Why is the crack after the titanium plate welding?
Titanium plate welding environment is not qualified, Fe ion content is too high, a direct lead to weld cracking.
Solvent cleaning is not enough to lead to excessive impurities have a small liquefaction crack (when a PT does not check out), under the influence of a small amount of H delay the root of the delay occurred in the crack
So the need to standardize the welding plate, carbon steel to draw 35 degrees plus or minus 5 degrees (ie, about 60-70 degrees on the interface), welding carbon steel, clear roots, welding titanium plate, such as surface requirements, To be polished
