There are many types of welding machines, including single-point single-function, single-point dual-function, single-point multi-function (this type of welding machine also has only one welding head, after changing the form of the positioning plate, it can be used for any angle between 90° and 180°. angle welding). There are also two-point, three-point, four-point and even six-point welding machines and four-point welding machines. Different types of welding machines have different welding functions and work efficiencies.
Welding ensures the continuity of the metal. On the one hand, the two metals are connected to each other by bolted connection or physical attachment, showing a strong metal whole, but this connection is discontinuous, and sometimes if there is an oxide insulating film on the surface of the metal, they even Right or wrong physical contact. Another disadvantage of mechanical connection compared with welding is that the contact surface continues to oxidize, resulting in an increase in resistance. Also, chatter and other mechanical shocks can loosen the joint. Welding eliminates these problems, the welding parts do not move relative to each other, the contact surface does not oxidize, and the continuous conduction method is maintained. Welding is a fusion process between two metals. In the molten state, the solder will dissolve some of the metal in contact with it, and the surface of the welded metal often has a thin oxide film that cannot be dissolved by the solder. The flux is used to remove it. this oxide film.
Welding needs to be carried out at high temperature, and the general magnet wire cannot meet the needs. The surface of the enameled wire is coated with insulating paint, which can withstand high temperature and is often used in electric welding machines.
