430不锈钢的连续退火工艺  

Continuous annealing process of 430 stainless steel

作　　者：杨永超 李玉贵[1] 赵子钧[2,3] Yang Yongchao;Li Yugui;Zhao Zijun(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China;State Key Laboratory of Advanced Stainless Steel Materials,Taiyuan Iron&Steel(Group)Co.,Ltd.,Taiyuan Shanxi 030003,China;Technology Center,Shanxi Taigang Stainless Steel Co.,Ltd.,Taiyuan Shanxi 030003,China)

机构地区：[1]太原科技大学材料科学与工程学院,山西太原030024 [2]太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室,山西太原030003 [3]山西太钢不锈钢股份有限公司技术中心,山西太原030003

出　　处：《金属热处理》2024年第8期130-135,共6页Heat Treatment of Metals

基　　金：中央引导地方科技发展资金(YDZJSX2021A036)。

摘　　要：430不锈钢热轧板退火一般在罩式炉中进行,生产周期长,严重制约生产能力的提升。通过化学成分及退火工艺的优化,对430不锈钢热轧板的连续退火工艺进行了试验研究。结果表明,在实验室条件下,430不锈钢的最佳连续退火工艺为退火温度880℃、保温时间240 s;在910℃退火时,存在奥氏体转变。结合实际大生产工况情况,退火酸洗产线的热处理温度设定范围为(880±5)℃。热轧态430不锈钢经连续退火后条带组织无法完全消除;经冷轧变形及成品退火酸洗后,试验钢伸长率达到了26%以上,可满足浅冲压行业的使用需求。Annealing of 430 stainless steel hot rolled plate is generally carried out in the bell⁃type furnace,which has a long production cycle and seriously restricts the improvement of production capacity.Experimental research was conducted on the continuous annealing process of the 430 stainless steel hot rolled plates through optimization of chemical composition and annealing process.The results show that under laboratory conditions,the optimal heat treatment process of the 430 stainless steel is annealing at 880℃and holding for 240 s.Austenite transformation occurs when annealed at 910℃.Based on the actual production conditions,the heat treatment temperature range for the annealing and pickling production line can be set to(880±5)℃.The strip structure of the hot rolled 430 stainless steel cannot be completely eliminated after continuous annealing.After cold rolling,finishing annealing and pickling,the elongation of the tested steel reaches over 26%,which can meet the usage needs of the shallow stamping industry.

关 键 词：连续退火 430不锈钢 组织 性能 

分 类 号：TG142.71[一般工业技术—材料科学与工程]