Behavior of Transversal Crack on Slab Corner During V-H Rolling Process  

作　　者：YU Hai-liang LIU Xiang-hua LI Chang-sheng Y. Kusaba 

机构地区：[1]State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China [2]Sumitomo Metal Industries Ltd, Fuso-cho 660, AMAGASAKI, Japan

出　　处：《Journal of Iron and Steel Research International》2006年第6期31-37,共7页

基　　金：ItemSponsored by State Ministry of Science and Technology of China (G2000067208-4)

摘　　要：The behavior of transversal cracks on the surface of the slab corner during vertical and horizontal （V-H） rolling process with flat vertical roll and groove vertical roll was simulated by explicit dynamic finite element method. The closure and growth of crack and the contact pressure on surfaces of the crack in contacting zone between slab and roll during rolling process were analyzed. The results showed that during vertical rolling process, when the groove vertical roll is used, the maximum contact pressure on surfaces of the crack is 115 MPa, and the closure of crack is stable when the flat vertical roll is used, the maximum contact pressure on surfaces of the crack is 70 MPa, and it fluctuates greatly. During horizontal rolling process, when groove vertical roll is used, the contact pressure becomes zero which may accelerate the growth of crack when flat vertical roll is used, there is still contact pressure. The cal culated results are in good agreement with the results of test.The behavior of transversal cracks on the surface of the slab corner during vertical and horizontal （V-H） rolling process with flat vertical roll and groove vertical roll was simulated by explicit dynamic finite element method. The closure and growth of crack and the contact pressure on surfaces of the crack in contacting zone between slab and roll during rolling process were analyzed. The results showed that during vertical rolling process, when the groove vertical roll is used, the maximum contact pressure on surfaces of the crack is 115 MPa, and the closure of crack is stable when the flat vertical roll is used, the maximum contact pressure on surfaces of the crack is 70 MPa, and it fluctuates greatly. During horizontal rolling process, when groove vertical roll is used, the contact pressure becomes zero which may accelerate the growth of crack when flat vertical roll is used, there is still contact pressure. The cal culated results are in good agreement with the results of test.

关 键 词：SLAB CRACK V-H rolling process FEM 

分 类 号：TF703[冶金工程—钢铁冶金]