Welding Procedure Specification
A welding procedure specification is a detailed written description of a welding process that specifies all relevant parameters to ensure the required component quality.
Physical-Chemical Mechanism of Action
A welding procedure includes specific process parameters such as temperature, voltage, and time. These parameters affect the chemical reactions and physical phenomena during welding, such as joining metal particles and cooling of the weld seam.
Metallurgical Relevance & Risks in Welding
Incorrect application of these parameters can lead to various problems. Too high temperature or voltage can cause fusion of metal particles and porosity, which impairs the strength of the weld. Too short or too long cooling time can alter the microstructure and lead to crack-sensitive or too soft steel.
Workshop Practice & Instructions
To ensure successful welding, the parameters prescribed in the procedure must be followed exactly. This includes setting the welding machine to the correct temperature and voltage, as well as controlling the cooling time. It is important that all workshop staff carefully follow the instructions and regularly check that the parameters are correctly maintained.