Selection of welding electrodes
Thread Content
For leaks in the equipment head flanges of 16MNDR, what type of welding rod should be used for repair welding? And if plate welding is required, what material should be chosen?
First, is the base material 16MnR an HIC steel? For root welding in TIG welding, H08MnHICG flux-cored wire can be used, along with the flux H08MnHIC/SJ613HIC. These welding materials are specifically designed for welding 16MnR(HIC) steel; they feature extremely low levels of impurities such as S and P, as well as excellent resistance to hydrogen-induced cracking and sulfide stress corrosion. Selection of welding wire for 16MnDR material: ER70S-6 can also meet the requirements
Welding electrodes J507, J507R, and J507RH that meet JB4747 standards should all be suitable
Specifically regarding the issue with the flange, is it due to poor welding, cracks, or a quality problem with the flange itself? Generally, the flanges on equipment are quite thick; if no measures are taken, welding can lead to stress and cracks.