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Production process for low-oxygen copper bars

A production process and low-oxygen copper technology, applied in the field of production process of low-oxygen copper rods, can solve problems such as inability to meet demand

Inactive Publication Date: 2018-10-19
安徽润藤电缆材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the oxygen-free copper rods commonly used in the cable industry are actually low-oxygen copper rods. The oxygen content is mostly around 15ppm, and the density is far lower than the theoretical density of copper of 8.96 grams per cubic centimeter, which cannot meet the needs of ultra-fine wires, double zero wires, etc. special occasion needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of production technology of low-oxygen copper rod is characterized in that, comprises the steps:

[0023] (1) Put the copper material in a reflective melting furnace for melting and refining. The refining process includes adding coke for the first refining and removing slag, and then adding lime for the second refining and removing the slag. During the refining process, the copper liquid needs to be removed Perform blasting with a blast pressure of 0.38MPa;

[0024] (2) adding purification flux to the copper liquid obtained in step (1), then the copper liquid is transported to the holding furnace full of nitrogen, and the holding furnace is heated, and one layer of graphite flakes is covered on the surface of the copper liquid, It is used to isolate hydrogen and oxygen in the air, and after online degassing, deoxidation, and stirring, the hollow crystallizer is directly lifted into the copper liquid. The hollow crystallizer is cooled by a water jacket, and the co...

Embodiment 2

[0034] A kind of production technology of low-oxygen copper rod is characterized in that, comprises the steps:

[0035] (1) Put the copper material in a reflective melting furnace for melting and refining. The refining process includes adding coke for the first refining and removing slag, and then adding lime for the second refining and removing the slag. During the refining process, the copper liquid needs to be removed Perform blasting with a blast pressure of 0.38MPa;

[0036] (2) adding purification flux to the copper liquid obtained in step (1), then the copper liquid is transported to the holding furnace full of nitrogen, and the holding furnace is heated, and one layer of graphite flakes is covered on the surface of the copper liquid, It is used to isolate hydrogen and oxygen in the air, and after online degassing, deoxidation, and stirring, the hollow crystallizer is directly lifted into the copper liquid. The hollow crystallizer is cooled by a water jacket, and the co...

Embodiment 3

[0046] A kind of production technology of low-oxygen copper rod is characterized in that, comprises the steps:

[0047] (1) Put the copper material in a reflective melting furnace for melting and refining. The refining process includes adding coke for the first refining and removing slag, and then adding lime for the second refining and removing the slag. During the refining process, the copper liquid needs to be removed Perform blasting with a blast pressure of 0.38MPa;

[0048] (2) adding purification flux to the copper liquid obtained in step (1), then the copper liquid is transported to the holding furnace full of nitrogen, and the holding furnace is heated, and one layer of graphite flakes is covered on the surface of the copper liquid, It is used to isolate hydrogen and oxygen in the air, and after online degassing, deoxidation, and stirring, the hollow crystallizer is directly lifted into the copper liquid. The hollow crystallizer is cooled by a water jacket, and the co...

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Abstract

The invention discloses a production process for low-oxygen copper bars. The production process comprises the following steps of: (1) refining copper liquid; (2) adding a purification flux into the copper liquid obtained in the step (1), and conveying the copper liquid into a holding furnace which is full of nitrogen; (3) straightening a low-oxygen copper bar; (4) continuously extruding the copperbar; (5) after the extrusion, cooling and drying the low-oxygen copper bar through a vacuum antioxidant tube and a cooling trough; and (6) rapidly and uniformly coating wax on the surface of the copper bar, and packaging the copper bar to obtain a high-density oxygen-free copper bar. The production process for low-oxygen copper bars has two effects of impurity removal and gas removal, so that thepurity of copper is increased, the purity of copper materials is improved, the oxygen content of the copper materials is greatly reduced, and the electric conductivity is high.

Description

technical field [0001] The invention relates to a processing technology for copper rods, in particular to a production technology for low-oxygen copper rods. Background technique [0002] With the development of science and technology, the wire and cable industry has higher and higher quality requirements for electrical copper rods, and oxygen-free copper rods have good electrical conductivity, ductility, air tightness and low tendency to hydrogen embrittlement. The industry has been widely favored. Among them, the purification treatment of copper melt is the key to improving the quality of oxygen-free copper rods. Many scholars at home and abroad have done a lot of research on the purification technology and process of the melt, and have made some progress. [0003] At present, the oxygen-free copper rods commonly used in the cable industry are actually low-oxygen copper rods. The oxygen content is mostly around 15ppm, and the density is far lower than the theoretical dens...

Claims

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Application Information

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IPC IPC(8): C22B15/14C22B15/04B21C37/04
CPCC22B15/006B21C37/04C22B15/0036
Inventor 夏江平吴万松
Owner 安徽润藤电缆材料科技有限公司
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