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Having checked that the MinarcMig Evo is prepared in the correct way for the welding task
ahead, and that you are wearing the necessary protective equipment, you are ready to
commence welding.
MIG/MAG welding can be performed down hand, vertically and overhead: either right to left
(Right handed operators) or left to right (left handed operators)
First, present the welding gun nozzle to a practice work piece. The gun nozzle should be
approximately 15 mm away from the surface of the work piece and weld joint. If welding a T
llet joint, the gun should be held at an angle of approximately 45 degrees, bisecting the 90
degree joint at the midway point. Starting at the right hand side of the joint (Right handed
operators only), lean the gun backwards slightly, so the gun nozzle is pointing forwards,
towards the centre of the work piece. This is called a 'pushing technique' and is suitable for
most applications.
Pull the welding gun trigger. The ller wire will move forward, and a short circuit will occur
and the arc will be established. Keeping the gun trigger depressed, the molten weld pool will
start to form. Begin to travel the gun forwards, in a controlled manner and travel speed. Not
too fast and not too slow. Providing you have correctly set your MinarcMig Evo, your welding
power should be correctly set for the material thickness and type, and the quality of your weld
deposit is now determined by your skill and technique.
The resulting weld deposit, width and shape, should be consistent in appearance and quality.
If you are welding too fast the weld bead may be too thin or even intermittent in appearance.
Try to slow your travel speed slightly and maintain an even approach to the joint. If you are
welding too slowly, you may nd the weld deposit is too heavy, the weld piece overheats and
possibly burns a hole through the plate. All that may be required to ensure a successful result
here is an increase in forward travel speed, but you may also need to reduce the power setting
slightly, to achieve the desired result.
As with all craft skills – practice will make perfect! For more info www.kemppi.com > Welding
ABC.
MinarcMig Evo 170, Evo 200
16
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