A New Technique for Recycling Iron Scraps

• 1、National Engineering Research Center For Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004

Abstract：Among the various steps of iron production from liquid metal, a lot of scrap is generated due to the machining operations. Therefore, recycling of iron scraps is an interesting subject because of the broad applications of this metal and low efficiency of processes used to recycle metal scrap. In this paper, a new solid-state technique for recycling iron scraps with low air pollution and less steps without intervening re-melting phase was introdueced. Iron scraps were recycled directly through the production of stainless steel/iron scraps clad plate by cold pressing followed by hot rolling, the performance of the clad plate were measured by metallographic observation, shearing test and bending test. The results show that the interface between the two metals is closely bonded without voids and crack, the shear strength is higher than the national standard, bending results show that the two metal combined closely under the condition of large deformation and the clad plate displays good plasticity. In addition, the new technique provides low energy consumption and less new scraps as compared with conventional methods.

Keywords： Steel metallurgy iron scraps solid-state recycling cold press hot rolling stainless steel clad plate