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A high-performance oxygen-free copper rod and its preparation method

An oxygen-free copper rod, high-performance technology, applied in the field of electrical copper, can solve problems such as uneven deformation of copper rods, unsatisfactory copper rod drawing process, and limited copper rod length.

Active Publication Date: 2017-05-24
JINYUAN ELECTRIC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, in the process of preparing the oxygen-free copper rod by the up-drawing method, the deformation of the copper rod is uneven and the length of the copper rod is limited.
The main reason for the above phenomenon is that in the prior art, the drawing process of the copper rod in the oxygen-free copper rod preparation method is not ideal enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of preparation method of high-performance oxygen-free copper rod that the present invention proposes, comprises the following steps:

[0019] S1. Raw materials are configured according to the following weight percentages: Cr, 0.2%; Te, 0.07%; La, 0.07%; Ag, 0.4%; the balance is Cu; the above-mentioned raw materials are sent into the smelting furnace for melting, and the surface of the copper liquid is covered with a charcoal layer , during the melting process, the furnace temperature of the melting electric arc furnace is kept at 1130°C, and the melted copper liquid in the melting furnace is transferred to the holding furnace for heat preservation, and the heat preservation temperature is 1106°C;

[0020] S2. Put the hollow crystallizer directly into the copper liquid. The hollow crystallizer is cooled by a water spacer. The copper liquid condenses into a solid in the hollow crystallizer. During the drafting process of the stretching mechanism to make the rod bla...

Embodiment 2

[0023] A kind of preparation method of high-performance oxygen-free copper rod that the present invention proposes, comprises the following steps:

[0024] S1. Raw materials are configured according to the following weight percentages: Cr, 0.3%; Te, 0.09%; La, 0.09%; Ag, 0.2%; the balance is Cu; the above raw materials are sent into the melting furnace for melting, and the surface of the copper liquid is covered with a charcoal layer , during the melting process, the furnace temperature of the melting electric arc furnace is kept at 1170°C, and the molten copper in the melting furnace is transferred to the holding furnace for heat preservation, and the heat preservation temperature is 1114°C;

[0025] S2. Put the hollow crystallizer directly into the copper liquid. The hollow crystallizer is cooled by a water spacer. The copper liquid condenses into a solid in the hollow crystallizer. During the drafting process of the stretching mechanism to make the rod blank, the rapping me...

Embodiment 3

[0028] A kind of preparation method of high-performance oxygen-free copper rod that the present invention proposes, comprises the following steps:

[0029] S1. Raw materials are configured according to the following weight percentages: Cr, 0.24%; Te, 0.08%; La, 0.08%; Ag, 0.33%; the balance is Cu; the above raw materials are sent into the melting furnace for melting, and the surface of the copper liquid is covered with a charcoal layer , during the melting process, the furnace temperature of the melting electric arc furnace is kept at 1150°C, and the molten copper in the melting furnace is transferred to the holding furnace for heat preservation, and the heat preservation temperature is 1109°C;

[0030] S2. Put the hollow crystallizer directly into the copper liquid. The hollow crystallizer is cooled by a water spacer. The copper liquid condenses into a solid in the hollow crystallizer. During the drafting process of the stretching mechanism to make the rod blank, the rapping ...

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PUM

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Abstract

The invention discloses a high-performance oxygen-free copper rod and a manufacturing method thereof. The high-performance oxygen-free copper rod comprises the following steps that by weight percent, 0.2%-0.3% of Cr, 0.07-0.09% of Te, 0.07%-0.09% of La, 0.2%-0.4% of Ag and the balance Cu are weighed; the raw materials are sent into a smelting furnace to be melted, the surface of a copper solution is covered with a charcoal layer, and in the melting process, the temperature of a smelting electric arc furnace is maintained at 1130-1170 DEG C; a hollow crystallizer directly stretches into the copper solution and is cooled through a water spacer bush, the copper solution is condensed into solid in the hollow crystallizer, and the upper end of the solid is drawn through a drawing machine to be manufactured into a rod blank; and multiple passes of drawing is conducted below the recrystallization temperature of the rod blank, intermediate annealing is conducted between the multiple passes of drawing, and the oxygen-free copper rod with the preset diameter is obtained.

Description

technical field [0001] The invention relates to the technical field of electrical copper, in particular to a high-performance oxygen-free copper rod and a preparation method thereof. Background technique [0002] With the development of the electrical industry, the market demand for copper materials for cables, wires, switches and power supply and distribution equipment has increased rapidly. Oxygen-free copper rods are copper materials widely used to make electrical cables. At present, among the production methods of oxygen-free copper rods, the quality of oxygen-free copper rods obtained by the above method is the most stable. However, in the prior art, in the process of preparing the oxygen-free copper rod by the upward drawing method, there are phenomena that the deformation of the copper rod is uneven and the length of the copper rod is limited. The main reason for the above phenomenon is that in the prior art, the drawing process of the copper rod in the preparation m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C9/00B21C37/04
CPCB21C37/04C22C1/02C22C9/00
Inventor 田正喜毛文秀曾月娥
Owner JINYUAN ELECTRIC GRP