深冷处理对镐型截齿硬度、耐磨性和冲击性能的影响及其优化

doi:10.13251/j.issn.0254-6051.2022.12.014

金属热处理 ›› 2022, Vol. 47 ›› Issue (12): 84-89.DOI: 10.13251/j.issn.0254-6051.2022.12.014

深冷处理对镐型截齿硬度、耐磨性和冲击性能的影响及其优化

张海东¹, 闫献国², 董良³, 张洁⁴, 赵学文⁵

1.晋中学院机械系, 山西晋中 030619;
2.太原科技大学机械工程学院, 山西太原 030024;
3.中国煤炭科工集团太原研究院有限公司, 山西太原 030006;
4.东杰智能科技集团股份有限公司, 山西太原 030008;
5.山西利普利拓煤机部件制造有限公司, 山西晋城 048002

收稿日期:2022-07-27 修回日期:2022-10-30 出版日期:2022-12-25 发布日期:2023-01-05
作者简介:张海东(1986—),男,博士,主要研究方向为先进制造技术,E-mail:tronmek@outlook.com
基金资助:
国家自然科学基金(51675363)

Effect of cryogenic treatment on hardness, wear resistance and impact property of conical pick and its optimization

Zhang Haidong¹, Yan Xianguo², Dong Liang³, Zhang Jie⁴, Zhao Xuewen⁵

1. Department of Mechanics, Jinzhong University, Jinzhong Shanxi 030619, China;
2. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan Shanxi 030024, China;
3. Taiyuan Research Institute Co., Ltd., China Coal Technology Engineering Group, Taiyuan Shanxi 030006, China;
4. OMH Science Group Co., Ltd., Taiyuan Shanxi 030008, China;
5. Shanxi Lipulituo Coal Machine Parts Manufacturing Co., Ltd., Jincheng Shanxi 048002, China

Received:2022-07-27 Revised:2022-10-30 Online:2022-12-25 Published:2023-01-05

摘要/Abstract

摘要： 在镐型截齿传统钎焊—热处理工艺中引入深冷处理技术,形成钎焊—热处理—深冷处理新工艺,并以深冷温度和深冷时间为深冷处理主要工艺参数,使用全因子方法设计深冷处理试验方案,测试镐型截齿齿头部位和齿体部位硬度,测试镐型截齿齿体冲击性能,对镐型截齿整体进行截割岩料试验测试耐磨性,以研究深冷处理对镐型截齿硬度、耐磨性和冲击性能的影响规律,并寻求最优深冷处理工艺。结果表明,深冷处理对镐型截齿硬度影响不显著,对冲击性能有轻微不利影响,但显著提高了镐型截齿的耐磨性。镐型截齿综合性能最优时的深冷处理工艺为深冷温度-196 ℃、深冷时间12 h,此时冲击吸收能量仅降低1.2 J,而耐磨性提高41.6%。

关键词: 镐型截齿, 深冷处理, 全因子设计, 耐磨性, 冲击性能

Abstract: A new process of brazing-heat treatment-cryogenic treatment was proposed by introducing cryogenic treatment technology into the traditional brazing-heat treatment process of conical pick. The cryogenic treatment test scheme was designed by using the full factor method with the cryogenic temperature and time as the main process parameters, and the wear resistance of conical pick were tested by cutting rock test, along with determination of the impact toughness of pick body and the hardness of pick head and pick body, so as to study the influence of cryogenic treatment on the hardness, wear resistance and impact toughness of conical pick, finally getting the optimal cryogenic treatment process. The results show that the cryogenic treatment has no significant effect on the hardness of conical pick and a slight adverse effect on the impact toughness of conical pick, but it can significantly enhance the wear resistance of conical pick, which is beneficial to prolong the service life of conical pick. The optimal cryogenic treatment process is cryogenic temperature -196 ℃ and cryogenic time 12 h, in which the comprehensive performance is the best. At this time, the impact absorbed energy is only reduced by 1.2 J, while the wear resistance is increased by 41.6%.

Key words: conical pick, cryogenic treatment, full factor design, wear resistance, impact property

中图分类号:

TG156.91

张海东, 闫献国, 董良, 张洁, 赵学文. 深冷处理对镐型截齿硬度、耐磨性和冲击性能的影响及其优化[J]. 金属热处理, 2022, 47(12): 84-89.

Zhang Haidong, Yan Xianguo, Dong Liang, Zhang Jie, Zhao Xuewen. Effect of cryogenic treatment on hardness, wear resistance and impact property of conical pick and its optimization[J]. Heat Treatment of Metals, 2022, 47(12): 84-89.

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深冷处理对镐型截齿硬度、耐磨性和冲击性能的影响及其优化

Effect of cryogenic treatment on hardness, wear resistance and impact property of conical pick and its optimization

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