The test piece which was made from metal material such as 16MnR, Q235 and 20g was processed using anti-welding-heating treatment. The stress and fatigue was tested for the processed piece. Through the data analysis, it was obtained that anti-welding-heating treatment is a kind of effective technology about adjusting the welding residual stress, which can decrease the welding residual tensile stress of the metal material. If the difference in temperature is big enough, a bidirectional compress residual stress layer will be formed on the processed metals surface, which can improve fatigue resistance ability of metal material.

It was introduced that the influence and mechanics of anti-welding procedure on corrosion resistance of the different materials such as Q235 steel,16MnR steel and 20g steel in the acidic and alkali solutions. This method is to carry on the heat treatment for each kind of material sample, and use the cooling medium to cool the welding joint rapidly, in order to obtain the negative temperature departure that is opposite to the welding temperature field，and relieve the residual stresses produced in the welding process. Q235 steel and 16MnR steel which are processed by 350℃ anti-welding procedure, compared with the unprocessed samples, the corrosion rate in the acidic solution reduces 66.1％and 67.9% respectively. The results show that the anti-welding procedure relieves effectively the welding line residual stresses and slows up the stress corrosion rate. This method can be applied to the welding structures which are required to prevent the stress corrosion.