控轧控冷工艺对Q235B热轧H型钢氧化铁皮特征及剥离性能的影响  

Effect of Controlled Rolling and Controlled Cooling Process on Characteristics and Peel-off Property of Oxide Scale of Q235B Hot Rolled H-beam

作　　者：田亚强 蒲实 王惠聪 吴立红 柳鑫华 李秀清 陈连生 TIAN Yaqiang;PU Shi;WANG Huicong;WU Lihong;LIU Xinhua;LI Xiuqing;CHEN Liansheng(Key Laboratory of the Ministry of Education for Modern Metallurgy Technology,North China University of Science and Technology,Tangshan 063210,China;Hebei Tianzhu Iron and Steel Group Co.,Ltd.,Tangshan 063000,China;Department of Chemistry,Tangshan Normal University,Tangshan 063000,China)

机构地区：[1]华北理工大学教育部现代冶金技术重点实验室,河北唐山063210 [2]河北天柱钢铁集团有限公司,河北唐山063000 [3]唐山师范学院化学系,河北唐山063000

出　　处：《热加工工艺》2024年第15期144-148,共5页Hot Working Technology

基　　金：河北省自然科学基金项目(E2020209127)。

摘　　要：对Q235B热轧坯料进行了实验室模拟轧制和弯折矫直试验。结合SEM、XRD等试验手段,研究了控轧控冷工艺参数对Q235B热轧H型钢氧化铁皮特征及其剥离性能的影响规律。结果表明:在其他轧制工艺参数相同的条件下,随着终轧温度的升高,氧化铁皮的厚度呈增加趋势,FeO相比率增加,Fe_(3)O_(4)相比率降低。随着冷却速度的提高,氧化皮的厚度呈减小趋势,FeO相比率增加,Fe_(3)O_(4)相比率降低。随着Fe_(3)O_(4)相比率增加,FeO相比率降低,氧化皮从大块剥离向小块剥离再向细粉状剥离过渡。The laboratory simulation rolling and bending straightening tests were carried out for the Q235B hot-rolled billet.Combined with SEM,XRD and other experimental methods,the effect of controlled rolling and controlled cooling process parameters on the characteristics of scale and peelability of Q235B hot-rolled H-beam steel was studied.The results show that under the same conditions of other rolling process parameters,with the increase of finishing temperature,the thickness of iron oxide scale increases,the ratio of FeO increases,and the ratio of Fe_(3)O_(4)decreases.With the increase of the cooling rate,the thickness of the oxide scale decreases,the FeO phase ratio increases,and the Fe_(3)O(4)phase ratio decreases.With the increase of the Fe_(3)O_(4)ratio,the FeO ratio decreases,and the oxide scale transits from bulk peeling to small-block peeling and then to fine powder-like peeling.

关 键 词：热轧H型钢 控轧控冷 氧化铁皮 弯折矫直 剥离 

分 类 号：TG335.1[金属学及工艺—金属压力加工]