The new principal inside welding machines is based on metal-arc
welding, whereas the older welding machines used electromagnetic
winding to increase the current in welding rods.
The new principal inside welding machines is based on metal-arc
welding, whereas the older welding machines used electromagnetic
winding to increase the current in welding rods.
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I am not sure your question is clear enough but here I go...
Stick Arc Welding (AC or DC), MIG (Metal Inert Gas) and TIG
(Tunsten Inter Gas). All three of these are the basic metal welding
machines.
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Mainly In spot welding & resistance welding two type welding
machines are used :- 1. Air Cooled & 2. water Cooled.
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+ and -respectively.
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Who makes the best welding machines is quite subjective. Some of
the best machines are said to be made by Lincoln Electric while
others prefer Miller Electric machines.