基于分段热边界的杆件连续淬火过程的数值模拟

doi:10.13251/j.issn.0254-6051.2022.10.045

金属热处理 ›› 2022, Vol. 47 ›› Issue (10): 263-269.DOI: 10.13251/j.issn.0254-6051.2022.10.045

基于分段热边界的杆件连续淬火过程的数值模拟

何浩平, 王发展, 荆烁文, 许正昊, 黄克鹏

西安建筑科技大学机电工程学院, 陕西西安 710055

收稿日期:2022-05-16 修回日期:2022-08-12 出版日期:2022-10-25 发布日期:2022-12-15
通讯作者: 王发展,教授,博士,E-mail:wangfz10_1@163.com
作者简介:何浩平(1995—),男,硕士研究生,主要研究方向为先进材料制备工艺,E-mail:505643775@qq.com。
基金资助:
功能材料加工国家地方联合工程研究中心项目(Z20200062)

Simulation on continuous quenching process of rod based on segmented thermal boundary

He Haoping, Wang Fazhan, Jing Shuowen, Xu Zhenghao, Huang Kepeng

School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an Shaanxi 710055, China

Received:2022-05-16 Revised:2022-08-12 Online:2022-10-25 Published:2022-12-15

摘要/Abstract

摘要： 提出了一种针对连续淬火过程数值模拟的分段热边界方法,并得出了模型分段判据。以30CrNi3MoV钢多孔杆件为例,采用MARC软件对其进行了水淬模拟,得到了温度场、应力场、组织分布比例与硬度场。模拟结果表明,分段热边界法较整体热边界淬火模拟更符合实际工况,且工件内部温度随入水深度的增加而降低,工件应力由工件前端向后端衰减;淬火后的表面硬度为51.9~53.7 HRC,心部硬度为36.8 HRC,其与工件实际淬火后的硬度差最大不超过10%;孔偏向中心的畸变量为0.18~0.20 mm,工件长度的畸变量为1.85 mm,孔和工件的畸变量相差在5%以内。该结果验证了分段热边界方法的准确性。

关键词: 分段热边界, 30CrNi3MoV钢, MARC, 组织硬度, 位移量

Abstract: A segmented thermal boundary method for numerical simulation of continuous quenching process is proposed, and the model segmentation criterion is obtained. Taking 30CrNi3MoV steel porous rod as an example, the water quenching simulation was carried out by using MARC software, and the temperature field, stress field, microstructure distribution ratio and hardness field were obtained. The simulation results show that the segmented thermal boundary method is more in line with the actual working conditions than the overall thermal boundary quenching simulation, and the internal temperature of the workpiece decreases with the increase of the water depth, and the stress of the workpiece decreases from the front end to the back end of the workpiece. The surface hardness after quenching is 51.9-53.7 HRC and the core hardness is 36.8 HRC, which is not more than 10% different from the hardness of the workpiece after actual quenching. The distortion of the hole to the center is 0.18-0.20 mm, and the distortion of the workpiece length is 1.85 mm. which is within 5% difference from the distortion of the hole and the workpiece. All that verifies the accuracy of the segmented thermal boundary method.

Key words: segmented thermal boundary, 30CrNi3MoV steel, MARC, tissue hardness, displacement

中图分类号:

何浩平, 王发展, 荆烁文, 许正昊, 黄克鹏. 基于分段热边界的杆件连续淬火过程的数值模拟[J]. 金属热处理, 2022, 47(10): 263-269.

He Haoping, Wang Fazhan, Jing Shuowen, Xu Zhenghao, Huang Kepeng. Simulation on continuous quenching process of rod based on segmented thermal boundary[J]. Heat Treatment of Metals, 2022, 47(10): 263-269.

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基于分段热边界的杆件连续淬火过程的数值模拟

Simulation on continuous quenching process of rod based on segmented thermal boundary

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