Production technology for hollow abnormal-shape electric anaerobic copper plate

Abstract

The invention provides a production technology for a hollow abnormal-shape electric anaerobic copper plate, comprising the following technologies of: upwards leading a continuous anaerobic copper strip blank, carrying out cold rolling, annealing, brushing in an acid washing way, carrying out primary cold-rolling forming (a cold rolling method), straightening, testing, and packing. Compared with the prior art, the production technology has the following advantages that 1) the production technology is high in production efficiency, and the cold rolling technology primarily and coldly rolls double rows of continuous electric convex hulls through a specific abnormal-shape hole pattern, so that the primary forming can be carried out; 2) the product is regular in appearance shape, the electric convex hulls which are primarily formed by the cold rolling method and the cross-section shapes are regular in shapes, and are stable and even in size, and the defect problem such as the 'bamboo joints' shape caused by the repeated press forming in the conventional technology can be avoided; 3) the production technology is short in technological process, is low in cost, and is directly and coldly rolled into stripe materials as required by upwards leading the continuously-cast anaerobic copper strip blank, the primary cold-rolling forming can be carried out after the thermal treatment, the higher-cost procedures such as the heating and the hot-rolling cogging can be eliminated, the technology can be optimized, and the production cost can be reduced; and 4) the product is good in product quality, and has the characteristics of being high in purity, low in oxygen content, high in electric conductivity, and good in surface quality.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a production process of a hollow-core special-shaped conductive oxygen-free copper plate. Background technique [0002] With the vigorous development and technological progress of my country's smelting industry, the application of energy-saving hollow special-shaped conductive copper plates will become more and more extensive, and it has been used in copper smelting projects and new copper electrolysis processes by ISA method. Hollow-core special-shaped conductive copper plate, its cross-section is an integral conductive plate with double rows of continuous conductive convex hulls. At present, the traditional processing technology of hollow-core special-shaped conductive copper plate is as follows: semi-continuous casting - heating - hot rolling blanking - milling - cold rolling -Sawing to length (sawing width, cutting length) -Heat treatment (copp...

AI Technical Summary

Problems solved by technology

This processing technology has the following disadvantages: 1) The use of stamping method to produce hollow special-shaped conductive copper plates requires special large-scale hydraulic presses of more than 3000t, large-scale sawing machines, special punching dies, spreaders and other equipment, and in the length direction of the finished product The manufacture of the upper conductive convex hull is stamping, which needs to be divided into four overall punching to complete the forming of a finished product (5600mm long)

The operation process is complicated and difficult to grasp accurately, the gap time is long, the production efficiency is low, and it is difficult to realize continuous mass production

2) When punching two symmetrical conductive convexes of the hollow-core special-shaped conductive copper plate, it is necessary to draw a line three times in the length direction of each copper plate with a rectangular cross-section in advance as a mark for moving the copper plate, which is time-consuming low work efficiency

3) Poor appearance quality and irregular shape

The two symmetrical conductive convex hulls of each finished product need to be stamped four times to form the convex hull, and at the connection of every two stampings, the surface of the conductive convex hull (R=15mm arc surface) produces an obvious concave shape Defects, that is, "bamboo"-shaped defects, affect the overall appearance quality and cross-sectional shape of the hollow-core special-shaped conductive plate

4) High oxygen content and low conductivity

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