亚共搌频率消除应力法发展于1970年,现已证实,其对消除热残余应力,效果甚佳。同时,能消除或显著减小热轧件、锻件、铸件在机械加工时的变形,而不改变其机械性能。该工艺亦能消除焊接残余应力,所用频率的振幅甚低,能制约焊接,防止脆裂,消除应 The frequency of sub-common 消 frequency stress-relief method developed in 1970, it has been confirmed that its elimination of thermal residual stress, the effect is very good. At the same time, to eliminate or significantly reduce the hot-rolled pieces, forgings, casting deformation in the machining, without changing its mechanical properties. The process can also eliminate welding residual stress, the amplitude of the frequency used is very low, can restrict the welding, to prevent brittle fracture, eliminate