Welding machine products

With high technology, MIL offers welding machines, cutting machines and whole equipment sets. Products are environmentally friendly with characteristics of energy-saving and high efficiency, including invert MMA arc welding machines, TIG arc welding machines, CO2 gas-protecting welding machines, automatic submerged arc welding machines, air plasma cutting machines, two invert AC/DC square wave arc welding machines, CNC digital flame cutting machines and all kinds of complement machine clamps for welding and cutting.

Welding machines are usually classified as constant current (CC) or constant voltage (CV); a constant current machine varies its output voltage to maintain a steady current while a constant voltage machine will fluctuate its output current to maintain a set voltage. Shielded metal arc welding will use a constant current source and gas metal arc welding and flux-cored arc welding typically use constant voltage sources but constant current is also possible with a voltage sensing wire feeder.

The nature of the CV machine is required by gas metal arc welding and flux-cored arc welding because the welder is not able to control the arc length manually. If a welder attempted to use a CV machine to weld with shielded metal arc welding the small fluctuations in the arc distance would cause wide fluctuations in the machine's output. With a CC machine the welder can count on a fixed number of amps reaching the material to be welded regardless of the arc distance but too much distance will cause poor welding.