Disadvantages of welding machines

Welding machine in the use of the process of welding machine around will produce a certain magnetic field, arc burning will produce radiation to the surrounding, arc light, such as infrared, ultraviolet, as well as metal steam and soot and other harmful substances, so the operation must do adequate protection measures. Welding is not suitable for the welding of high carbon steel, because of the welding weld metal crystallization and segregation and oxidation process, for low-carbon steel welding performance is poor, easy to crack after welding, resulting in thermal cracks and cold cracks. Low carbon steel has good welding performance, but the process should also be properly operated, rust removal is more cumbersome, and sometimes the weld will appear slag crack hole bite edge and other defects, but proper operation will reduce the production of defects.