Brazing: below the melting point of the solder and the solder and the solder at the same time heated to the melting temperature of the brazing material, the use of liquid brazing material to fill the gap in the solid workpiece to make the metal connection of the welding method. Brazing to remove the base material on the contact surface of the oxide film and oil, in order to facilitate the role of the capillary tube in the brazing material melting, increase the wettability of the brazing material and capillary mobility. According to the different melting points of the brazing material, brazing is divided into hard brazing and soft brazing.
Manual tungsten argon arc welding electrode using cerium tungsten electrode. Electrode diameter should be selected according to the size of the welding current (when using the general specifications than the welding current required by a tungsten electrode).
Expanded information:
Precautions:
The length of the arc is related to the type of electrode coating and thickness of flux coating. But all should take as short arc as possible, especially some low hydrogen welding rod. Arc length may cause porosity. Short arc can avoid the atmosphere of O2, N2 and other harmful gases into the weld metal, the formation of oxides and other undesirable impurities and affect the quality of the weld.
The appropriate welding speed is generally also the diameter of the electrode, paint type, welding current, the heat capacity of the welded material, the structure of the beginning of the conditions of its corresponding changes can not be made standard provisions.
Baidu Encyclopedia - Copper Welding