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High-purity high-conductivity oxygen-free copper rod and processing method thereof

The technology of an oxygen-free copper rod and a processing method is applied in the field of electrical copper, which can solve the problems of harsh preparation process conditions, high requirements on raw materials, consumption of pine wood, etc. Effect

Inactive Publication Date: 2016-12-07
安徽晋源铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The oxygen content of copper rods produced by the existing up-drawing method is generally between 50-100PPM, but the conditions of its preparation process are harsh, there are high requirements for raw materials, and the effect of oxygen removal and oxygen isolation is not good. The process of wood restoration consumes a lot of pine wood and causes a series of defects such as pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The processing method of a high-purity and high-conductivity oxygen-free copper rod proposed by the present invention includes the following steps:

[0023] S1. Add the copper material into the smelting furnace, first raise the furnace temperature to 1300°C at a heating rate of 3°C / min, keep the temperature until the copper material is melted, then cool down to 1190°C, keep the temperature for 60 minutes to form copper liquid, first add the low-sulfur coke After the first refining, the slag is removed, and the weight ratio of low-sulfur coke and copper material is 2:1000. Then quartz is added to remove the slag after the second refining. The weight ratio of quartz and copper material is 2:1000. Finally, Add lime to carry out slag removal after the third refining, the weight ratio of lime and copper material is 1:1000, and then add oxygen scavenger in batches, and the weight ratio of described oxygen scavenger and copper material is 0.006:100, so Described oxygen scaveng...

Embodiment 2

[0027] The processing method of a high-purity and high-conductivity oxygen-free copper rod proposed by the present invention includes the following steps:

[0028] S1. Add the copper material into the smelting furnace, first raise the furnace temperature to 1280°C at a heating rate of 6°C / min, keep the temperature until the copper material is melted, then cool down to 1210°C, keep the temperature for 30 minutes to form copper liquid, first add low-sulfur coke After the first refining, the slag is removed, and the weight ratio of low-sulfur coke and copper material is 2.5:1000, and then boron oxide is added to remove the slag after the second refining, and the weight ratio of boron oxide and copper material is 1.5:1000 , finally add lime to carry out slag removal after the third refining, the weight ratio of lime and copper material is 1.5:1000, and then add oxygen scavenger in batches, and the weight ratio of described oxygen scavenger and copper material is 0.001:100 , the ox...

Embodiment 3

[0032] The processing method of a high-purity and high-conductivity oxygen-free copper rod proposed by the present invention includes the following steps:

[0033]S1. Add the copper material into the smelting furnace, first raise the furnace temperature to 1290°C at a heating rate of 4°C / min, keep the temperature until the copper material is melted, then cool down to 1200°C and keep the temperature for 45 minutes to form copper liquid, first add low-sulfur coke After the first refining, the slag is removed, and the weight ratio of low-sulfur coke and copper material is 2.2:1000. After adding phosphorous copper for the second refining, the weight ratio of phosphorus copper and copper material is 1.7:1000. , finally adding lime to carry out the slag removal after the third refining, the weight ratio of lime and copper material is 1.2:1000, adding oxygen scavenger in batches, and the weight ratio of described oxygen scavenger and copper material is 0.003:100, The oxygen scavenger...

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Abstract

The invention discloses a processing method of a high-purity high-conductivity oxygen-free copper rod. The processing method comprises the following steps of S1 melting a copper material so as to form copper liquid, refining so as to remove impurities, and then adding deoxidant in batches, wherein the deoxidant is prepared from the following components in parts by weight: 40 to 45 parts of lanthanum, 20 to 25 parts of cerium, 5 to 10 parts of praseodymium, 15 to 30 parts of calcium hexaboride and 15 to 30 parts of lithium oxide; S2 leading the copper liquid in a smelting furnace to a holding furnace, controlling the temperature of the holding furnace to 1150 to 1160 DEG C, and covering an oxygen insulation layer on the surface of the copper liquid in the holding furnace; and S3 leading high-purity nitrogen below the liquid level of the copper liquid in the holding furnace for boiling degassing, and then adopting up-drawn continuous casting so as to obtain the high-purity high-conductivity oxygen-free copper rod. According to the processing method of the high-purity high-conductivity oxygen-free copper rod, the oxygen content of the high-purity high-conductivity oxygen-free copper rod is less than or equal to 20 PPM, the conductivity of the high-purity high-conductivity oxygen-free copper rod is greater than or equal to 0.064, and the whole process has the advantages of simple conditions, wide application range and less pollution.

Description

technical field [0001] The invention relates to the technical field of copper used in electrical engineering, in particular to a high-purity and high-conductivity oxygen-free copper rod and a processing method thereof. Background technique [0002] Oxygen-free copper (generally copper products with an oxygen content below 20PPM) is widely used in the production and manufacture of electronic, electrical and electrical devices due to its good electrical and thermal conductivity. Oxygen-free copper materials are used in high-frequency launch tubes, transition tubes, magnetrons, vacuum switch tubes and other products of electric vacuum devices. Since electric vacuum devices are sealed in hydrogen during the manufacturing process, there are strict regulations on the control of the oxygen content in copper. With the continuous improvement of industrial technology, the international and domestic requirements for oxygen-free copper rods continue to increase, especially the oxygen c...

Claims

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Application Information

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IPC IPC(8): B22D11/14C22C1/06
CPCB22D11/145B22D11/004C22C1/06
Inventor 潘加明
Owner 安徽晋源铜业有限公司
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