1. Thoroughly remove the grease at the missing joint before brazing.
2. When brazing, add flux according to the instructions provided by the flux manufacturer.
3. The joints are properly connected and the parts are fixed.
4. The average recommended temperature during brazing, and make the welding gun move from time to time according to the "S" shape.
5. Cool the connection place.
6. Add copper solder to the parts to be soldered. Do not use the welding gun to heat the brazing material.
7. After brazing, clean the contacts thoroughly with a brush and warm water to remove residual flux.