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| 引用本文： | ???????????????????????.?????????????????????????[J].钢铁研究学报,2015,27(12):68-74. |
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| 作者姓名： | ??????????????????????? |
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| 作者单位： | 1. ???????????????????? ???? ??? 210019 ; 2. ?????????????????? ???? ??? 243002 |
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| 摘 要： |
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| 关 键 词： | ????? ?????? ???? ???????? ?????? |
Numerical simulation for on- line quenching and self tempering of large bar |
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| YANG Yi??LIU Fei ??CHEN Qi- wei??YANG Shu- bao.Numerical simulation for on- line quenching and self tempering of large bar[J].Journal of Iron and Steel Research,2015,27(12):68-74. |
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| Authors: | YANG Yi??LIU Fei ??CHEN Qi- wei??YANG Shu- bao |
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| Affiliation: | 1. Huatian Engineering and Technology Corporation, MCC?? Nanjing 210019, Jiangsu, China ; 2. School of Metallurgical Engineering, Anhui University of Technology, Ma??anshan 243002, Anhui, China |
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| Abstract: | On- line quenching and self tempering is the advanced technology in the production of large bars. Considering the latent heat of phase transformation and the changes of thermal physical properties of material with temperature, the temperature fields of online quenching and air cooling process after rolling of large diameter bars (more than 50mm in diameter) of 45 steel and 42CrMo with different specifications were simulated with the finite element software MSC. Marc. The critical cooling speeds of quenching were calculated to obtain the maximum depths of hardened layers of bars with different diameters and the related hardening time needed for forming maximum depth of hardened layer. The temperature fields of the bars after different quenching time were studied, meanwhile, the possibility of self- tempering was analyzed. |
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| Keywords: | large bar on-line quenching self-tempering hardened layer depth quenching time |
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