基于CSP工艺锯片钢75Cr1静态再结晶研究

特殊钢 ›› 2017, Vol. 38 ›› Issue (5): 5-9.

基于CSP工艺锯片钢75Cr1静态再结晶研究

宋娜娜¹, 鲍思前¹, 赵刚¹, 蔡珍², 徐洋¹, 黄祥斌¹

1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室，武汉 430081;
2. 武汉钢铁(集团)公司研究院，武汉 430080 ；

出版日期:2017-10-01 发布日期:2022-07-08
作者简介:宋娜娜(1993-)，女，硕士研究生,2014年北华航天工业学院(本科)毕业,中高碳钢组织和性能控制。
基金资助:
湖北省自然科学基金项目(2014CFB819) ；
武汉市科学技术计划项目(2015010303010150)资助；

A Study on Static Recrystallization of Saw Steel 75Cr1 Based on CSP Process

Song Nana¹, Bao Siqian¹, Zhao Gang¹, Cai Zhen², Xu Yang¹, Huang Xiangbin¹

1. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081 ；
2. Research and Development Center, Wuhan Iron and Steel Co Ltd, Wuhan 430080;

Published:2017-10-01 Online:2022-07-08
Supported by:
Project of Natural Science Foundation of Hubei Province (2014CFB819) ;
Funded by the Wuhan Science and Technology Programme (2015010303010150) ;

摘要/Abstract

摘要： 试验用75Cr1钢（/%:0.76C,0.30Si,0.70Mn,0.45Cr,0.010P,0.003S）的CSP流程为150t BOF-LF-60mm板坯连铸-连轧。通过Thermecmastor-Z热模拟实验机对取自锯片钢75Cr1 60mm铸坯的试样进行了双道次热压缩实验,分析了温度（1000~1150℃）,变形量（0.1~0.22）,变形速率(0.1~10s^-1)以及道次间隔时间（1~80s）对其静态再结晶的影响,并采用2%应力补偿计算了不同变形条件下的静态再结晶百分率,建立了基于CSP工艺锯片钢75Cr1静态再结晶动力学模型。利用VB编制模拟软件,结合现场生产工艺参数,预报CSP工艺生产75Cr1钢热轧过程中组织演变,得出75Cr1钢合适的精轧工艺-精轧人口温度1150℃,变形量0.22,应变速率1s^-1,道次间隔时间30s。

关键词: 锯片钢75Cr1, CSP工艺, 双道次压缩, 静态再结晶, 动力学模型, 模拟软件

Abstract: The CSP flowsheet of tested steel 75Cr1 (/% : 0.76C, 0.30Si, 0.70Mn, 0.45Cr, 0.010P, 0.003S) is 150t BOF-LF-60mm Slab Casting-Continuous Rolling. The test of double-pass hot deformation of sample taking from 60mm casting slab of steel 75Cr1 has been carried out by Thermecmastor-Z thermal simulator to analyze the effect of temperature (1000~1150°C ) , deformation (0.1 ~0.22) , strain rate (0.1 ~ 10^-1) and pass interval time ( 1~80s) on static recrystallization of steel. And static recrystallization fraction in different deformation conditions is calculated by using 2% stress compensation method, and the static recrystallization kinetic model of saw steel 75Cr1 based on CSP process is established. The evolution of structure of steel 75Cr1 in hot-rolling process of CSP flowsheet may predict by VB simulation software combined with process parameters at situ. It is obtained that the suitable finishing rolling process parameters for steel 75Cr1 are finishing inlet temperature of steel 1150℃，deformation 0.22, strain rate 1s^-1 and pass interval time 30s.

宋娜娜, 鲍思前, 赵刚, 蔡珍, 徐洋, 黄祥斌. 基于CSP工艺锯片钢75Cr1静态再结晶研究[J]. 特殊钢, 2017, 38(5): 5-9.

Song Nana, Bao Siqian, Zhao Gang, Cai Zhen, Xu Yang, Huang Xiangbin. A Study on Static Recrystallization of Saw Steel 75Cr1 Based on CSP Process[J]. Special Steel, 2017, 38(5): 5-9.

参考文献

[1] 徐立山，林大帅.锯片用钢75Cr1的开发[J].河北冶金,2015(1)：4-6.
[2] 郭金星，鲍思前，彭联，等.30CrMo钢60mm连铸板坯双道次压缩的奥氏体静态再结晶[J].特殊钢,2016,37(2).54-57.
[3] 张亚琦，赵刚,鲍思前，等.SKS51脱碳分析及其对淬硬性的影响[J].热加工工艺,2012,41(8):189-191.
[4] 吴浩,鲍思前，赵刚，等.双道次热压缩50CrV4弹簧钢奥氏体的静态再结晶[J].特殊钢,2014,35(6):51-53.
[5] 郭金星.基于CSP工艺合金工具钢75Crl再结晶研究及组织预报[D].武汉:武汉科技大学,2016.
[6] Kim S, Lee Y, Jiang B L. Modeling of Recrystallization and Austenite Grain Size for AISI 316 Stainless Steel and its Application to Hot Bar Rolling[J]. Materials Science and Engineering A,2003,357(I):235-239.
[7] Zhang Z H, Liu Y N, Liang X K,et al. The Effect of Nb on Recrystallization Behavior of a Nb Micro-Alloyed Steel [J]. Materials Science and Engineering A,2008,474(1)：254-260.
[8] 蔺永诚，陈明松，钟撅.42CrMo钢形变奥氏体的静态再结晶[J].中南大学学报(自然科学版),2009,40(2)：411-415.
[9] 徐光，徐楚韶,赵嘉蓉，等.Ti-IF钢多道次变形静态再结晶研究[J].钢铁钒钛,2005,26(4)：39-42.
[10] Ma Bo,Peng Yan, Jia Bin,et al. Static Recrystallization Kinetics Model after Hot Deformation of Low-Alloy Steel Q345B[J]. Science Direct,2010,17(8)：61-66.
[11] Li Xiong,Zhang Hong-bing,Ruan Xue-yu,et al. Kinetics for Static Recrystallization after Hot Working of 0.38C-0.99Cr-0.16Mo Steel [J]. Journal of Central South University of Technology.2004,11(4)：353-357.
[12] Rao K P, Prasad Y K D V,Hawboly E B. Study of Fractional Softening in Multi-Stage Hot deformation[J]. Journal of Materals Processing Technology. 1998,77(1)：166-174.
[13] Cho S H, Kang K B, Jonas J J, et al. Effect of Manganese on Recrystallization Kinetics of Niobium Microalloyed Steel [J]. Journal of Materials Science & Technology, 2002, 18(3)：389-395.
[14] Gdmez M, Medina S F, Quispe A, et al. Static Recrystallization and Induced Precipitation in a Low Nb Microalloyed Stee [J]. Journal of the Iron and Steel Institute of Japan (International), 2002, 42(4)：423-431.
[15] Stewart G R, Jonas J J. Static and Dynamic Strain Aging at High Temperatures in 304 Stainless Steel [J]. ISIJ International, 2004, 44(7):1263-1272.
[16] Femdndez A I,Uranga P,L6pez B,et al. Static Recrystallization Behavior of a Wide Range of Austenite Grain Sizes in Microalloyed Steels[J].ISIJ International,2000,40(9)：893-901.