奥氏体不锈钢热轧卷在线固溶退火工艺研究及实践  

Research and practice of on-line solution and annealing process for hot strip of austenitic stainless steel

作　　者：李海军[1] 赵健康 何丛珍 韩波 武继权 王国栋[1] LI Haijun;ZHAO Jiankang;HE Congzhen;HAN Bo;WU Jiquan;WANG Guodong(State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China;Guangdong GuangQing Metal Technology Co.,Ltd.,Yangjiang 529599,China)

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819 [2]广东广青金属科技有限公司,广东阳江529599

出　　处：《轧钢》2024年第6期12-16,24,共6页Steel Rolling

摘　　要：在传统生产工艺流程中,奥氏体不锈钢热轧卷需要进行离线固溶退火处理后才能交付给下游用户,生产周期长、能源消耗大。在线固溶退火技术可充分利用轧制余热进行热处理,具有节能环保的巨大优势。介绍了奥氏体不锈钢热轧卷在线固溶退火的关键调控技术,并依托广青1 780 mm热轧产线,开展了奥氏体不锈钢热轧卷在线固溶退火工业试验,以试验获得的热轧“黑皮卷”为原料,免固溶退火直接酸洗后进行冷轧,产品的力学性能、抗晶间腐蚀性能及表面质量较常规工艺无明显差异,充分证实了以在线热处理工艺代替离线固溶退火生产高板面等级不锈钢冷轧板卷的可行性。For traditional production process,the hot strip of austenitic stainless steel must be treated with off-line solution and annealing process before being delivered to the downstream user,which has a long production cycle and large energy consumption.On-line solution and annealing process can make full use of residual heat of hot strip after rolling for heat treatment,which has great advantages of energy saving and environmental protection.The key control techniques of on-line solution and annealing for hot strip of austenitic stainless steel were introduced.Based on 1780 mm hot rolling line of GuangQing Metal Technology Co.,Ltd.,the industrial experiment of on-line solution and annealing was carried out.The hot rolled coil covered with“black skin”was obtained from the industrial experiment as raw material,and then was cold rolled after direct pickling without off-line solution and annealing treatment.The mechanical properties,resistance of intergranular corrosion and surface quality of the product were not significantly different from that of cold rolled coil produced with the conventional process,the feasibility of using the on-line heat treatment process instead of off-line solution and annealing process to produce high surface grade stainless steel cold rolled coil was fully proved.

关 键 词：在线固溶退火 奥氏体不锈钢 力学性能 抗晶间腐蚀性能 表面质量 节能减耗 降低成本 

分 类 号：TG1[金属学及工艺—金属学]