Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing oxygen-free copper rod

An oxygen-free copper rod and copper liquid technology, applied in the direction of improving process efficiency, etc., can solve environmental pollution, wood consumption and other problems, and achieve the effect of reducing oxygen content and high purity

Inactive Publication Date: 2018-11-16
安徽润藤电缆材料科技有限公司
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional production method of oxygen-free copper rods uses charcoal to prevent oxidation during smelting, which consumes a lot of wood and pollutes the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] A preparation method of an oxygen-free copper rod, the method comprises the following steps:

[0018] (1) First put the electrolytic copper raw materials into the holding furnace for 3-5 hours, vacuumize the smelting furnace, raise the furnace temperature to 1240-1300 ℃, and then pump the electrolytic copper raw materials into the smelting furnace for smelting , During the smelting process, high-purity nitrogen is continuously charged into the smelting furnace, and at the same time, the smelting furnace is connec...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing an oxygen-free copper rod, and relates to a method for preparing a copper rod, the method for preparing the oxygen-free copper rod mainly comprises the following steps: first baking an electrolytic copper raw material into a holding furnace for 3 to 5 hours, pumping a melting furnace to vacuum, heating the melting furnace to 1240 ~ 1300DEG C, then pumping the electrolytic copper raw material into the melting furnace for melting to obtain a copper liquid; introducing the copper liquid into the holding furnace, and adding the copper liquid into a filter plate by a flow groove between the holding furnace and the melting furnace; directly inserting a hollow crystallizer into the copper liquid, cooling the hollow crystallizer by a water spacer, condensing the copper liquid into a solid in the hollow crystallizer, and drawing the upper end of the solid by a drafting mechanism into a rod blank; performing multi-pass drawing on the rod blank at the temperature below the recrystallizatione temperature of the billet rod blank, and performing intermediate annealing between different passes of drawing to obtain the oxygen-free copper rod with a predetermined diameter. The method for preparing the oxygen-free copper rod no longer uses charcoal to prevent oxidation, and can provide the oxygen-free copper rod with a low oxygen content.

Description

technical field [0001] The invention relates to a preparation method of a copper rod, in particular to a preparation method of an oxygen-free copper rod. Background technique [0002] Oxygen-free copper is widely used in semiconductor bonding wires, high-fidelity audio cables, sputtering targets and other manufacturing fields due to its good electrical conductivity, thermal conductivity and corrosion resistance, and has extremely high economic value and strategic significance. With the continuous improvement of industrial technology, the international and domestic requirements for oxygen-free copper rods are constantly improving, especially the oxygen content requirements for oxygen-free copper rods. The oxygen content of the copper rod produced by the existing continuous casting and rolling is about 200 ppm, and the electrical conductivity is less than 0.0600; the oxygen content of the copper rod produced by the upward drawing method is 50-100 ppm. The oxygen content of th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22B15/14C22B9/04C22B9/05C22B9/02B22D11/14B22D11/119
CPCB22D11/004B22D11/119B22D11/145C22B9/006C22B9/02C22B9/04C22B9/05C22B15/006Y02P10/20
Inventor 夏江平吴万松
Owner 安徽润藤电缆材料科技有限公司