锻压技术

管材斜连轧过程的运动学分析及实验研究

英文标题：Kinematic analysis and experiment research on tandem skew rolling process for tube

单位：运城学院太原科技大学

分类号：TG335.71

出版年,卷(期):页码：2021,46(4):215-222

摘要：

介绍了生产无缝管材的斜连轧工艺的变形过程。以建立了连续斜轧关系后受穿孔段轧辊及轧管段轧辊共同作用的管材为研究对象，采用理论分析方法，建立了轧辊与管材间的运动学关系，获得了满足变形协调关系的穿孔段出口与轧管段入口间管材的速度方程。在斜连轧实验机组上进行了实验研究，采用单一变量控制法，分析了轧管段轧辊转速对斜连轧过程及轧后管材质量的影响。实验结果表明：当穿孔段工艺参数不变时，轧管段轧辊转速对能否顺利完成连续斜轧轧制的影响较大；当转速为174 r·min-1时，由于轴向和周向的速度协调，可实现顺利轧制；当转速为168 r·min-1时，由于轴向速度不协调，出现堆钢现象；当转速为182 r·min-1时，由于周向速度不协调，出现扭转现象。

The deformation process of seamless tube in tandem skew rolling (TSR) process was introduced. For the tube under the combined actions of rollers in piercing and rolling sections after the tandem skew rolling relationship was established, the kinematic relationships between rollers and tube were constructed by theoretical analysis method, and the velocity equations of tube between the exit of piercing section and the import of rolling section were obtained, which could satisfy the law of deformation compatibility. Then, the experiments were investigated in the mill of TSR, and the influences of roller speed for rolling section on the process of tandem skew rolling and the quality of rolled tubes were analyzed by adopting single variable control method. The experimental results show that when the process parameters of piercing section are unchanged, the roller speed of rolling section has great influence on the completion of tandem skew rolling successfully. When the roller speed is 174 r·min-1, the rolled tube is obtained due to the compatibility of axial and circumferential velocities. When the roller speed is 168 r·min-1, the phenomenon of pile-up steel occurs due to the incompatibility of axial velocities. When the roller speed is 182 r·min-1, the torsion phenomenon occurs due to the incompatibility of circumferential velocity.

基金项目：

山西省高等学校科技创新项目资助（2019L0852）；山西省科技重大专项项目（20191102009）；优秀博士来晋科研专项（QZX-2019009）

王付杰（1975-），男，博士，副教授 E-mail：yonghuikeji@126.com

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