42CrMo钢车轮锻件在淬火过程中的残余应力研究*

李永奎, 陈俊丹, 陆善平

RESIDUAL STRESS IN THE WHEEL OF 42CrMo STEEL DURING QUENCHING

LI Yongkui, CHEN Jundan, LU Shanping

表2 42CrMo钢的热物性参数

Temperature ℃ Elastic modulus 105 MPa Poisson's ratio Specific heat Jkg-1℃-1 Thermal expansion 10-6 ℃-1 Thermal conductivity Wm-1℃-1 20 2.08 0.29 - - - 100 2.05 0.29 546 11.9 35.1 200 1.98 0.29 563 12.5 35.1 300 1.91 0.30 580 12.9 35.1 400 1.85 0.30 631 12.9 35.2 500 1.78 0.30 720 13.3 34.9 600 1.68 0.31 730 13.6 32.0 700 1.53 0.31 795 13.9 27.9 800 1.32 0.32 539 10.6 21.1 900 1.11 0.34 588 12.0 24.2 1000 1.04 0.34 591 13.0 24.5