Numerical simulation of quenching process of integral steel rolling wheel

doi:10.13251/j.issn.0254-6051.2020.10.042

Abstract

Abstract: Temperature field, stress field and microstructure change of an 840D wheel under different quenching processes were studied by using the DEFORM-HT software numerical simulation calculation, combined with the continuous cooling transition curve (CCT curve) of CL60 steel. The results show that the tread water quenching process is the optimal quenching project. It is concluded that the maximum equivalent stress of the wheel(the equivalent stress after unloading is the residual stress) after water quenching is 245 MPa, which is better than other schemes. The martensite transformation of the wheel tread during the quenching process can increase the wear resistance of the wheel. The hardness of the wheel rim surface is 33 HRC,which can meet the requirements of 27-34 HRC. According to the actual working conditions combined with the CCT curve of CL60 steel, the experimental scheme of water jet quenching is established. The microstructure of the specimen is observed and compared with the simulation results, which prove that the simulation results are reliable.

Key words: DEFORM-HT, CL60 steel, CCT curve, quenching, microstructure

CLC Number:

TG161

Sun Xiaoming, Yan Yan, Du Xiaozhong, Wang Wenbo. Numerical simulation of quenching process of integral steel rolling wheel[J]. Heat Treatment of Metals, 2020, 45(10): 218-224.

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