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1, welding method
According to the different heating and pressure conditions during welding, it is usually divided into three types: fusion welding, pressure welding and brazing.
2. Electric welding
It is a welding operation where covered electrode is used to melt metal parts at high temperature and need arc connection.
3, the working principle of welding is
Through the commonly used voltage of 220V or 380V, the voltage is reduced and the current is enhanced by the transformer in the electric welding machine. The electric energy generates huge arc heat to melt covered electrode and steel, while covered electrode melting makes the fusion between steel higher.
4. Advantages of arc welding
It is the most widely used welding method, including manual arc welding, submerged arc welding, tungsten gas shielded welding, plasma arc welding, metal gas shielded welding and so on. Because arc welding uses power supply, the high-temperature arc generated by it is easy to cause fire and explosion, which is more dangerous.