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采用有限元软件DEFORM-3D模拟了连轧驱动等通道转角大应变技术,研究了大轧制压下对大应变技术的影响。结果表明,当摩擦系数低(0.12)时,工件与轧制轮之间出现打滑现象,在转角变形区出现沿弯曲通道向上位置的镦宽现象;在摩擦系数过高(0.5～0.7)时,进入弯曲通道,出现明显的轧宽现象,在出口通道处,工件出现破损现象;在摩擦系数适中(0.3)时,工件变形流畅,工件在出口通道内未填满通道宽度。随着轧制压下率增大,有效应变增大,但能耗增加。
The finite element software DEFORM-3D was used to simulate the large-angle cornering technique of continuous rolling drive. The effect of large rolling reduction on large strain was also studied. The results show that when the friction coefficient is low (0.12), the slippage occurs between the workpiece and the rolling wheel, and the upsetting phenomenon occurs along the curved passage in the corner deformation zone. When the friction coefficient is too high (0.5-0.7) When the friction coefficient is moderate (0.3), the deformation of the workpiece is fluent and the workpiece does not fill the channel width in the exit passage. As the rolling reduction increases, the effective strain increases, but the energy consumption increases.