Method for processing soft copper foil

Abstract

The invention relates to a method for processing a soft copper foil. The copper foil manufactured by the method has the advantages of even hardness, clean surface, brightness, no oil pollution, and higher product qualification rate. The method comprises the following steps: smelting electrolytic copper and then casting the electrolytic copper into a cast ingot; milling the surface of the cast ingot; performing homogenization treatment on the cast ingot in a heating furnace; performing hot rolling on the cast ingot immediately after the treatment; performing acid cleaning on the cast ingot after finishing the hot rolling; blowing and drying the cast ingot after the acid cleaning and then annealing the cast ingot; and performing a cold rolling process after the annealing. The method is characterized in that the cold rolling process adopts four-roller cold rolling, a cold rolling liquid used in the cold rolling is prepared from coal oil, gasoline and rape oil through mixing, and the mixture ratios of the components comprise: 80 to 85 percent of the coal oil, 15 to 17 percent of the gasoline and 5 to 8 percent of the rape oil; after the cold rolling, the semi-automatic continuous annealing is performed directly; and a single layer of a metal foil is heated evenly in a heating body, the single layer at one end is used for uncoiling, the middle part is a furnace body for heating, while the single layer at the other end is used for coiling, and protective gas is kept between 0.3 and 0.5 Pma in the furnace during annealing.

Description

(1) Technical field

[0001] The invention relates to the technical field of copper foil processing, in particular to a processing method for soft copper foil. (2) Background technology

[0002] At present, the process of producing soft copper foil in the enterprise is: after the electrolytic copper is smelted, it is cast into ingots, then milled, and then enters the heating furnace for homogenization treatment. After the treatment, it is immediately hot-rolled. After the hot-rolled , into pickling, after pickling, blow-dried, then annealed, after annealed, enter the cold rolling process, after cold rolling to the finished product, then clean, anneal, and cut. This process has defects in the two procedures of "surface cleaning" and "vacuum annealing". Yield: When "vacuum annealing" is used, due to the "static annealing" method, the product is very easy to cause "uneven hardness" and "surface oil stains" and mutual "sticking", and the product is easily scrapped. (3) Contents...

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