Method for preparing continuous extrusion high-tech energy-saving copper bus

A copper busbar, a high-tech technology, applied in the direction of cable/conductor manufacturing, conductors, electrical components, etc., can solve problems such as the inability to control the oxygen content, the chance of contact with oxygen, and the impact on product quality, so as to achieve the improvement of the production site environment, Great extensibility and good electrical conductivity

Inactive Publication Date: 2009-08-26
JIANGYIN AIDUOFU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional copper busbar smelting process adopts the method of "down casting", and the copper liquid has the opportunity to contact with oxygen during pouring, so the oxygen content cannot be controlled
Therefore, its oxygen content is high, its resistance is high, its ductility is poor, and it is easy to crack when bent at 90°.
impact on product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: Preparation of soft continuous extrusion copper busbar

[0028] Step 1. Smelting Put 1# electrolytic copper in the melting furnace, raise the temperature of the furnace to keep the temperature of the copper liquid at 1150°C, and cover the surface of the copper liquid with a charcoal layer, so that the copper liquid is always isolated from oxygen;

[0029] Step 2. Upward continuous casting The hollow crystallizer is directly inserted into the copper liquid. The hollow crystallizer is cooled by a water spacer. The copper liquid is condensed into a solid in the hollow crystallizer. The upper end of the solid is drawn by a drafting mechanism to make a copper rod. ;

[0030] Step 3, continuous extrusion Place the copper rod obtained in step 2 on an extruder and continuously extrude it into a billet;

[0031] Step 4, cold drawing and forming The billet obtained in step 3 is placed on a drawing machine for cold drawing and forming to make a continuous extruded c...

Embodiment 2

[0037] Embodiment 2: Preparation of hard continuous extruded copper busbar

[0038] Step 1. Smelting Put the cathode copper in the melting furnace, and raise the temperature of the furnace to maintain the temperature of the copper liquid at 1170°C. The surface of the copper liquid is covered with a charcoal layer, so that the copper liquid is always isolated from oxygen;

[0039] The remaining steps are the same as Example 1.

[0040] Main Specifications:

[0041] 1. Material: copper + silver content = 99.94%, oxygen content = 0.0015%;

[0042] 2. Tensile strength: 206N / mm 2 , the surface is curved without cracks or triangles;

[0043] 3. Resistance: 0.01760Ω.mm / m 2 .

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Abstract

The invention relates to a method for preparing a continuous extrusion high-tech energy-saving copper bus. In materials, the content of copper and sliver is more than or equal to 99.94, and the content of oxygen is less than or equal to 0.0015. The preparation method comprises the following steps: firstly, melting, namely, placing No. 1 electrolytic copper or cathode copper into a melting furnace, raising the temperature of the furnace, keeping the temperature of copper liquid between 1,130 and 1,170 DEG C, and covering a charcoal layer on the surface of the copper liquid; secondly, updraft continuous casting, namely, directly extending a hollow crystallizer into the copper liquid, cooling the hollow crystallizer by adopting a water jacket, condensing the copper liquid into solid in the hollow crystallizer, and drafting the upper end of the solid by a drafting mechanism to manufacture a copper rod; thirdly, continuous extrusion, namely, placing the copper rod obtained in step two into an extruder, and continuously extruding the copper rod into a blank; and fourthly, cold drawing and forming, namely, placing the blank obtained in step three into a drawing machine to carry out cold drawing and forming to prepare the continuous extrusion copper bus. The content of the oxygen of the continuous extrusion copper bus is low.

Description

technical field [0001] The invention relates to a copper busbar for electricians, in particular to a preparation method for continuous extrusion high-tech and energy-saving copper busbars for electricians. It belongs to the technical field of electrical alloy materials. Background technique [0002] Copper bus bar is used to make motor and electrical winding coils, high and low voltage electrical switch contacts and conductor materials for installation of power supply and distribution equipment. Copper busbar can be divided into soft copper busbar and hard copper busbar according to its use. The traditional copper busbar smelting process adopts the "down casting" method, and the copper liquid has the opportunity to contact with oxygen during pouring, so the oxygen content cannot be controlled. Therefore, its oxygen content is high, its resistance is high, its ductility is poor, and it is easy to crack when bent at 90°. impact on product quality. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B5/00
Inventor 胡德良周永甫李向清
Owner JIANGYIN AIDUOFU TECH
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