Copper belt production technology using upper continuous casting process

A production process and technology of red copper strip, applied in the field of non-ferrous metal casting, can solve the problems of inability to overcome the poor fluidity of copper water, unable to meet the high density and high resistivity of red copper strip, lack of copper water, etc., to achieve less oxide scale and improve finished products. efficiency, and the effect of saving copper resources

Inactive Publication Date: 2009-07-29
江苏富威科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, it is a mature process to produce copper rods by upward drawing method and copper strip by horizontal continuous casting method. For copper tape castings used to produce RF (radio frequency) cable tape
The main reason is that the poor fluidity of copper water in the casting process cannot be overcome, and the lack of suitable parameters to control the liquid level height of copper water and the temperature of copper water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A), adopt the raw material copper of purity ≥ 99.95%, put above-mentioned raw material into melting furnace and melt to obtain molten copper water;

[0019] B), add 0.01kg phosphorus and 0.008kg rare earth in every 1000kg copper water, mix described phosphorus and rare earth in copper water; Add phosphorus in copper water and can increase the fluidity of copper water, and add rare earth element mainly for Improve the electrical conductivity and mechanical properties of castings. Because rare earth elements have high chemical activity, they are easy to combine with hydrogen, oxygen, sulfur and some impurities during the smelting process to form high melting point compounds and enter the slag phase, so it can play a role in detoxification. The functions of hydrogen, deoxidation, desulfurization and impurity removal can improve the purity of castings.

[0020] C) Casting is carried out using the upward continuous casting method. During the casting process, the temperature ...

Embodiment 2

[0027] Give another example to illustrate, adopt the following weight ratio to carry out the process of leading up continuous casting to obtain the red copper strip,

[0028] A), adopt the raw material copper of purity ≥ 99.95%, put above-mentioned raw material into melting furnace and melt to obtain molten copper water;

[0029] B), adding 0.008kg phosphorus and 0.01kg rare earth in every 1000kg copper water, described phosphorus and rare earth are mixed homogeneously in copper water;

[0030] C) Casting is carried out by the upward continuous casting method. During the casting process, the temperature of the copper water is controlled at 1160±5°C, and the liquid level of the copper water is 80mm higher than the protective cover.

[0031] D), annealing the red copper strip obtained by casting;

[0032] E), the annealed red copper strip is rolled to obtain a resistivity of 0.0017201Ω·mm 2 / m, oxygen content≤5ppm, density≥8.93mm 3 The copper strip, the impurities (%) content...

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Abstract

The invention relates to a production process for producing copper strips by an upward continuous casting method, which comprises the following steps: adopting copper with a purity of more than or equal to 99.95 percent as a raw material, throwing the raw material into a melting furnace for melting, and obtaining molten copper in the fused state; adding phosphor and rare earth into the molten copper in the fused state according to the proportion of addition of 0.008 to 0.04 kilogram of the phosphor and 0.005 to 0.01 kilogram of the rare earth into each 1,000 kilograms of the molten copper, and uniformly mixing the phosphor and the rare earth in the molten copper; and adopting the upward continuous casting method for casting, and guaranteeing that the temperature of the molten copper is controlled to be between 1,150 and 1,200 DEG C and the liquid level of the molten copper is 50 to 100 millimeters higher than that of a protective sleeve during casting. The production process casts the copper strips with low oxygen content, high resistivity, large density and good quality by adding the phosphor and the rare earth with proper proportion into the molten copper during upward casting.

Description

technical field [0001] The invention belongs to the field of non-ferrous metal casting, and in particular relates to a casting process for manufacturing high-density and wide-width red copper strips by using an upward continuous casting method. Background technique [0002] The upward continuous casting method is to make the liquid metal crystallize and form in the crystallizer through the crystallizer, and draw out the cast slab of the required specification. In China, it is a mature process to produce copper rods by upward drawing method and copper strip by horizontal continuous casting method. For copper tape castings used to produce RF (radio frequency) cable tapes. The main reason is that the problem of poor fluidity of copper water in the casting process cannot be overcome, and the lack of suitable parameters to control the liquid level height and temperature of copper water. Contents of the invention [0003] The object of the present invention is to provide a pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/14
Inventor 孙建新
Owner 江苏富威科技股份有限公司
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