the predeformation process to decrease welding deformation is simulated by fem and the method to determine predeformation value is given. the final deformation after welding is predicted.
the relationships among the sizing ability with sizing temperature, time and predeformation are studied by means of the bending tests with 2024 and ly12 aluminium alloy plates.
the results show that the predeformation raises the scc resistance and strength of the alloy.
表明预拉伸变形提高了合金的应力腐蚀抗力和强度。
the reduction of predeformation can also affect the mechanical properties of the steel sheet after the simulation test.
预变形时的变形量对模拟高温搪烧后钢板的力学性能也会产生影响。
to introduce structure and process design of horizontal adjustable predeformation apparatus according to production require of fnr series multilayer stands non rotation ropes.