Transactions of Materials and Heat Treatment

Title：Effect of four-pass hot rolling process on performance of 316 stainless steel clad 45 steel chip composite plate

Authors： Mao Zhigang Dong Jie Li Ming

Unit： Henan Industrial School Xi′an University of Architecture and Technology Henan Fuhua Iron & Steel Group Co. Ltd.

KeyWords： hot rolling process stainless steel steel chip composite plate mechanical property

ClassificationCode：TG146

year,vol(issue):pagenumber：2021,46(8):239-243

Abstract：

With the stainless steel as the cladding and the 45 steel chips as the base, the stainless steel clad steel chip composite plate was prepared by comprehensively using vacuum heating and hot rolling treatment technology, and different process parameter conditions were designed, and then the composite plates prepared under various process conditions were

tested. The study results show that the length after four passes of hot rolling reaches nearly four times of the original, which forms a layer of steel chip with higher density, and after more than three passes of hot rolling, the shear strength of the composite plate can reach the requirement of 220 MPa or more. Combining with the actual production, the composite plate meeting the strength performance requirements can be prepared in three passes of hot rolling, which significantly reduces the cost of production. Moreover, when the temperature is 1100 ℃, separate inclusion regions are formed, and the state of metallurgical bonding is formed by the layers of stainless steel and steel chip. With the increasing of grain size, the degree of metallurgical bonding between the layers of stainless steel and steel chip is changed, at the same time the plasticity and elongation of the composite plate are reduced. Finally, it is comprehensively determined that 1100 ℃ belongs to the best hot rolling temperature of stainless steel clad steel chip, and the composite plate with the best mechanical properties can be prepared at this temperature, which has a very good practical guiding significance for improving the composite effect of hot rolling for stainless steel clad steel chip.

Funds：

河南省科技攻关项目（162102210016）

毛志刚（1970-），男，学士，高级讲师 E-mail：mani35102097@163.com

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