1. Gas welding is also called wind welding. PMA plasma brazing machine completely replaces the traditional brazing equipment, and it is a new generation of brazing equipment that does not need flammable gases such as oxygen, acetylene, liquefied gas, alcohol and gasoline. Using IGBT inverter control principle, the flame is very stable during welding, and the whole equipment is light and suitable for outdoor welding. The operation of welding machine is simple, and those who know welding machine slightly do not need special training. This product does not need flammable and explosive gases such as acetylene, and its safety performance is greatly improved. Only use electricity, and the advantages of using plasma brazing machine in some underdeveloped areas (no oxygen or acetylene, gasoline, etc. ) are very obvious. In the welding process, gas flux can be directly used instead of the traditional manual addition of borax to improve the wettability and fluidity of brazing, thus reducing the formation of pores. Improve the tensile strength of the weld, and the surface will not be oxidized and blackened during welding. There is no need for pickling, which greatly improves the welding efficiency.

2. At present, gas welding is usually used in construction, and the weld is cut and repaired by oxyacetylene flame. When in use, first connect the oxygen pressure reducer and acetylene pressure reducer with the oxygen and acetylene cylinders correctly, and then adjust their respective working pressures before cutting and welding. Gas cutting guns and gas welding guns have instructions for connecting oxygen and acetylene gas. When igniting, first open the oxygen valve, then open the acetylene valve to ignite immediately; When the engine is off, the opposite is true. When tempering, the acetylene valve should be closed immediately, and the ignition work can be continued after the welding torch is cooled.