welding that we recommend.

MIG/MAG welding: General

2009-08-10T05:31:00.000-07:00

In MIG/MAG welding, an arc is created with the power supply through the welding gun between the welding wire being fed and the work piece. The arc fuses the material being welded and the welding wire, thus creating the weld. The wire feeder continuously feeds welding wire through the welding gun throughout the welding process. The welding gun also provides shielding gas to the weld.

The MIG and MAG welding methods differ from each other in that MIG (metal inert gas) welding uses an inert shielding gas, which does not participate in the welding process, while MAG (metal active gas) welding employs an active shielding gas that participates in the welding process.

Usually the shielding gas contains active carbon dioxide or oxygen, and therefore MAG welding is by far more common than MIG welding. In fact, the term MIG welding is often accidentally used in connection with MAG welding.

Text source: Kemppi

Why do we need different welding methods?

2009-08-09T02:56:00.000-07:00

Welding methods can be classified by the method used in producing the welding heat and the way the filler material is fed into the weld. The welding method used is selected based on the materials to be welded and the material thickness, the required production efficiency and the desired visual quality of the weld.

The most commonly used welding methods are MIG/MAG welding, TIG welding and manual metal arc welding. The oldest, most known and still fairly common process is manual metal arc welding, which is commonly used in installation workplaces and outdoor sites that demand good reachability.

The slower TIG welding method allows for producing extremely fine welding results, and therefore it is used in welds that will be seen or that require particular accuracy.

MIG/MAG welding is a versatile welding method, in which the filler material need not be separately fed into the molten weld. Instead, the wire runs through the welding gun surrounded by the shielding gas straight into the molten weld.

There are also other welding methods suitable for special needs, such as laser, plasma, spot, submerged arc, ultrasound and friction welding.

Text source: Kemppi