进给参数对旋锻连接强度的影响研究

Study on the Influence of Feed Parameters on the Strength of Rotary Forging Connections

摘要: 以铜铝管旋锻连接为对象，用理论结合仿真研究进给参数对旋锻连接强度的影响。理论研究结果表明，径向进给参数通过影响塑性变形的程度进而影响最终的连接强度，周向进给参数通过影响管件的侧面接触面积来影响连接强度；仿真结果表明在一定范围内连接强度随着径向进给量的增加而上升，当径向进给量为0.8 mm时，连接强度达到最大，最大拉伸载荷为3200 N，当径向进给量超过0.8 mm后，管件会因为产生裂缝、折叠等缺陷使得连接强度降低；周向进给参数通过影响铜铝管圆度质量进而影响连接强度，径向进给参数一定时，连接强度随着周向进给次数的增加而提高，当周向进给次数为5时，连接强度达到最大，最大拉伸载荷为3550 N；周向进给次数应在保证连接强度的前提下尽量减少。

Abstract: The study focuses on the spin-forming connection of copper and aluminum tubes, examining the impact of feed parameters on connection strength through a combination of theoretical analysis and simulation. Theoretical research revealed that radial feed parameters influence the degree of plastic deformation, thereby affecting the ultimate connection strength, while circumferential feed parameters impact connection strength by influencing the lateral contact area of the tube components. Simulation results indicated that within a certain range, connection strength increases with the radial feed amount. The maximum connection strength, achieved at a radial feed of 0.8 mm, corresponds to a maximum tensile load of 3200 N. Beyond this point, excessive radial feed (exceeding 0.8 mm) leads to defects such as cracks and folds in the tubes, reducing connection strength. Circumferential feed parameters affect connection strength by influencing the roundness quality of the copper and aluminum tubes. With a constant radial feed parameter, connection strength improves as the number of circumferential feeds increases, peaking at five feeds with a maximum tensile load of 3550 N. Therefore, the number of circumferential feeds should be minimized while ensuring sufficient connection strength.