高强韧钢管热处理前后轴向与周向残余应力分布  

Distributions of residual stresses in axial and circumferential directions for high-strength and high-toughness steel pipes before and after heat treatment

作　　者：翟鹏远 李峰诚 侯晓峰 Zhai Pengyuan;Li Fengcheng;Hou Xiaofeng(China North Advanced Technology Gener Lization Institute,Beijing 100089,China;Inner Mongolia North Heavy Industry Group Corp.Ltd.,Baotou 014030,China)

机构地区：[1]中国兵器工业新技术推广研究所,北京100089 [2]内蒙古北方重工业集团有限公司,内蒙古自治区包头014030

出　　处：《锻压技术》2025年第3期95-101,共7页Forging & Stamping Technology

基　　金：国防基础科研计划(JCKY2022208A002)。

摘　　要：通过测量获得高强韧钢管热处理前后轴向与周向的残余应力分布情况,评估热处理工艺对钢管性能的影响。研究共选用3根同型号的40CrNi4Mo1V钢管作为研究对象,其中,热处理前2根,热处理后1根。测试采用盲孔法对钢管轴向和周向上共计47个数据点进行钻孔测量,结果显示,热处理后钢管的等效残余应力普遍降低。通过统计分析进一步计算了每个测量点的平均值和标准差,评估了热处理前后钢管在轴向与周向上的等效残余应力分布特征,发现了热处理后钢管轴向等效残余应力平均值和标准差均有所下降,揭示了热处理可以一定程度上降低并均匀化钢管中的残余应力,对钢管的加工制造具有重要意义。The axial and circumferential residual stress distributions of high-strength and high-toughness steel pipes before and after heat treatment were obtained by measurement to evaluate the influence of heat treatment processes on the performance of steel pipe.Then,for three 40CrNi4Mo1V steel pipes of the same type,including two pipes before heat treatment and one pipe after heat treatment.Furthermore,a total of forty-seven data points in the axial and circumferential directions of steel pipes were drilled and than measued by the blind hole method.The results show that the equivalent residual stress of steel pipe generally decreased after heat treatment.The mean value and standard deviation of each measurement point are further calculated by statistical analysis,and the distribution characteristics of equivalent residual stress in the axial and circumferential directions of steel pipes before heat treatment are evaluated.It is revealed that both the mean value and standard deviation of the axial equivalent residual stress of steel pipe decrease after heat treatment,indicating that the heat treatment can reduce and homogenize the residual stress in the steel pipes to a certain extent,which is of great significance to the processing and manufacturing of steel pipes.

关 键 词：钢管 热处理 残余应力 轴向 周向 统计分析 

分 类 号：TG115[金属学及工艺—物理冶金]