Stainless steel beams in the process of welding, weld metal heat bilges cold shrink received metal around at home and not free expansion, lead to stainless steel beams in the presence of residual stress and residual deformation after welding. The existence of residual deformation not only affects the dimensional accuracy of the structure and appearance, and may reduce the beams bearing capacity and mechanical properties of stainless steel. So adjustment and control welding deformation is very important.
Welding thermal deformation is certainly there, if it is single side welding, the impact will be greater. So how should face the welding stress and welding deformation control? HuiTai, stainless steel encyclopedia compiled for you the following methods:
1, adopt the appropriate welding procedure, such as the subsection welding, the welding stratification;
2, as far as possible use semmetry welding, make its deformation instead and offset;
3, make the structure has a before welding and welding deformation instead of prestressing;
4, for a small component welding after preheating, welding tempering money, and then slowly cooling, in order to eliminate the welding stress;
5, can also be at the time of welding, point two head first, fixed welding, welding on the whole after removed, will also be helpful;
6, is the distortion, can use percussion, mechanical vibration, decrease welding deformation.