超大尺寸高性能异材质多复合平板硫化机加热板的研究与开发  

Research and development on heating plate for ultra large size,high performance,different materails and multi composite plate of vulcanization machine

作　　者：邬早勤 谢广明[2] 王磊[3] 骆宗安[2] Wu Zaoqin;Xie Guangming;Wang Lei;Luo Zong′an(Tangshan Wenfeng Special Steel Co.,Ltd.,Tangshan 063200,China;State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China;School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300131,China)

机构地区：[1]唐山文丰特钢有限公司,河北唐山063200 [2]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 [3]河北工业大学材料科学与工程学院,天津300131

出　　处：《锻压技术》2024年第5期102-108,共7页Forging & Stamping Technology

基　　金：河北工业大学教学改革项目(209334110)。

摘　　要：采用真空焊接复合制备了45钢+Q355B钢的AB型坯料,并通过调整该AB型复合坯料加热时在加热炉的上、下烧嘴的加热负荷,对AB型钢板进行了不对称复合坯轧制。通过二次真空焊接复合制备了45钢+Q355B钢+Q355B钢+45钢的ABBA型坯料,并对焊缝进行焊后高温回火处理,得到了ABBA型轧制复合板。结果表明:ABBA型复合板的界面为良好的冶金结合,平均硬度值为(180±10)HBW,组织成分均匀,各位置的硬度无明显差异。基材45钢中主要由片状珠光体和块状铁素体组成,复材Q355B钢主要由大量铁素体和少量珠光体组成。复合板厚度方向的断面收缩率平均值为62.67%,性能优异。此外,还实际生产了170 mm×3420 mm×10620 mm的ABBA型复合板,单重超过48000 kg。AB billet of 45 steel+Q355B steel was prepared by vacuum welding,and the AB billet was rolled asymmetrically by adjusting the heating load of upper and lower burners of heating furnace when the AB billet was heated.Then,ABBA billet of 45 steel+Q355B steel+Q355B steel+45 steel was prepared by secondary vacuum welding,and the weld seams were subjected to high-temperature tempering treatment after welding to obtain ABBA rolled composite plates.The results show that the interface of ABBA composite plate is good metallurgical bonding,the average hardness value is(180±10)HBW,the microstructure composition is uniform,and the hardness of each position has no obvious difference.The substrate 45 steel is mainly composed of flake pearlite and block ferrite,while the composite Q355B steel is mainly composed of a large amount of ferrite and a small amount of pearlite.The average cross-section shrinkage rate in the thickness direction of composite plate is 62.67%,indicating excellent performance,and 170 mm×3420 mm×10620 mm ABBA composite board with a unit weight exceeding 48000 kg is produced actually.

关 键 词：45钢 Q355B钢 复合板 轧制 高温塑性 

分 类 号：TG335[金属学及工艺—金属压力加工]