稳定化处理消除离心压缩机主轴残余应力的有效性
Validity of Relief of Residual Stress in Centrifugal Compressor Spindle by Stabilizing
陈炜 1牛丹 1马国军 2刘业超1
作者信息
- 1. 沈阳透平机械股份有限公司,辽宁沈阳 110869
- 2. 大连理工大学,辽宁 大连 116024
- 折叠
摘要
对结构类似于离心压缩机主轴的40NiCrMo7钢试棒进行了调质处理和560 ℃分别保温15、25和40 h的稳定化处理.通过钻孔试验检测了调质处理态和稳定化处理态试棒的残余应力.结果表明:调质处理态试棒的残余应力较大,为700～850 MPa;稳定化处理能减小试棒的残余应力,随着稳定化处理时间的延长,残余应力降低;稳定化处理15 h的试棒残余应力消除了 50％～80％,稳定化处理25 h的试棒残余应力值为-80～-200 MPa.
Abstract
40NiCrMo7steel test bars similar to centrifugal compressor spindle in configuration were quenched and tempered,as well as were stabilized at 560 ℃ for 15,25 and 40 h,respectively.The residual stresses in the test bars in quenched-and-tempered and stabilized conditions were surveyed via drilling test.The results indicated that(a)the test bar in quenched-and-tempered condition exhibited residual stress as larger as 700 to 850 MPa;(b)the stabilizing was enabled to decrease residual stress in the test bar,and as duration of the stabilizing prolongated,the residual stress reduced;and(c)50％to 80％of residual stress in the test bar stabilized for 15 h was able to be relieved,and the residual stress magnitudes in the test bar stabilized for 25 h were-80 to-200 MPa.
关键词
40NiCrMo7钢/钻孔试验/残余应力/稳定化处理Key words
40NiCrMo7 steel/drilling test/residual stress/stabilizing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据