Simulation and application of water-air alternating control quenching for heavy-duty shaft of 42CrMo steel

doi:10.13251/j.issn.0254-6051.2025.05.048

Abstract

Abstract: In response to the problem of slow cooling of the core of large-sized 42CrMo steel shafts, which made it difficult to achieve the required mechanical properties even after water quenching, the composition was optimized based on 42CrMo steel, and the tested alloy structural steel was customized. The quenching temperature field and stress field of the actual product were simulated by using finite element software, and the water-air alternating control quenching of the tested alloy structural steel shaft with a diameter of ø610 mm and a length of 8800 mm was successfully realized. The results show that after comparing the surface temperature measured with the simulated temperature, it is verified that the two are basically consistent. The tensile strength, yield strength and impact property of the parts at a depth of 90 mm from the surface still meet the technical requirements, and the overall quenching effect is guaranteed.

Key words: water-air alternating control quenching, 42CrMo steel, heavy shaft parts, simulation, mechanical properties

CLC Number:

TG156.34

Guan Minchao, Chen Yongming, Xie Xuexing, Li Zhenhua, Cao Liang, Li Jie, Zuo Xunwei. Simulation and application of water-air alternating control quenching for heavy-duty shaft of 42CrMo steel[J]. Heat Treatment of Metals, 2025, 50(5): 309-313.

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