四线切分轧制的数值模拟

 切分轧制是采用特殊的孔型和导卫系统，利用金属的不均匀变形将轧件沿纵向切分成2根或2根以上独立分支的新工艺。采用有限元软件Deform 6.1模拟出应用四线切分轧制工艺生产直径为14mm螺纹钢筋的预切分道次和切分道次的轧制过程，计算出相应特殊孔型下的轧制力，并且将用有限元方法计算的结果与现场实测相比较，两者相差10%左右，满足生产实际要求。模拟仿真了轧件在四线切分导卫中的切分过程，得出2对切分轮的各方向受力曲线。

Numerical Simulation of 4-Strands Slit Rolling Process

The slit rolling is one of new processes, which make use of uneven deformation of metal along rolling direction to make one workpiece cut into two or more independent branches through using special system of shape of passes and guides. The finite element software Deform 6.1 was used to simulate the rolling process of 4-strands slit rolling, based on the productive condition of 14mm ribbed bar. The force of pre-slitting pass and slitting pass were calculated. The deviation of roll force from measured value in pre-slitting pass was 10%. The segmenting process of the workpiece passing through the separating guide was simulated, and the force curve of split round in all directions was obtained.