Continuous annealing process of fine blanked steel for 1750mm tandem cold rolling mills
CHEN Jin- shan1,WANG Jun1,CEN Yi- ming1,FU Bo2
1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, Liaoning, China 2. Baosteel Stainless Steel Co., Ltd., Shanghai 200431, China
Abstract:Continuous annealing process is an important segment in tandem cold rolling technology of fine blanked strip steels, which has significant effects on structure property of rolled strips. The rolling lubrication experiment was studied in the laboratory. Meanwhile, the various continuous annealing process schedules were developed and the continuous annealing experimental research was carried out with CAS-300 continuous annealing simulator. It can be determined the value of recrystallization temperature for C15/2 fine blanked steels was about 550℃. According to the different-sized fine blanked strip steels in tandem cold rolling, the continuous annealing process schedules that were applicable for industrial production of tandem cold rolling process were provided by the tensile test and microstructure observation. Statistics indicated that good comprehensive mechanical properties for microstructure of fine blanked steels could be obtained on the condition that the yield strength of annealed samples was successfully controlled within (310±20)MPa, the tensile strength of annealed samples was below 450MPa, and the elongation of annealed samples exceeded 30%. The study can completely meet the demand for industrial practice and is significant for the research on annealing process of fine blanked steels in tandem cold rolling.
收稿日期: 2015-07-24
出版日期: 2016-03-22
通讯作者:
陈金山
E-mail: cjscjs2009@sina.com
引用本文:
陈金山,王君,岑一鸣,付博. 1750mm冷连轧精冲钢的连续退火工艺[J]. 中国冶金, 2016, 26(03): 7-12.
CHEN Jin- shan,WANG Jun,CEN Yi- ming,FU Bo. Continuous annealing process of fine blanked steel for 1750mm tandem cold rolling mills. China Metallurgy, 2016, 26(03): 7-12.