Heat treatment process of 75Cr1 steel for saw blade substrate and its microstructure and mechanical properties

doi:10.13251/j.issn.0254-6051.2021.09.035

Abstract

Abstract: Microstructure, grain sizes, carbide distribution and mechanical properties of the 75Cr1 steel for saw blade substrate under different heat treatment processes were studied. The results show that microstructures are fine acicular martensite and a less amount of residual austenite after quenching between 780 ℃ and 840 ℃, and the hardness increases slightly with the increase of quenching temperature around the level of 63 HRC. The grain size decreases from grade 10 to grade 8, and unevenness of grains is greater with the increase of temperature. With the increase of tempering temperature, the microstructure changes from tempered troostite to tempered sorbite, and the amounts of granular carbides increase. Quenched at 800 ℃ and tempered at 540 ℃, the microstructure of tempered sorbite with a dispersed distribution of fine carbides is obtained. The hardness of the 75Cr1 steel is 36.5 HRC, with good matching of strength and toughness.

Key words: saw blade steel 75Cr1, heat treatment process, microstructure, mechanical properties, grain size

CLC Number:

TG142.1

Dong Shaoming, Hu Jianwen, Liang Ziyu. Heat treatment process of 75Cr1 steel for saw blade substrate and its microstructure and mechanical properties[J]. Heat Treatment of Metals, 2021, 46(9): 193-198.

References

[1]郭继富. 金属冷切圆锯片在轧钢生产中的应用[J]. 冶金设备, 2005(1): 43-48.
Guo Jifu. Application of metal cold-cutting circular saw blade in steel rolling[J]. Metallurgical Equipment, 2005(1): 43-48.
[2]金欣, 周健. Mo-W-Co系高热强性热锻模具钢的组织与性能[J]. 金属热处理, 2018, 43(2): 8-14.
Jin Xin, Zhou Jian. Microstructure and mechanical properties of Mo-W-Co high hot-strength hot-work die steels[J]. Heat Treatment of Metals, 2018, 43(2): 8-14.
[3]王孟, 宝志坚. 汽车轴类热锻模具的失效形式与分析[J]. 中国工程机械学报, 2008, 6(3): 364-369.
Wang Meng, Bao Zhijian. Deficiency formation and analysis on automotive axle heat-forged mould[J]. Chinese Journal of Mechanical Engineering, 2008, 6(3): 364-369.
[4]Buyuksagis I S. Effect of cutting mode on the sawability of granites using segmented circular diamond sawblade[J]. Journal of Materials Processing Technology, 2007, 183(2-3): 399-406.
[5]苑少强, 郭继富. 回火温度对冶金锯片用钢75Cr1回火组织及性能的影响[J]. 河北冶金, 2009, 38(5): 17-18.
Yuan Shaoqing, Guo Jifu. Influence of tempering temperature on structure and property of 75Crl steel for metallurgical saw shade[J]. Hebei Metallurgy, 2009, 38(5): 17-18.
[6]张新明, 朱永伟. 金刚石锯片在锯切过程中的受力与失效分析[J]. 摩擦学学报, 2001, 21(6): 464-468.
Zhang Xinming, Zhu Yongwei. Force and failure analysis of diamond saw-blade in cutting of granite[J]. Tribology, 2001, 21(6): 464-468.
[7]张文, 朱百智, 黄振建, 等. 淬火介质对 42CrMo 钢棒淬火组织及硬度影响的数值模拟及试验验证[J]. 金属热处理, 2020, 45(1): 56-60.
Zhang Wen, Zhu Baizhi, Huang Zhenjian, et al. Numerical simulation and experimental verification of effect of quenching medium on quenching microstructure and hardness of 42CrMo steel rod[J]. Heat Treatment of Metals, 2020, 45(1): 56-60.
[8]Jerro H D, Pang S S, Yang C, et al. Kinematics analysis of the chipping process using the circular diamond saw blade[J]. Journal of Manufacturing Science & Engineering, 1999, 121(2): 257-264.
[9]宋城, 樊雪琴. 高效耐磨金刚石锯片的研制[J]. 金刚石与磨料磨具工程, 2006(6): 32-35.
Song Cheng, Fan Xueqin. Preparation of high-efficient and wear-resisting diamond saw[J]. Diamond & Abrasives Engineering, 2006(6): 32-35.
[10]何浪. 75Cr1薄板坯高温力学性能研究及配水工艺优化[D]. 长沙: 中南大学, 2013.
He Lang. Study on high temperature thermoplastic property and optimization water-cooling technology of 75Cr1 sheet billet[D]. Changsha: Central South University, 2013.
[11]张阳, 王福明, 唐郑磊, 等. SXQ500/550D 钢奥氏体晶粒长大行为及其影响因素[J]. 金属热处理, 2019, 44(8): 110-118.
Zhang Yang, Wang Fuming, Tang Zhenglei, et al. Austenite grain growth behavior and its influencing factors of SXQ500/550D steel[J]. Heat Treatment of Metals, 2019, 44(8): 110-118.
[12]孙宜强, 甘晓龙, 汪水泽, 等. 金刚石锯片基体用钢75Cr1的连续冷却转变曲线研究[J]. 热加工工艺, 2019, 48(4): 92-95.
Sun Yiqiang, Gan Xiaolong, Wang Shuize, et al. Study on continuous cooling transformation curves of 75Cr1 steel for diamond saw blades matrix[J]. Hot Working Technology, 2019, 48(4): 92-95.
[13]陈明昕, 杨晓江, 冯晓勇. Nb元素添加对75Cr1钢热变形行为的影响[J]. 中国冶金, 2020, 30(6): 71-79.
Chen Mingxin, Yang Xiaojiang, Feng Xiaoyong. Effect of niobium addition on hot deformation behavior of 75Cr1 steel [J]. China Metallurgy, 2020, 30(6): 71-79.
[14]戚正风. 金属热处理原理[M]. 北京: 机械工业出版社, 1987.

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