Basic knowledge of welding

29-05-2019

Basic knowledge of welding


Welding, also known as welding and picking, is a manufacturing process and technology for joining alloys or other thermoplastic materials such as plastics by means of heating, high temperature or high pressure. Welding achieves the purpose of joining through the following three ways:


1. Welding - Heating the workpiece to be jointed to form a local melting pool. After the pool is cooled and solidified, it can be joined. If necessary, it can be assisted by filler. It is suitable for welding various metals and alloys without pressure.


2. Pressure welding - The welding process must exert pressure on the welding parts, which belongs to the processing of various metal materials and some metal materials.


3. Brazing - using metal material with lower melting point than base metal as filler metal, wetting base metal with liquid filler metal, filling joint gap, and diffusing with base metal to realize link welding. It is suitable for welding of various materials and welding of different metals or different materials.


welding-wire


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