What is the effect of the solder of the welded pipe on the welding?
Copper pipe is an important raw material for refrigeration equipment, which is mainly used for making heat ex-changers and connecting pipes and fittings. Refrigeration and air-conditioning welded pipe fittings are mostly copper (purple) pipes. Common types of solder are copper-phosphorus solder, silver-copper solder, and copper-zinc solder. According to the characteristics of the pipe material, the correct solder should be selected and operated skillfully to ensure the quality of the welding. 1. Welding of similar materials (1) Brazing of copper and copper You can choose phosphor copper solder or phosphor copper solder with low silver content, such as 2% or 5% silver-based solder. This type of solder is relatively cheap and has a good solution. It uses caulking and wetting processes and does not require flux. (2) Welding of steel and iron Optional brass bar solder plus appropriate flux. When s...