论文部分内容阅读
Cu-Cr-Zr合金具有优良的综合性能,Cu-Cr-Zr合金接触线强度高,需要多道次拉拔成形,为了制订合理的模具结构及拉拔工艺参数,采用有限元方法,对截面积为110 mm2的接触导线拉拔过程进行了数值模拟。研究了拉拔模模角、定径带长度等模具结构参数和拉拔速度、摩擦因子等拉拔工艺参数对接触线成形过程的影响,得到了优化的拉拔模结构参数和拉拔工艺参数,为实际生产提供了模具及工艺参数设计依据。对于本研究开发的Cu-Cr-Zr合金,其强度保持在σb>600 MPa的同时,导电率依然维持在80%IACS以上,适合于制做时速350 km.h-1以上的高速铁路接触导线。
Cu-Cr-Zr alloy has excellent overall performance, Cu-Cr-Zr alloy contact line strength is high, need multi-pass drawing forming, in order to develop a reasonable mold structure and drawing process parameters, using finite element method, the cut The drawing process of the contact wire with an area of 110 mm2 was numerically simulated. The effects of mold structure parameters such as drawing dies, length of sizing belt and drawing process parameters such as drawing speed and friction factor on the forming process of contact lines were studied. The optimal drawing parameters and drawing parameters , For the actual production of molds and process parameters based on the design. For the Cu-Cr-Zr alloy developed in this study, the strength of the Cu-Cr-Zr alloy is maintained at σb> 600 MPa while the electrical conductivity remains above 80% IACS, making it suitable for high speed railway contact wires .