Chang-sheng Li

Analysis of Strip Temperature in Hot Rolling Process by Finite Element Method

The program was developed by finite element method to calculate the temperature distribution in hot strip rolling process. The heat transfer coefficients of air cooling. water cooling and thermal resistance between work roll and strip were analyzed. A new heat generation rate model was proposed according to the influence of source current density. work frequency. air gap and distance to edge on induction heating by finite element method (FEM). The heat generation rate was considered in the thermal analysis to predict the temperature distribution in the induction heating. The influence of induction heating on the strip temperature was investigated for different slab thicknesses. The temperature difference became more and more obvious with the increase of thickness. The strip could be heated quickly by the induction heating both in surface and center because of the thermal conductivity and skin effect. The heat loss of radiation has important influence on the surface temperature. The surface temperature could be heated quickly by high frequency when the strip is thicker.

Texture of Hot Rolled Strip for Fe-3Si Steel Produced by Thin Slab Casting and Rolling

Fe-3Si steel strip was produced by thin slab casting and rolling (TSCR) process in the laboratory. The microstructure and texture of hot rolled strip by different total reduction and rolling schedules were observed through EBSD technique and X-ray diffraction method. The rule of texture density for the α, ε and γ fibers was analyzed. When the total reduction was increased from 82. 9% to 97. 1%, the gradient of microstructure and texture for A steel surface layer and center layer was found,

Deformation Behavior of Fe-36Ni Steel during Cryogenic (123–173 K) Rolling

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Thermal Scratch on Surface of SUS430 Stainless Steel Strip in Cold Rolling Process

{001}<11¯0> texture had higher intensity, and

Prediction of initial velocity field for fast solution of rolling force by FEM in strip rolling

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Effects of Heat Treatment Process Parameters on Microstructure and Mechanical Properties of DP440 Cold Rolled Strip

{001}<11¯0> texture was changed to {110}>001< and {112} <111>. The texture distribution with different reduction schedules for B steel was basically similar, but the Goss texture orientation density and volume fraction for B steel were higher, the hot rolling reduction schedule of C1 was effective for the formation of Goss texture. The research work was useful theoretical basis and reference data to develop electrical steel by thin slab continuous casting and direct rolling technology.