| 20CrMoH钢的真空低压渗碳工艺模拟及优化 |
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| 引用本文： | 王硕彬,丛培武,陈旭阳,范雷,王同.20CrMoH钢的真空低压渗碳工艺模拟及优化[J].金属热处理,2022,47(5):189-193. |
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| 作者姓名： | 王硕彬 丛培武 陈旭阳 范雷 王同 |
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| 作者单位： | 北京机电研究所有限公司, 北京 100083 |
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| 基金项目： | 国家重点研发计划(2018YFB2001904)； |
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| 摘 要： | 利用真空低压渗碳软件对20CrMoH钢的渗碳过程进行模拟,并根据模拟输出在WZSTQ真空渗碳炉上进行了试验。在800 Pa压力和960 ℃温度下渗碳,保压25 s,对比渗碳有效硬化层深度优化工艺。结果表明,最佳渗碳时间为120 min。优化工艺后,试验测得有效硬化层深度与软件预测的深度偏差在+0.23 mm以内,满足设计要求。软件预测的有效硬化层深度更接近齿轮产品的实测深度,最小偏差为+0.10 mm。通过930 ℃下渗碳试验,对比表面碳含量,证明了软件预测表面碳含量为0.75%时,与实测值基本一致,最大偏差为-0.02%。
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| 关 键 词： | 真空低压渗碳软件 20CrMoH钢 有效硬化层深度 表面碳含量 |
| 收稿时间： | 2021-12-12 |
Simulation and optimization of low-pressure carburizing process for 20CrMoH steel |
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| Wang Shuobin,Cong Peiwu,Chen Xuyang,Fan Lei,Wang Tong.Simulation and optimization of low-pressure carburizing process for 20CrMoH steel[J].Heat Treatment of Metals,2022,47(5):189-193. |
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| Authors: | Wang Shuobin Cong Peiwu Chen Xuyang Fan Lei Wang Tong |
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| Affiliation: | Beijing Research Institute of Mechanical and Electrical Technology Ltd., Beijing 100083, China |
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| Abstract: | Carburizing process of 20CrMoH steel was simulated by low pressure carburizing software, and the test was carried out on WZSTQ vacuum carburizing furnace according to the simulated output. The temperature was kept at 960 ℃, and the pressure was maintained under the carburizing pressure of 800 Pa for 25 s. The process was optimized by comparing the depth of effective carburizing hardened layer. The results show that the optimum carburizing time is 120 min. After process optimization, the deviation between the depth of effective hardened layer measured by the test and predicted by the software is within +0.23 mm, which meets the design requirements. The effective hardened layer depth predicted by the software is closer to the measured depth of the gear product, with a minimum deviation of +0.10 mm. Through the carburizing test at 930 ℃ and comparing the surface carbon content, it is proved that when the surface carbon content is 0.75% predicted by the software, it is basically consistent with the actual measured value, and the maximum deviation is -0.02%. |
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| Keywords: | vacuum low-pressure carburizing software 20CrMoH steel effective hardened layer depth surface carbon content |
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