Method for producing oxygen-free high conductivity type copper strip

A production method and technology for oxygen-free copper are applied in the production field of high-conductivity oxygen-free copper strips, which can solve the problems of infiltration, environmental pollution, and high equipment requirements, and achieve the effects of low production cost, low investment, and pollution avoidance.

Active Publication Date: 2008-05-21
吴江万宝铜带有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0004] This method is prone to oxygen infiltration during the hot rolling process, so it is necessary to use lye to degrease and pickle the oxide layer on the surface of the strip during the annealing process, which will cause environmental pollution
At the same time, the law has high requirements for equipment and is not applicable to small and medium-sized enterprises with a scale of less than 100,000 tons

Method used

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  • Method for producing oxygen-free high conductivity type copper strip
  • Method for producing oxygen-free high conductivity type copper strip
  • Method for producing oxygen-free high conductivity type copper strip

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Experimental program
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Embodiment Construction

[0026] The specific embodiment of the present invention is described below:

[0027] A grade A copper electrolytic plate is selected as the raw material, and the electrolytic plate is immersed in the conjoined furnace 250 of the horizontal continuous casting unit. The one-piece furnace 250 is separated by the pool wall into a melting pool 210 , a purification pool 220 and a heat preservation pool 230 which are successively adjacent. A first channel 215 is provided at the bottom of the pool wall between the melting pool 210 and the purification pool 220 , and a second channel 225 is provided at the bottom of the pool wall between the purification pool 220 and the heat preservation pool 230 .

[0028] The copper water can pass through the first channel 215 and the second channel 225 to flow through the melting pool 210 , the purification pool 220 and the heat preservation pool 230 sequentially without additional pouring process of the copper water.

[0029] The electrolytic pla...

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Abstract

The invention relates to a method for producing copper strips with a bright surface and no oxidation. The method sequentially includes a horizontal continuous casting step, a cold rolling step and an annealing step. In the horizontal continuous casting step described above, a conjoined furnace is used for smelting, and at the same time, a coupled crystallizer with a steam chamber installed between the primary water cooling system and the secondary water cooling system to protect the surface of the strip from oxygen is used to smelt the strip. Casting, thus avoiding oxidation on the surface of the billet, omitting the hot rolling step and directly performing cold rolling, and directly annealing without the pickling and alkali washing steps. The surface of the copper strip produced by the invention is smooth and free from oxidation, the energy consumption in the production process is low and pollution-free, the cost is low, the process control is relatively simple, and it is suitable for the production of small and medium-sized enterprises.

Description

technical field [0001] The invention relates to a production method of a high-conductivity oxygen-free copper strip. Background technique [0002] High-conductivity oxygen-free copper is used to make high-end product components, and is widely used in electric power, electrical appliances, communications, electronics, computers and other industries. At present, domestic and foreign non-ferrous processing enterprises mostly use vertical continuous casting or horizontal continuous casting strip billet-hot rolling-cold rolling-annealing method to produce high-conductivity oxygen-free copper strip. [0003] The specific technological process of this method is: smelting-vertical continuous casting or horizontal continuous casting strip billet-heating-hot rolling-milling face milling-cold rolling-horizontal or vertical annealing-finished product shearing and packaging. An intermediate annealing step is sometimes added to the hot rolling step. [0004] This method is prone to oxyg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/11
Inventor 倪智勇
Owner 吴江万宝铜带有限公司
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