Welding Process
1. Fusion welding: A method of locally heating and melting a surface of a connected object to a liquid and then cooling it into a unit.
2. Pressure welding: The physical effects of friction, diffusion and pressure are used to overcome the unevenness of the two joint surfaces, and the oxide film and other contaminants are extruded. The atoms on the two connecting surfaces are brought close to each other to the lattice distance, thereby achieving the connection of the two objects under solid state conditions.
3. Brazing: A method of using a molten metal having a melting point lower than the melting point of the material of the joined member as a connecting medium to immerse the surface of the two objects, and cooling the crystal to form a bonding surface.
The electrode used in the welding process consists of two parts: the coating and the core.
The main role of the electrode coating
(1) Protection;
(2) metallurgical effect;
(3) Make the electrode have good process performance.
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