Large-section oxygen-free copper busbar and preparation method thereof

A technology of oxygen-free copper and large cross-section, which is applied in the manufacture of cables/conductors, rods/rods/wires/strip conductors, metal/alloy conductors, etc. It can solve the problems of multiple production processes, low material utilization, and low conductivity. problems, to achieve the effect of improving quality performance, excellent surface quality and high conductivity

Inactive Publication Date: 2011-11-30
SHANDONG ZHONGJIA NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The traditional processing technology has low productivity, many production processes, long cycle time and high cost, and the size of raw materials is related to product specifications, which brings difficulties to the production preparation of multi-variety and small-batch production mode
The process adopts semi-continuous casting or continuous casting, the weight of the ingot is limited, and the auxiliary time required for extrusion is long; both hot extrusion and drawing processes need to cut the head and tail, the yield is low, and the material utilization rate is low less than 70%; pickling is used in this process, and the working environment is poor and polluted; the surface quality of products produced by this process is poor and the conductivity is low

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  • Large-section oxygen-free copper busbar and preparation method thereof
  • Large-section oxygen-free copper busbar and preparation method thereof

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Embodiment Construction

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0020] A large cross-section oxygen-free copper busbar is composed of chemical components in the following weight ratios:

[0021] Cu+Ag 99.97%, P 0.002%, Bi 0.001%, Sb 0.002%, As 0.002%, Fe 0.004%, Ni 0.002%, Pb 0.004%, Sn 0.002%, S 0.004 %, Zn is 0.003%, O is 0.001%, and the sum of impurities is 0.003%.

[0022] At 20°C, the resistivity is 0.016891Ωmm 2 / m, the conductivity is 59.2Ms / m, and the conductivity is 102.1%IACS.

[0023] Its preparation method comprises the following steps:

[0024] a. Smelting: select high-purity cathode copper with a copper-silver content of more than 99.97% as raw material, preheat and dry it, then use a vertical power frequency induction furnace to melt and keep it warm at a tempe...

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Abstract

The invention relates to an oxygen-free copper busbar and a preparation method thereof, in particular to a large-section oxygen-free copper busbar and a preparation method thereof, belonging to the technical field of nonferrous metal processing. The technological process of the present invention is: smelting→upward continuous casting→continuous extrusion→online sawing→head trimming→drawing→inspection and packaging. The invention solves the shortcomings of the traditional process of large-section copper bus bars, provides a production technology with short process flow, high degree of automation, low oxygen content, excellent product quality, environmental protection and pollution-free, and effectively improves the quality and performance of products , has the advantages of high purity, low oxygen content, high electrical conductivity, and excellent surface quality.

Description

technical field [0001] The invention relates to an oxygen-free copper busbar and a preparation method thereof, in particular to a large-section oxygen-free copper busbar and a preparation method thereof, belonging to the technical field of nonferrous metal processing. Background technique [0002] Large-section oxygen-free copper busbar is a kind of high-purity, high-conductivity, thermal conductivity and excellent bending forming and welding performance. It is mainly used for collecting, distributing and transmitting electric energy in switch and control equipment, suitable for high and low voltage electrical appliances, Switch contacts, power distribution equipment, busway and other electrical projects are widely used in super-high current electrolytic smelting projects such as metal smelting, electrochemical plating, chemical caustic soda, etc., and are also ideal conductive materials for high-speed railways and large power plants. [0003] At present, the traditional pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/02H01B1/02H01B13/00C22C9/00
Inventor 赵钦海彭永聪
Owner SHANDONG ZHONGJIA NEW MATERIALS
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