According to the working principle of the welding machine, the butt welding process can be divided into two types: resistance butt welding and flash butt welding:
Resistance Butt Welding Resistance butt welding is to heat the end of the reinforced joint to a plastic state, cut off the power, and then heat to the plastic connection. This welding process is easy in the joint part of oxidation and slag, and requires the steel part to be smooth and smooth. At the same time, welding consumes a lot of power and requires welding power, so it is rarely used.
Flash butt welding Butt welding means that during the welding process, from the reinforced end of the molten metal particles, sparks (ie flashes) are displayed. At the same time as molten metal spraying, oxides and slag can also be discharged, so that the quality of welded joints can be widely used, especially suitable for butt joints of low-carbon steel and low-alloy steel.
