Continuous extrusion and continuous rolling process method and production line used for producing oxygen-free copper strip billet

Abstract

The invention belongs to the field of copper processing, relating to the process method of the production of copper strip material, and in addition, relating to a copper strip material continuous extrusion and continuous rolling device. The invention provides a continuous extrusion and continuous rolling method used for producing oxygen-free copper strip billet, comprising the following steps: taking the oxygen-free copper rod as a raw material to carry out continuous extrusion to obtain the copper slabs; utilizing the heat generated in extrusion to carry out continuous hot rolling on the copper slabs; and cooling the copper bandlets after hot rolling, discharging to obtain the copper strips, wherein protective gas is adopted to protect the space between the extrusion outlet and the cooling inlet. The invention combines the advantages of low content of oxygen of the upper-draw process, great deformation of the continuous extrusion method and good performance of hot rolling method; the product has the advantages of low content of oxygen, compact organization, fine grains and excellent comprehensive performance; and the process method has the advantages of short flow, less heating and annealing processes, energy saving and environmental protection and the like.

Description

Technical field: [0001] The invention belongs to the field of copper processing, and relates to a process method for producing copper strips, and also relates to continuous extrusion and rolling equipment for copper strips. Background technique: [0002] At present, there are three commonly used production methods for copper plate and strip blanks: semi-continuous casting ingot hot rolling blanking method, horizontal continuous casting strip billet method and hot extrusion blanking method. The subsequent processing methods are the same, and the technological process is: plate (strip) blank milling - rough rolling - annealing - finishing rolling - finishing - annealing - finished product. [0003] The disadvantages of these methods are: [0004] Both hot rolling and hot extrusion need to heat the billet, which results in high energy consumption and high oxygen content in the product. [0005] The structural defects of the as-cast raw copper material of horizontal continuous...

AI Technical Summary

Problems solved by technology

[0004] Both hot rolling and hot extrusion need to heat the billet, which results in high energy consumption and high oxygen content in the product

[0005] The structural defects of as-cast raw copper material of horizontal continuous casting are not easy to eliminate, and will be inherited to the final product, resulting in low product quality

[0006] Due to the limitation of the traditional copper strip blank acquisition method, the surface quality and internal grain structure of the blank are very poor, and processes such as milling or peeling are required to eliminate defects in the raw material, and surface milling removes surface oxidation and surface cracks during the rolling process. And knot lines in the continuous casting process, etc.; hot extrusion requires peeling, and there is excess pressure, resulting in low material utilization; the process is long, and defects cannot be completely eliminated

[0007] There are many production processes, long process, high equipment investment and large floor area

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