The mechanical properties, chemical composition of welding materials
Views: 1 Author: Site Editor Publish Time: 2016-11-07 Origin: Site
People believe that a lot of books to know welding material, then how many people know that mechanical energy and chemical composition of the welding material?
A. for low carbon steel, medium carbon steel and low alloy steel, can be used with the base strength grade corresponding electrode, the tensile strength equal to or slightly higher than the parent metal.When the force is complex, should choose level lower than the strength of parent metal electrode, has to ensure that the weld strength, and can have the satisfaction of plastic.
B. for alloy structural steel, usually require the same alloy components of weld metal and base metal or similar.
C. in the welding structure complex, high rigidity, joint stress, weld crack generating cases, can consider to choose level lower than the strength of parent metal electrode.
D. C.P, S in the parent metal element content on the high side, such as weld crack generating cases, should choose good low hydrogen type electrode crack resistance.
E. after the strength of the electrode to determine, for plastic, high impact and crack resistance, low temperature under the working conditions of weld should choose basic electrode.
F. when welding joint place more rust, scale, water and oil dirt, and failing to clean up, should choose to rust, oil, and small scale, water sensitivity and stomatal resistance strong acid electrode.
G. low carbon steel and low alloy steel, low alloy steel with different levels of intensity between dissimilar steel welding, such as general selection and low strength grade steel matching electrode.
That is about the welding material mechanical properties, chemical composition of the related introduction, hope can help to you.