基于相变热模拟方法的工艺调控对HRB400E组织和性能影响的研究  

STUDY ON THE EFFECT OF PROCESS CONTROL ON THE MICROSTRUCTURE AND PROPERTIES OF HRB400 BASED ON PHASE CHANGE THERMAL SIMULATION METHOD

作　　者：郝飞翔 张晗 罗培根 梁伟佳 郭福建 李秀程 Hao Feixiang;Zhang Han;Luo Peigen;Liang Weijia;Guo Fujian;Li Xiucheng(Yang Chun New Iron and Steel Co.,Yangchun,529600,China;Yang Jiang Advanced Alloys Laboratory,Yangjiang,529500,China;School of Mechanical Engineering,Jinan University,Jinan,250022,China;School of Materials Science and Engineering,Guangdong Ocean University,Yangjiang,529500;State Key Laboratory of Advanced Metal Materials,University of Science and Technology Beijing,Beijing,100083,China)

机构地区：[1]阳春新钢铁有限责任公司,阳春529600 [2]阳江合金材料实验室,阳江529500 [3]济南大学机械工程学院,济南250022 [4]广东海洋大学材料科学与工程学院,阳江529500 [5]北京科技大学新金属材料国家重点实验室,北京100083

出　　处：《冶金信息导刊》2024年第4期16-21,共6页Metallurgical Information Review

基　　金：基于大数据技术的高端线棒材产品质量提升研究(编号SDZX2021007)。

摘　　要：线材是钢材加工中一种最基本的原料,通常线材的直径为5.5~16 mm。高速线材轧制后的冷却控制方式方法,直接影响线材产品的金相组织组成及晶粒度的大小,是决定产品机械性能的关键因素,也决定了线材产品的质量优劣,针对6规格HRB400E钢筋出现延伸率不合问题,并达到精准调控组织目的,采用DIL 805L热膨胀仪进行试验,并利用EBSD确定相应相比例;并根据试验结果优化控冷工艺。试验结果表明,冷却速率为3℃/s时,开始出现贝氏体组织,冷却速率为20℃/s时,出现马氏体组织,且优化控冷工艺后,解决了6规格HRB400E钢筋出现延伸率不合问题,并进一步优化了成本。Wire rod is one of the most basic raw materials in steel processing,usually the diameter of wire rod is 5.5-16 mm.The cooling control method after high-speed wire rod rolling directly affects the metallographic structure composition and grain size of the wire rod product,which is the key factor that determines the mechanical properties of the product,and also determines the quality HRB400E of the wire rod product.The experimental results show that bainite structure begins to appear when the cooling rate is 3°C/s,and martensite structure appears when the cooling rate is 20℃/s HRB400E.

关 键 词：高速线材 HRB400E CCT 控制冷却 相变温度 

分 类 号：TG33[金属学及工艺—金属压力加工]