The invention provides a contact line and a preparation method and application thereof. The preparation method of the contact linee comprises the following steps: drawing an extrusion rod by adoptinga four-pass special-shaped die; and sequentially loading the extrusion rod into a four-die giant drawing machine from large to small according to the dies, and then sequentially penetrating the extrusion rod through the special-shaped die from large to small for drawing to obtain the contact line, wherein the deformation of each pass of mold is 20%-25%, 27%-33%, 27%-32% and 23%-27% in sequence, the first three passes of special-shaped molds are molds with fixed sizes, and the fourth pass of special-shaped mold is a finished product mold. Continuous production can be achieved, the procedures ofdie replacement, head rolling, die penetrating and the like are simplified, the production efficiency is greatly improved, and the labor intensity is reduced; and the size of the special-shaped die can meet the drawing deformation of copper-silver, copper-magnesium and copper-tin contact lines.
本发明提供了一种接触线及其制备方法和应用。该接触线的制备方法包括:采用四道次异形模具对挤压杆进行拉拔:按照模具从大到小依次装入四模巨拉机中,然后将挤压杆依次穿过由大到小的异形模具进行拉拨获得接触线;各道次模具的变形量依次为20%~25%、27%~33%、27%~32%和23%~27%;前三道次异形模具为固定尺寸的模具,第四道次异形模具为成品模具。本发明能实现连续化生产,简化了更换模具、轧头、穿模等工序,大大提高了生产效率,降低了劳动强度;并且该异形模具尺寸能够满足铜银、铜镁、铜锡接触线进行拉拔变形。
Contact line and preparation method and application thereof
一种接触线及其制备方法和应用
2020-04-10
Patent
Electronic Resource
Chinese
Ceramic reinforced contact line and preparation method thereof
European Patent Office | 2024
|Dynamic measurement device for subway contact line and use method thereof
European Patent Office | 2022
|Non-edge-covering carbon contact strip and preparation method thereof
European Patent Office | 2024
|