What is the influence of welding materials on welding?

The influence of welding materials on welding mainly includes the following aspects:

Alloying of weld metal: Alloy elements in welding materials will transition to weld metal, compensate for losses caused by evaporation, oxidation and other reasons during welding, eliminate welding defects, and improve the structure and mechanical properties of weld metal.

Fusion ratio and alloy transition coefficient: Fusion ratio refers to the ratio of filler metal and partially melted parent metal in weld metal, which will affect the composition of weld metal. The alloy transition coefficient refers to the ratio of the actual content of alloy elements in the weld to the original content, reflecting the transition efficiency of alloy elements.

Welding quality: The quality of welding materials directly affects the quality of welded joints. For example, too many impurities in welding materials may cause welding defects such as pores and cracks.

Weldability: The selection of welding materials will also affect weldability, that is, whether the metal is easy to weld. For example, welding materials with high carbon content are prone to welding cracks, so the weldability is poor.

In summary, welding materials have an important influence on the welding process and results. The correct selection and use of welding materials is the key to ensuring welding quality.