Process for producing anaerobic copper billets in upward continuous casting method

A technology of oxygen-free copper and continuous casting, which is applied in the field of producing oxygen-free copper slabs by upward continuous casting, which can solve the problems of production efficiency, low yield, difficulty in controlling the oxygen content of slabs, and low pass rate of slabs , to achieve the effects of improving production efficiency, saving copper resources and reducing production costs

Inactive Publication Date: 2013-03-27
富威科技(吴江)有限公司
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Problems solved by technology

[0004] The traditional oxygen-free copper production process mainly adopts semi-continuous casting and horizontal continuous casting process, the oxygen content in the obtained slab is difficult to control, and the qua

Method used

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specific Embodiment 1

[0026] In this embodiment, the smelting and heat preservation process is performed in a conjoined double-melting ditch power frequency induction furnace. The lower part of the wall is provided with a plurality of underflow holes, which make the inner cavity of the holding furnace communicate with the inner cavity of the smelting furnace.

[0027] The production technology of this oxygen-free copper slab comprises the following steps in the present embodiment:

[0028] Step 1. Use high-purity cathode electrolytic copper with a purity ≥ 99.98% as raw materials, put the above raw materials into the melting furnace, and put high-quality charcoal as the first covering agent to prevent oxygen in the air from entering the raw materials. The thickness of high-quality charcoal is controlled at 15-30cm, keep the smelting temperature in the smelting furnace controlled at 1160-1200°C, the raw materials are smelted in the smelting furnace to obtain molten copper;

[0029] Step 2, ...

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Abstract

The invention discloses a process for producing anaerobic copper billets in an upward continuous casting method and overcomes difficulties in liquid copper fluidity, electrical property and density.Oxygen content of the anaerobic copper billets produced through the process is not higher than 5ppm, direct-current resistance of the anaerobic copper billets at 20 DEG C is smaller than or equal to 0.017593/ ohm mm<2>/m, the anaerobic copper billets are compact in texture and few in oxide skin and can be directly used in cold rolling production without surface milling, and a large quantity of copper resources are saved. By adopting the process to produce the anaerobic copper billets, ultra-wide anaerobic copper billets can be obtained, and the width of the anaerobic copper billets can be above 20. The process greatly improves yield of the anaerobic copper billets, reduces production cost and improves production efficiency.

Description

[0001] technical field [0002] The invention relates to a process for producing oxygen-free copper slabs by an upward continuous casting method, in particular to a casting process for producing oxygen-free copper with high density and large width by the upward continuous casting method. [0003] Background technique [0004] The traditional oxygen-free copper production process mainly adopts semi-continuous casting and horizontal continuous casting process. The oxygen content in the slab obtained is not easy to control, and the qualified rate of the slab produced is low. The slab produced by the above process needs to be milled later. The finished product can only be obtained through surface and multi-pass rolling, the material waste rate is high, and the production efficiency and yield are low. [0005] Contents of the invention [0006] The purpose of the present invention is to provide a process for producing oxygen-free copper slabs by upward continuous casting, th...

Claims

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Application Information

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IPC IPC(8): B22D11/14
Inventor 朱荣华张荣明苏平殷明亮
Owner 富威科技(吴江)有限公司
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