screw rolling

The model and computer software for simulating spiral deformation zone of seamless tube cross rolling elongation have been established and developed.

建立了钢管斜轧延伸螺旋轧制变形区模型，开发出螺旋轧制变形区计算机模拟软件；提出了螺旋轧制变形区由４个小区组成、整个斜轧延伸变形过程是一个“异步连轧”过程的新概念；通过分析秒流量，揭示了管壁增厚机制。

Intorduced to develop hot rolled left screw bar ofΦ18、Φ20、Φ22that was needed by buyer.

介绍了在轧钢厂二车间开发顾客需要的Φ18、Φ20、Φ22的热轧左旋螺纹钢。

Understanding the ono-column volume change due to reduction is a key factor to avoid central porosity cracks, improve the dimensional precision, and promote the application of skew rolling.

螺旋孔型斜轧是一种轴类零件成形新工艺 ,具有效率高、质量好、材料利用率高等优点。

Through the study of the process of skew rolling step-axis with the help of FEM software ANSYS-DYNA, the stress on the middle section of the workpiece and the infection of ridge slope to the stress in the center is known.

应用ＡＮＳＹＳ－ＤＹＮＡ有限元软件，对螺旋孔型斜轧轴类件进行轧制过程的模拟，得到轧件中间横截面的上应力分布曲线，同时分析了凸棱斜率对轧件中心部位应力变化的影响规律。