Effect of step quenching process on microstructure of high-Cr cast iron roll

doi:10.13251/j.issn.0254-6051.2022.07.003

Abstract

Abstract: Step quenching process of high chromium cast iron roller was simulated by using LINSEIS L78 dilatometer. The effect of step quenching temperature on Ms point, microstructure and hardness was studied by means of thermal dilation, optical microscopy(OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that the step quenching has little effect on the phase transformation during step quenching process, but it reduces the Ms point comparing with the direct quenching, and the Ms point decreases with the decrease of step quenching temperature. As the step quenching temperature is 560 ℃, the Ms point decreases a little, while the hardness increases to 62.1 HRC. Moreover, the hardness further increases to 64.5 HRC after tempering at 450-500 ℃.

Key words: roll, high-Cr cast iron, step quenching, Ms point, microstructure

CLC Number:

TG163

Zhang Bohan, Li Haonan, Gao Pengchong, Qiao Guiying, Liu Jiebing, Xiao Furen. Effect of step quenching process on microstructure of high-Cr cast iron roll[J]. Heat Treatment of Metals, 2022, 47(7): 15-19.

References

[1]俞誓达, 庞锐. 对我国轧辊行业发展的几点建议[J]. 轧钢, 2012, 29(2): 5-7.
Yu Shida, Pang Rui. Some suggestion for roll manufacture industry development in China[J]. Steel Rolling, 2012, 29(2): 5-7.
[2]秦翔, 杨军, 邹德宁, 等. 轧辊再制造及其表面强化技术的研究进展[J]. 材料保护, 2019, 52(2): 119-125.
Qin Xiang, Yang Jun, Zou Dening, et al. Research status of remanufacturing and surface reinforcement technology for milling roll[J]. Materials Protection, 2019, 52(2): 119-125.
[3]甘宅平. 热轧型钢轧辊材质的研究与发展方向[J]. 冶金设备, 2017(S2): 31-45.
[4]邵黎军, 周军, 冯喜峰. 热轧钢板带轧辊材质的选用[J]. 现代冶金, 2016, 44(4): 36-39.
[5]刘玉梅, 王立国. 高铬铁轧辊在带钢生产中的应用[J]. 冶金设备, 2012(S2): 87-88.
Liu Yumei, Wang Liguo. Application of casting iron roll with high chrome content in strip steel[J]. Metallurgical Equipment, 2012(S2): 87-88.
[6]刘杰兵, 张海峰, 陈兴富, 等. 原材料对高铬铸铁轧辊组织和硬度的影响[J]. 材料热处理学报, 2019, 40(12): 129-136.
Liu Jiebing, Zhang Haifeng, Chen Xingfu, et al. Effects of raw materials on microstructure and hardness ofhigh chromium cast iron rollers[J]. Transactions of Materials and Heat Treatment, 2019, 40(12): 129-136.
[7]郭健, 杨丽娜, 郝雷, 等. 热处理工艺对高铬铸铁轧辊组织与性能的影响[J]. 铸造设备与工艺, 2020(6): 39-41, 60.
Guo Jian, Yang Lina, Hao Lei, et al. Effect of heat treatment process on the structure and performance of high chromium cast iron roll[J]. Foundry Equipment and Technology, 2020(6): 39-41, 60.
[8]李具仓, 赵爱民. 高硬度高铬离心复合铸铁轧辊热处理[J]. 铸造技术, 2010, 31(4): 502-506.
Li Jucang, Zhao Aimin. Heat treatment for centrifugal composite cast high chromium cast iron roll with high hardness[J]. Foundry Technology, 2010, 31(4): 502-506.
[9]曹宇, 宋新莉, 郑爱琴, 等. 热处理工艺对离心铸造高铬铸铁轧辊组织及硬度的影响[J]. 金属热处理, 2020, 45(2): 108-113.
Cao Yu, Song Xinli, Zhen Aiqin, et al. Effect of heat treatment process on microstructure and hardness of high chromium cast iron roller produced by centrifuge casting[J]. Heat Treatment of Metals, 2020, 45(2): 108-113.
[10]高鹏冲. 高铬铸铁轧辊差温热处理工艺研究[D]. 石家庄: 河北科技大学, 2020.
Gao Pengchong. Study on differential heating heat treatmentof high chromium cast iron rolls[D]. Shijiazhuang: Hebei University of Science and Technology, 2020.[11]王晓敏. 工程材料学[M]. 北京: 机械工业出版社, 1999: 188.
[12]高鹏冲, 郑日升. 离心复合高铬铸铁轧辊的热处理工艺[J]. 中国金属通报, 2018(6): 198-199.
[13]李秀兰, 周新军, 谢文玲, 等. 合金化对高铬铸铁相析出的影响[J]. 金属热处理, 2015, 40(7): 78-81.
Li Xiulan, Zhou Xinjun, Xie Wenling, et al. Influence of alloying on phase precipitation of high chromium cast iron[J]. Heat Treatment of Metals, 2015, 40(7): 78-81.
[14]宁保群, 严泽生, 付继成, 等. Ms点以上保温时T91钢的奥氏体稳定化过程[J]. 材料科学与工程学报, 2011, 29(1): 21-24.
Ning Baoqun, Yan Zesheng, Fu Jicheng, et al. Austenitic stability process of T91 steel held isothermally above Ms[J]. Journal of Materials Science and Engineering, 2011, 29(1): 21-24.

