ZF12高压开关拉杆热挤压工艺

Hot extrusion process of high-voltage switch rod ZF12

在工业生产中,ZF12高压开关拉杆采用棒料直接切屑加工而成,但这种生产工艺存在材料利用率较低、加工效率低、费用高、力学性能难以满足需求等缺点。通过对ZF12高压开关拉杆形状及尺寸的分析,提出了采用两道工序在一套凹模中热挤压成形ZF12高压开关拉杆的新工艺,可以在较小行程的315 t油压机上低成本挤出杆长较长、孔较深的制件,其中成形件的壁厚均匀,内孔和外径的同轴度好。与传统的机加工工艺相比,新工艺提高了材料利用率及生产效率,改善了产品质量。

In industrial production, the high-voltage switch rod ZF12 is made by machine directly, but the issues existed in low material utilization rate, low processing efficiency, high cost, and the difficulty in meeting the needs of the mechanical properties are obstacles in production. Therefore, a hot extrusion process was proposed to form high-voltage switch rod ZF12 by a die with two-procedure based on the analysis of its shape and size. The part with longer and deeper hole was extruded by a 315 t oil press in low cost. The wall thickness of this part was uniform and the eoaxiality of the outer diameter with the inner hole was good. Compared with the traditional machining process, the new technology improved the material utilization rate and product quality.