Method for producing solid special conductive copper bar used for copper electrolysis

A production method, copper electrolysis technology, applied in the direction of metal rolling, etc., can solve the problems of loose and dense internal structure, coarse grains of cast structure, etc., achieve shortened hot rolling time, small metal loss, and low hot rolling cost Effect

Active Publication Date: 2014-01-15
白银有色西北铜加工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a production method of solid-core special-shaped conductive copper bars for copper electrolysis, to solve the problem of processing solid-core special-shaped conductive copper with horizontal continuous casting slabs Defects such as coarse grains of cast structure and low density of internal structure

Method used

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  • Method for producing solid special conductive copper bar used for copper electrolysis
  • Method for producing solid special conductive copper bar used for copper electrolysis
  • Method for producing solid special conductive copper bar used for copper electrolysis

Examples

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Embodiment 1

[0055] 1.) Semi-continuous casting:

[0056] High-purity cathode copper is selected as the raw material, and then melted in a core power frequency induction furnace, the copper liquid surface is covered with calcined charcoal, the furnace temperature is 1160oC, and the casting temperature is 1160oC. The surface of the mold is sealed and cast under the protection of gas. The casting speed is 4m / h, and the cooling water pressure is 1.5kg / cm. 2 . After casting, the copper slab is lifted out of the kang, and then sawed to a length of 123x232x 1560mm, which is the copper slab used in the embodiment.

[0057] 2.) Heating:

[0058] This example uses 123x 232x 1560mm (height x width x length) copper slab as raw material, and heats it to 850oC in a three-stage continuous heating furnace (existing furnace) for 1.5 hours, and the pressure in the furnace is slightly positive , And then hot-rolled.

[0059] 3.) Hot rolled billet:

[0060] The heated copper slabs are hot-rolled in a set of pass ...

Embodiment 2

[0080] 1.) Semi-continuous casting:

[0081] High-purity cathode copper is selected as the raw material, and then melted in a core power frequency induction furnace. The copper liquid surface is covered with calcined charcoal. The furnace temperature is 1180oC and the casting temperature is 1180oC. The surface of the mold is sealed and casted under the protection of gas. The casting speed is 6m / h, and the cooling water pressure is 2.5kg / cm. 2 . After the casting is finished, the copper slab is lifted out of the kang, and then sawed to a length of 132x243x1560mm, which is the copper slab used in the embodiment.

[0082] 2.) Heating:

[0083] In this example, 132x 243x 1560mm (height x width x length) copper slabs are used as raw materials and are heated to 900oC in a three-stage continuous heating furnace (existing furnace) for 2 hours, and the pressure in the furnace is slightly positive , And then hot-rolled.

[0084] 3.) Hot rolled billet:

[0085] Groove 1, boss 2, copper sla...

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Abstract

The invention discloses a method for producing a solid special conductive copper bar used for copper electrolysis in order to overcome the drawbacks of coarse cast structure grain, loose and low-density internal structure and the like of the conventional solid special conductive copper bar machined by using horizontal continuous casting. The method comprises the following steps: semi-continuous casting, heating, breaking down by hot rolling, pickling, washing surface, cold rolling, annealing, pickling, washing surface, drawing, detecting and packaging. In the invention, a heated copper slab ingot is subjected to hot rolling machining deformation in a group of hole patterns, five rolling passes are carried out in a 500mm rolling mill first, and three rolling passes are carried out on a 300mm rolling mill; and after multi-pass high-machining-power hot rolling deformation machining, the copper bar has the main advantages of eliminating coarse grains in the cast ingot, overcoming the drawback of loose internal structure of the cast ingot, completely changing the cast structure into machined structure, eliminating surface finish defect of metal by cold rolling annealing and drawing, and greatly improving quality index.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing, in particular to a production method of a solid-core special-shaped conductive copper bar for copper electrolysis. Background technique [0002] Large-scale solid-core special-shaped conductive copper bars for copper electrolysis are a new type of conductive material that has only begun to be used in the copper smelting industry in recent years. At first, it could not be produced in China and could only be imported to meet the needs of the industry, but the price was very expensive. [0003] At present, the traditional processing technology for domestic production of solid-core special-shaped conductive copper bars for copper electrolysis is: horizontal continuous casting-slab sawing and head-drawing-inspection-packaging. [0004] There are following disadvantages in this traditional process: [0005] 1.) The internal structure of the horizontal continuous casting slab is ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B21B1/08
Inventor 魏宽坤李双龙刘生伟邓予生薛永庆曹向阳
Owner 白银有色西北铜加工有限公司
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