WANG Minting
,
ZANG Xinliang
,
LI Xuetong
,
DU Fengshan
钢铁研究学报(英文版)
Using the nonlinear rigidviscoplastic finite element method (FEM), a finite element simulation of the hot strip continuous rolling process was done, which completely integrates different phenomena such as the metallurgical behavior of the strip and the thermomechanics in the strip based on the physical metallurgical microstructural evolution law. By combining with the process parameters of certain 2 050 mm hot strip rolling, an actual rolling process of low carbon steel SS400 was simulated using the FEM model. Based on the simulation results, the distributions of the strain field, the temperature field, and the microstructure were presented. Meanwhile, the simulated rolling force, temperature, and microstructure are in good agreement with the measured results.
关键词:
hot rolling;FEM;microstructure;coupling
WANG Minting
,
LI Xuetong
,
DU Fengshan
钢铁研究学报(英文版)
A simulation model for tworoll cross wedge rolling (CWR) was presented by using threedimensional rigidplastic finite element method (FEM). The whole forming process of CWR, including knifing zone, guiding zone, stretching zone, and sizing zone, was simulated using the model in which dynamic adaptive remeshing technology for tetrahedral solid elements was used to fix element distortion. Based on the simulation results, the distributions of metal flow field, strain field, and damage field, and the geometry of the workpiece′s end were analyzed. These results could provide theoretical guidance for realizing net shaping and reasonable design of tools.
关键词:
cross wedge rolling;finite element method;plastic forming;simulation
LI Xuetong
,
WANG Minting
,
DU Fengshan
钢铁研究学报(英文版)
Using threedimensional rigidviscoplastic finite element method (FEM), a coupling multivariable numerical simulation model for steel plate rolling has been established based on the physical metallurgy microstructural evolution rule and experiential equations. The effects of reduction, deformation temperature, and rolling speed on the deformation parameters and microstructure in plate rolling were investigated using the model. After a typical rolling process of steel plate 16Mn is simulated, the strain, temperature, and microstructure distributions are presented, as well as the ferrite grain transformation during the period of cooling. By comparing the calculated ferrite grain sizes with measured ones, the model is validated.
关键词:
hot rolling;plate;FEM;microstructure;coupling
