Technology and application of rolling continuous quenching equipment for ultra-thin high-strength steel plates
FU Tian-liang1,2, TIAN Xiu-hua1,2, DENG Xiang-tao1,2, ZHANG Tian1,2, LIU Guang-hao1,2, WANG Zhao-dong1,2
1. State Key Laboratory of Rolling and Automation, Shenyang 110819, Liaoning, China; 2. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, Liaoning, China
Abstract：The quenching of ultra-thin high-strength steel plates with high flatness is a technical problem in the industry. Based on the new understanding of high-efficiency heat transfer and quenching deformation mechanism, the constrained quenching deformation mechanism and low residual stress quenching method of wide and thin steel plates were proposed. Core components such as multi-frame high-rigidity hydraulic servo-controlled roller system and high-strength uniform array jet water jet cutter were invented. The world′s first set of ultra-thin and high-strength steel plate rolling quenching equipment and new quenching technologies such as asymmetric quenching, differential tension quenching, and stepwise restrained quenching was successfully developed. The heat treatment technology system of 3-6 mm ultra-thin high-strength steel plate was independently integrated. After applying the equipment technology, the quenching unevenness of 3 mm steel plate quenching was no large than 3-4 mm/2 m, and after heat treatment, the steel plate was not deformed after cutting, and was not cracked after 180° bending after welding, realizing stable quenching production in batches.
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2021, Vol. 31 
