Method for preparing rolled copper foil

A technology for rolling copper foil and copper foil, applied in the direction of metal rolling, etc., can solve the problems of the influence of the quality of the finished foil, the large tolerance of manual foil making, and the large environmental pollution, and achieve good color consistency, good consistency and thickness. The effect of uniformity

Inactive Publication Date: 2005-12-21
SHANGHAI XINGYI METAL MATERIAL
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Problems solved by technology

The first process has two major problems: one is that a large amount of strong acid is used in the pickling process, which causes great pollution to the environment; the other is that the manual foil production has a large tolerance and poor uniformity, which has a certain impact on the quality of the finished foil
The second process uses rolled 0.01×46 soft copper foil to produce foil directly. The advantage is that cold-rolled 0.01mm foil has no pollution, the product thickness is uniform, the color difference is small, and the quality of the finished foil is good, but it must be made into 0.01mm. In the soft state of mm copper foil, there are two technical difficulties: one is how to make a foil with a thickness of 0.01mm and a tolerance of 0.0005 through cold rolling; the other is how to improve the softness of the finished foil to above grade two

Method used

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Embodiment Construction

[0007] The present invention will be further described below in conjunction with embodiment.

[0008] A preferred embodiment of the present invention adopts the preparation technology of the 20-roller Sendzimir rolling mill that the roll system is arranged as 1-2-3-4 as follows:

[0009] 0.1mm annealed rolling → 0.07mm rolling → 0.04mm rolling → 0.01mm

[0010] Among them, the total reduction is 90%, and the pass reduction is 87%. After rolling with a large reduction, the original crystal phase structure is destroyed, and it becomes longer. After the process, the copper foil grains rolled by a large reduction are recrystallized, and finally the grain size reaches the second level, and the softness is greatly improved.

[0011] The principle that the soft state of 0.01 mm can be produced by staged heat treatment and annealing with a large reduction is explained below. With the increase of reduction rate before annealing, the formation of cubic texture is significant, that is,...

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Abstract

This present invention discloses a method of rolling copper foil. It comprises that heat roll alloy copper, alternately repeat cold roll and anneal until the copper foil is 0.01mm thin and tolerance is 0.0005.The copper foil made by this method has the virtues of even thickness, good coherence. The product of this invention can be widely used to construction, craftwork, calendar, goldleaf painting, frame, costume and so on.

Description

technical field [0001] The invention relates to a method for preparing rolled copper foil. Background technique [0002] There are two commonly used processes for rolling copper foil: one is the most primitive production process and artificial foil, pickling, annealing; the other is to directly produce copper foil with rolled 0.01mm copper foil. The first process has two major problems: one is that a large amount of strong acid is used in the pickling process, which causes great environmental pollution; the other is that the manual foil production has large tolerances and poor uniformity, which has a certain impact on the quality of the finished foil. The second process uses rolled 0.01×46 soft copper foil to produce foil directly. The advantage is that cold-rolled 0.01mm foil has no pollution, the product thickness is uniform, the color difference is small, and the quality of the finished foil is good, but it must be made into 0.01mm. In the soft s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/40
Inventor 金振栋
Owner SHANGHAI XINGYI METAL MATERIAL
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