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Processing method of rolled copper foil mother material

A processing method and technology of rolling copper foil, which is applied in metal rolling and other directions, can solve the problems that restrict the production of rolled copper foil base material, and achieve the effect of excellent internal structure, uniform performance and high dimensional accuracy

Active Publication Date: 2014-09-24
CNMC ALBETTER ALBRONZE
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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

Method used

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  • Processing method of rolled copper foil mother material
  • Processing method of rolled copper foil mother material
  • Processing method of rolled copper foil mother material

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Embodiment Construction

[0035] The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] A method for processing a rolled copper foil base material, comprising the following steps:

[0037] (1) Material selection: In order to reduce the impurity content of the product and improve the material purity, high-purity cathode copper (copper content greater than 99.95%) is used as raw material, and the electrolytic copper is passed through dilute sulfuric acid with a concentration of 6-10% After washing, it is dried under a nitrogen protective atmosphere to remove the scale and impurities on the surface of the raw material.

[0038] (2) Smelting: Send the processed raw materials into the melting furnace for melting. The melting furnace in this embodiment adopts a self-developed furnace cover. The furnace cover is basically sealed and only a switchable feeding window is left, and ...

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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...

Claims

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Application Information

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IPC IPC(8): B23P15/00B21B1/40C22F1/08
CPCB21B1/40B23P15/00C22F1/08
Inventor 姜业欣孙庆安郭丽丽张建华徐丙军刘晨亮丁长涛
Owner CNMC ALBETTER ALBRONZE
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