Control on Head Displacement of H-Beam in Rolling Process

2014

AMM

Self Cite

Multi-objective genetic algorithms (MOGA) is broadly used in the engineering problem. . Combined the multi-objective genetic algorithms (MOGA) with finite element method (FEM), a new kind engineering optimization method is established. This optimal method takes fully advantage of the unique feature of genetic algorithms that the optimal solution is achieved by a rapid global search and takes advantage of the unique features of FEM that the computation is accuracy. This method can solve multi-objective problems with more complex constraints in the engineering. The procedure is developed by VC++. Temperature difference of H-beam section has great influence on the residual stress of H-beam. In order to reduce the temperature difference of H-beam and make the microstructure of H-beam uniform, the cooling parameters of H-beam after rolling are optimized. The new kind of optimization method MOGA combined with FEM is used to handle this problem. The better optimization result is obtained.

Section: Introductionmentioning

confidence: 99%

Cooling Parameters Optimization of H-Beam after Rolling with MOGA

2014

AMM

Self Cite

“…Web and flange are deformed in different zone and the deformation condition of web is vary from that of flange [1]. It is necessary to research the metal flow law of H-beam [2].…”

Section: Introductionmentioning

confidence: 99%

Study on Metal Flow in the Finish Rolling Process of Large-Sized H-Beam

2014

AMM

Self Cite

According to the production data of a rolling H-beam factory, the FE model of hot continuous rolling process of H-beam is built. With the FEM software of DEFORM-3D, the continuous rolling of H-beam was simulated. On base of simulation result, the metal flow and deformation law are discussed. Because of the flange and web is deformed in the different deformation zone, the metal flow law of flange and web is complex, especially the metal of the conjunction of flange and web. In this paper, the metal flow of large-sized H-beam in finishing rolling process is analyzed.

Controlled Residual Stress Research of H-Beam

et al. 2014

AMR

Because of the residual stress of H-beam after hot rolling, the service performance of H-beam is seriously impacted. it is necessary to reduce the residual stress by controlled rolling and cooling process. In this paper, a continuous rolling model of finish product of H200 x 200 x 8 x 12 is set up. The continuous rolling process of H-beam was simulated using the large finite element software ANSYS/LS-DYNA. The effect of non-uniform elongation of web with flange and section temperature difference on the residual stress are analyzed. Through metallographic observations, the vary microstructure of rolling piece with residual stress and with no residual stress is analyzed. As can be seen from the finite element analysis and the experimental results, reasonable elongation of flange and web and controlling cooling speed to decrease the sectional temperature difference can reduce the residual stress of H-beam.