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Copper bus bar with high strength, high conductivity and high toughness and preparation method thereof

A technology of copper busbar and high conductivity, which is applied in the manufacture of cables/conductors, metal/alloy conductors, and the manufacture of extensible conductors/cables. Effect of temperature rise and energy consumption reduction

Inactive Publication Date: 2012-06-27
福州市广福有色金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main technical properties of copper bus bars produced by general enterprises are produced according to the requirements of the national standard GB / T5585-2005, but such technical properties can no longer meet the needs of high-tech development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: Prepare a copper bus bar with high strength, high conductivity and high toughness with full round edges in a hard state, and its specification: 8mm×80mm.

[0038] 1. Copper melting:

[0039] Place the cathode copper purchased on the market in a power frequency cored induction furnace to heat the cathode copper to melt the cathode copper melt. The surface of the molten cathode copper melt is covered with a charcoal layer of 90 mm, so that the copper liquid is always isolated from oxygen. After the cathode copper is melted, the temperature of the cathode copper melt is controlled at 1160°C.

[0040] 2. Metamorphic treatment of molten copper:

[0041] The cathode copper melt obtained in step 1, when the temperature of the cathode copper melt is 1160 ° C, put the yttrium rare earth copper-based master alloy as a modifier into a bell jar refined by graphite, and then press the graphite bell jar with the modifier Enter the cathode copper melt and move back and...

Embodiment 2

[0052] Example 2: Prepare a hard high-strength, high-conductivity, high-toughness copper busbar, the specification of which is 8mm×60mm.

[0053] 1. Copper melting:

[0054] Place the cathode copper purchased on the market in a power frequency cored induction furnace to heat the cathode copper to melt the cathode copper melt. The surface of the molten cathode copper melt is covered with a charcoal layer of 85 mm, so that the copper liquid is always isolated from oxygen. After the cathode copper is melted, the temperature of the cathode copper melt is controlled at 1150°C.

[0055] 2. Metamorphic treatment of molten copper:

[0056] The cathode copper melt obtained in step 1, when the temperature of the cathode copper melt is 1150 ° C, put the rare earth copper-based master alloy of yttrium as a modifier into a bell jar refined by graphite, and then place the graphite bell jar with the modifier Press into the molten cathode copper and move back and forth, left and right evenl...

Embodiment 3

[0067] Example 3: Prepare a hard high-strength, high-conductivity, high-toughness copper busbar, the specification of which is 6mm×60mm.

[0068] 1. Copper melting:

[0069] Place the cathode copper purchased on the market in a power frequency cored induction furnace to heat the cathode copper to melt the cathode copper melt. The surface of the molten cathode copper melt is covered with a charcoal layer of 80 mm, so that the copper liquid is always isolated from oxygen. After the cathode copper is melted, the temperature of the cathode copper melt is controlled at 1175°C.

[0070] 2. Metamorphic treatment of molten copper:

[0071] Put the cathode copper melt obtained in step 1 into a bell jar refined with graphite when the temperature of the cathode copper melt is 1175° C. as a modifier, and then press the graphite bell jar with the modifier Enter the cathode copper melt and move back and forth evenly, so that the modifier is evenly mixed into the cathode copper melt.

[0...

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Abstract

The invention relates to a copper bus bar with high strength, high conductivity and high toughness and a preparation method thereof. The copper bus bar is characterized in that the material comprises 99.96-99.998% of copper and silver, 0.002-0.02% of yttrium rare earth and 0-0.038% of impurities, wherein silver accounts for 0.0005-0.01% of copper and silver; and the copper master alloy containingthe yttrium rare earth is used as a modifier. The preparation method comprises the following steps: (1) melting a copper material: heating the cathode copper in a mains frequency core induction furnace to melt the cathode copper into liquid cathode copper; (2) modifying liquid copper: melting the modifier in the liquid cathode copper and fully mixing the modifier with the liquid cathode copper; (3) drawing a continuously cast copper bar upwards: causing a crystallizer of a continuous casting machine to stretch into the liquid cathode copper, condensing the liquid cathode copper into the copper bar in the crystallizer and drawing the copper bar upwards by means of two pairs of drawing roll mechanisms in the continuous casting machine to lead the copper bar to a take-up machine via a wheel frame; (4) continuously extruding the copper bar at medium temperature and carrying out anti-oxidation cooling; and (5) carrying out draw forming: putting copper bus bar blanks on a drawing machine, carrying out draw forming on the copper bus bar blanks.

Description

technical field [0001] The invention relates to a high-strength, high-conductivity, high-toughness copper busbar and a preparation method thereof. Background technique [0002] As a conductive component or component, copper busbar is widely used in industries such as electronics, electrical appliances, power transmission and transformation, smart grid, and high-tech products. The copper bus bar is long, and the general section shape is rectangular. In the hard state, the main technical performance of the copper busbar is in accordance with the requirements of the national standard GB / T5585-2005: conductivity ≥ 97%IACS, hardness ≥ 65HB, bending ≥ 90°. [0003] In recent years, the country has increased the investment and development of basic industries and independent innovation, and the construction of large-scale projects such as large-scale hydropower stations, nuclear power stations, subways, airports, high-speed trains, and high-tech products has required a lot of condu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/02H01B1/02H01B13/00H01B13/008
Inventor 朱长榕卢庆忠张柄根刘鲁闽高松峰陈升炳
Owner 福州市广福有色金属制品有限公司
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