【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。更多还原

【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.更多还原