[1]	Wang Shaohua, Zhong Liwei, Ma Zhifeng. Effect of high-temperature short-time solution treatment on microstructure and properties of ultra-high strength Al-Zn-Mg-Cu alloy forging [J]. Heat Treatment of Metals, 2022, 47(7): 20-26.
[2]	Zhong Xiuyang, Deng Tongsheng, Zhu Zhiyun, Li Shang, Zhong Ming, Guo Tao. Effect of aging on microstructure and properties of rare earth Sc microalloyed titanium alloy [J]. Heat Treatment of Metals, 2022, 47(7): 40-46.
[3]	Hou Jinrui, Lu Ruoding, Bu Shaocong, Xu Shuailing, Fu Lihua, Tian Baohong. Effect of annealing temperature on microstructure and corrosion resistance of AlCrMnFeNiCu_0.8 high-entropy alloy [J]. Heat Treatment of Metals, 2022, 47(7): 52-57.
[4]	Zhang Mingjun, Li Yuan, Li Xianghui. Effect of hot isostatic pressing on microstructure of nickel-based superalloy K4125 [J]. Heat Treatment of Metals, 2022, 47(7): 71-75.
[5]	Fan Shuaiqi, Li Haitao , Wang Xuesong, Zhang Leitao, Xu Jinfu, Dai Jiaoyan. Process optimization of CuIn₅ alloy prepared by sparking plasma sintering [J]. Heat Treatment of Metals, 2022, 47(7): 76-80.
[6]	Wang Hua, Wang Zeyu, Song Jiaming, Qu Zonghong, Lai Yunjin, Liang Shujin. Effect of solution treatment on microstructure and properties of powder metallurgy GH4099 alloy [J]. Heat Treatment of Metals, 2022, 47(7): 86-91.
[7]	Fan Lifeng, Kang Ze, Jia Liying, Xu Huimin, Gao Jun. Effect of reverse phase transformation annealing temperature after quenching on microstructure and properties of 5%Mn cold rolled medium manganese steel [J]. Heat Treatment of Metals, 2022, 47(7): 92-97.
[8]	Yu Huang, Wang Feiyu, Bao Cuimin, Wang Quanzhen, Chen Wei, Qu Deyi, Jiang Shenzhu, Ma Yulin. Effect of heating arrival time lag on microstructure and properties of FV520B steel during vacuum aging [J]. Heat Treatment of Metals, 2022, 47(7): 98-101.
[9]	Zhang Wenwen, Dong Futao, Liu Yunshuang, Tian Yaqiang, Chen Liansheng. Effect of finishing rolling temperature on microstructure and mechanical properties of Cu-alloyed Fe-18Mn-0.6C TWIP steel [J]. Heat Treatment of Metals, 2022, 47(7): 102-106.
[10]	Fu Xibin, Meng Shaobo, Liu Wensheng, Zhang Ke, Li Zhaodong, Cao Yanguang, Zhang Xiaofeng, Yong Qilong. Effect of solution treatment on microstructure and mechanical properties of Fe-30Mn-10Al-1C low density steel [J]. Heat Treatment of Metals, 2022, 47(7): 114-119.
[11]	Han Jungang, Shao Zhiwen, Song Yunkun, Chen Xiaohu, Ding Boyuan, Gu Jiaojiao. Effect of heat treatment on microstructure and properties of 4Cr5MoSiV1 steel for needle valve body [J]. Heat Treatment of Metals, 2022, 47(7): 120-124.
[12]	Xu Rongchang, Wang Yi, Sun Zonghui, Li Hui. Influence of heat treatment on microstructure and properties of Mo-containing bearing steel [J]. Heat Treatment of Metals, 2022, 47(7): 125-128.
[13]	Yin Jian, Jin Kang, Li Cheng, Dong Qi, Shen Zhi, Zhang Bo. Effect of aging on microstructure and bending properties of 7022 aluminum alloy [J]. Heat Treatment of Metals, 2022, 47(7): 144-150.
[14]	Jang Wenmiao, Hu Zhihua, Luan Daocheng, Zhang Xu, Ling Junhua, Yin Zhiming, Li Yuan, Zhou Xinyu, Wang Zhengyun. Microstructure and properties of new type bainitic leaf spring steel [J]. Heat Treatment of Metals, 2022, 47(7): 151-155.
[15]	Guo Chunyan, Liu Yubao, Yang Pengfei, Li Yuan, Lü Weidong , Gao Rizeng, Zhang Yang, Hou Fusheng. Recrystallizing annealed microstructure evolution of severe cold rolled FeCoCrNiMn high entropy alloy [J]. Heat Treatment of Metals, 2022, 47(7): 163-167.