Transactions of Materials and Heat Treatment

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

Authors： Wu Zaoqin1 Xie Guangming2 Wang Lei3 Luo Zong′an2

Unit： (1. Tangshan Wenfeng Special Steel Co. Ltd. Tangshan 063200 China 2. State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China 3. School of Materials Science and Engineering Hebei University of Technology Tianjin 300131 China)

KeyWords： 45 steel Q353B steel composite plate rolling high temperature plasticity

ClassificationCode：TG335

year,vol(issue):pagenumber：2024,49(5):102-108

Abstract：

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.

Funds：

基金项目:河北工业大学教学改革项目（209334110）

作者简介：邬早勤（1982-），男，硕士，高级工程师 E-mail：wuzaoqin@163.com

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