Production method of pure copper stranded wire

A production method, pure copper technology, applied in the direction of cable/conductor manufacturing, furnace type, furnace, etc., can solve the problems of high raw material copper content, low resource utilization rate, high production cost, etc., to achieve high output, high resource utilization rate, The effect of low production cost

Inactive Publication Date: 2016-04-20
赣州江钨拉法格高铁铜材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a production method of pure copper stranded wire, which overcomes the shortcomings of high production cost, high copper content of raw materials, low resource utilization rate and low output of pure copper wire produced by traditional continuous casting process

Method used

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  • Production method of pure copper stranded wire

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with specific embodiment:

[0012] A production method of pure copper stranded wire, comprising the following steps:

[0013] 1. Add scrap copper with a copper content >92% (weight percentage) into the rotary furnace, heat and melt it to a copper liquid at 1150-1200°C, and then oxidize and refine it into a copper liquid with a copper content >99.90% (weight percentage), The copper liquid flows into the cavity of the casting wheel through the launder and the tundish to cool and crystallize to form a billet, and the casting wheel is cooled by cooling water;

[0014] 2. The billet is hot-rolled into a pure copper rod by a two-roll rolling mill, cooled and pickled by an isopropanol solution, and then formed into a whole coil of pure copper rod by a wire take-up machine;

[0015] 3. Use wire drawing machines of different specifications to draw copper rods for multiple passes to make pure copper monofilamen...

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Abstract

The invention relates to a production method of a pure copper stranded wire. The method comprises the following steps of melting and refining, hot rolling, cooling, pickling, taking-up, wire drawing and wire stranding. After welding, refining and hot rolling processes are conducted on scrap copper, horizontal rolling and vertical rolling are conducted alternatively on a copper rod by adopting rollers of rough rolling and finish rolling with larger rolling reduction in the hot rolling process, and a tiny and even metallographic structure is formed inside the copper rod. In the drawing process, by means of friction calendaring between the copper rod and a mold, the strength of pure copper is improved through cold hardening. All performance indexes of a produced pure copper load-bearing rope can meet standard requirements; compared with a traditional technology, the production method of the pure copper stranded wire has the advantages that the yield is high, the resource utilization rate is high, energy conservation and environmental protection are achieved, and the production cost is low.

Description

technical field [0001] The invention relates to a production method of a pure copper stranded wire used as a current-carrying alloy catenary cable of an electrified railway catenary. Background technique [0002] The current-carrying pure copper catenary cable is the main equipment in the electrified railway catenary, which plays the role of suspension of the transmission wire of the electric locomotive and the compensation of the current-carrying role. With the increasing demand for railway transportation in my country, the demand for current-carrying pure copper catenary cables is increasing. However, the pure copper produced by the traditional continuous casting process has low output and high production costs. Frequent shutdown and start-up of the furnace reduces the life of the bottom of the furnace. The raw material must be cathode copper, and the copper content must reach >99.9935% by weight, resulting in raw material procurement costs. High, unable to meet the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/04B21F7/00H01B13/02C22B15/14C22B15/00
CPCB21C37/04B21F7/00C22B15/0034H01B13/02
Inventor 张光伟官珊丹朱峰
Owner 赣州江钨拉法格高铁铜材有限公司
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