Processing method of rolled copper foil mother material

Abstract

The invention discloses a processing method of a rolled copper foil mother material, and belongs to a high-precision soft-state red copper belt. According to the method, the conventional flow process for the red copper belt processing is changed from the production flow process, firstly, from cast ingots, high-quality raw materials are adopted for producing the cast ingots with compact tissues and qualified ingredients through semi-continuous casting; after hot rolling cogging, four-side milling is carried out for milling out surface layer scales; then, a rolling machine is adopted for rolling finished products through adopting short-rolling-process and large-processing-rate processing; in addition, the belt material plate type is improved through a stretch bender; next, the annealing is carried out through a gas pad type continuous annealing furnace; and finally, the shearing and trimming is carried out, and the operation turns to a copper foil workshop. The processing method provided by the invention has the characteristics that the conductivity is good, the dimension precision is good, the surface quality is good, the internal tissue is good, the performance is uniform, the plate shape is flat and straight, no burr exists at the edges, and the like. Therefore good popularization and application values are achieved.

Description

technical field [0001] The invention relates to a processing method for a rolled copper foil base material. The rolled copper foil base material belongs to a high-precision soft copper strip. Background technique [0002] Copper foil is an indispensable main raw material for making printed circuit boards (PCB), copper clad laminates (CCL) and lithium-ion batteries. Industrial copper foil can be divided into two categories: rolled copper foil and electrolytic copper foil according to its manufacturing process. Among them, compared with electrolytic copper foil, calendered copper foil has excellent characteristics such as good conductivity, high strength, good flexibility, and low surface roughness. Due to its ultra-thin thickness, the rolled copper foil is very difficult to process while ensuring its product characteristics, so the requirements for various indicators of its base material are very high. The only domestic companies that produce rolled copper foil rely on impo...

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Problems solved by technology

[0008] The above points seriously restrict the production of rolled copper foil base material. At present, there is no good solution

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