淬火工艺对42CrMo钢刀毂淬硬层深度及力学性能的影响

doi:10.13251/j.issn.0254-6051.2023.09.014

金属热处理 ›› 2023, Vol. 48 ›› Issue (9): 88-91.DOI: 10.13251/j.issn.0254-6051.2023.09.014

淬火工艺对42CrMo钢刀毂淬硬层深度及力学性能的影响

姜影, 杜水明, 黄俏梅, 沈子达, 游菲

株洲中车天力锻业有限公司, 湖南株洲 412001

收稿日期:2023-05-01 修回日期:2023-08-03 出版日期:2023-09-25 发布日期:2023-10-25
作者简介:姜影(1988—),女,高级工程师,硕士,主要研究方向为金属材料的热处理及表面处理,E-mail:jiang1985000@163.com

Effect of quenching process on hardened depth and mechanical properties of 42CrMo steel cutter hub

Jiang Ying, Du Shuiming, Huang Qiaomei, Shen Zida, You Fei

Zhuzhou CRRC Timely Forge Co., Ltd., Zhuzhou Hunan 412001, China

Received:2023-05-01 Revised:2023-08-03 Online:2023-09-25 Published:2023-10-25

摘要/Abstract

摘要： 采用多用炉选择不同淬火温度、不同淬火介质及碳势浓度,对42CrMo钢刀毂进行淬火,通过力学性能、组织及硬度的检验,研究了各影响因素对刀毂力学性能和淬硬层深度的影响。结果表明,随着淬火介质冷却速度的增加,在850~890 ℃淬火时,刀毂的抗拉强度呈现整体上升的趋势。当淬火温度为850 ℃时,采用淬火介质D时,刀毂的拉伸性能最好,淬透层深度可达到6.0 mm。当淬火温度为870 ℃时,采用C介质,淬透层深度满足客户要求。当碳势为0.6%时,随着淬火温度的升高,刀毂淬透层深度先上升后下降,抗拉强度呈下降趋势,屈服强度及伸长率呈上升趋势。

关键词: 刀毂, 淬火温度, 淬火介质, 碳势

Abstract: 42CrMo steel cutter cub was quenched by using a multi-purpose furnace at different quenching temperatures, different quenching media and carbon potentials. The influence of various factors on mechanical properties and depth of hardened layer of the cutter cub was studied through the inspection of mechanical properties, microstructure and hardness. The results show that with the increase of quenching medium cooling rate, the tensile strength of the cutter cub quenched at 850-890 ℃ shows a trend of overall increase. When the quenching temperature is 850 ℃, the tensile properties of the cutter cub is the best when the quenching medium D is used, and the depth of quenched layer reaches 6.0 mm. When the quenching temperature is 870 ℃, after using C medium, the depth of quenched layer meets the customer's requirements. When the carbon potential is 0.6%, with the increase of quenching temperature, the depth of the quenched layer first increases and then decreases, the tensile strength decreases, and the yield strength and elongation increase.

Key words: cutter cub, quenching temperature, quenching medium, carbon potential, hardened depth

中图分类号:

TG156.32

姜影, 杜水明, 黄俏梅, 沈子达, 游菲. 淬火工艺对42CrMo钢刀毂淬硬层深度及力学性能的影响[J]. 金属热处理, 2023, 48(9): 88-91.

Jiang Ying, Du Shuiming, Huang Qiaomei, Shen Zida, You Fei. Effect of quenching process on hardened depth and mechanical properties of 42CrMo steel cutter hub[J]. Heat Treatment of Metals, 2023, 48(9): 88-91.

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淬火工艺对42CrMo钢刀毂淬硬层深度及力学性能的影响

Effect of quenching process on hardened depth and mechanical properties of 42CrMo steel cutter hub

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