用机械振动方法来代替退火,降低焊接件和铸件的残余应力,它不但具有投资少,设备简单,周期短,易于操作,效率高,大大节省能源等优点,在使用中业已证明效果可靠。我厂从一九七九年开始已在型架等工艺装备上全面采用,目前已越来越多地为人们所接受,使用范围也日益扩大。对边振边焊工艺我们在试验中也获得良好效果。现介绍如下: The mechanical vibration method instead of annealing to reduce the residual stress of the welding parts and castings, it not only has the advantages of less investment, simple equipment, short cycle, easy operation, high efficiency, significant energy savings, has proven reliable in use. I plant from 1979 has been in the framework of the full-scale technology and equipment, has now been more and more accepted by the people, the use of the growing range. On the side edge welding process we also get good results in the experiment. Now introduced as follows: