In order to reduce the large residual stress generated during the solution treatment of hydrogen-resistant steel,this paper uses orthogonal experimental design and residual stress characterization method based on the contour meth-od to study the effect of deep cooling treatment parameters,such as deep cooling temperature,deep cooling holding time,number of hot and cold cycles and cooling rate,on the residual stress of hydrogen-resistant steel.The results show that the residual stress can be reduced to the greatest extent by deep cooling temperature of-130℃,deep cooling holding time of 10 hours,three hot and cold cycles,and cooling rate of-2.5℃/min.The residual stress in the core is reduced from 413MPa in solid solution to 93MPa in deep cooling.The sequence of effects of deep cooling parameters on the residual stress of hydrogen-resistant steel is:deep cooling temperature,deep cooling holding time,number of hot and cold cycles,and cooling rate.The results of this research will provide technical support for high-precision processing of hydrogen-resistant steel thin-walled components.
维普
万方数据
