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Novel aluminum corrosive foil pre-treatment process

A pretreatment and corrosion foil technology, which is applied in the field of new aluminum corrosion foil pretreatment technology, can solve the problems of surface color difference, deformation, unfavorable operation, etc., and achieve the effect of no color difference, simple process and convenient operation

Inactive Publication Date: 2018-02-16
江苏国瑞科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention relates to a new pretreatment process of aluminum corrosion foil, which solves the problem of easy deformation, color difference on the surface after treatment, and the removal of trace elements that are beneficial to pores after treatment, which is not conducive to subsequent operations. related defects

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  • Novel aluminum corrosive foil pre-treatment process

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] A new aluminum corrosion foil pretreatment process, the pretreatment process includes the following steps:

[0021] (1) Soak the aluminum foil in the pretreatment solution for 45 seconds;

[0022] (2) After cleaning, put it in the primary corrosion mixture at a temperature of 70°C, and apply a current density of 0.70A / cm 2 The direct current is electrolytically corroded for 60 seconds;

[0023] (3) Clean it with pure water and place it in a bath solut...

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Abstract

The invention relates to a novel aluminum corrosive foil pre-treatment process which comprises the following steps of: (1) putting an aluminum plain foil in a pre-treatment liquid to be soaked for 45s; (2) then cleaning the foil thoroughly, putting the foil in a primary corrosive mixed liquid at 70 DEG C, and applying a direct current, the current density of which is 0.70A / cm<2> for electrolytic corrosion for 60s; (3) cleaning the foil thoroughly with pure water, putting the foil in a tank liquid containing 2% of nitric acid at 70 DEG C, and applying a direct current, the current density of which is 0.15A / cm<2> for electrolytic corrosion for 600s; and (4) finally, cleaning the foil thoroughly with pure water, and then putting the foil in an oven at 220 DEG C to be dried. The process provided by the invention overcomes related defects that the corrosive foil which is pre-treated is likely to deform, the surface of the foil is of chromatic aberration after treatment, trace elements beneficial for generating holes will be removed through treatment, follow-up operations are not facilitated and the like.

Description

technical field [0001] The invention relates to the technical field of pretreatment of corroded foil, in particular to a new pretreatment process of corroded aluminum foil. Background technique [0002] The existing corroded foil pretreatment process is basically sulfuric acid hydrochloric acid, phosphoric acid and sodium hydroxide for treatment. The pretreatment temperature of sulfuric acid hydrochloric acid and phosphoric acid is basically about 65-75°C. The corroded foil is easily deformed at high temperature. After the porosity treatment, the surface There is color difference; although the alkali treatment temperature is low, it is easy to remove those trace elements on the surface of the light foil that are beneficial to pores during the alkali treatment process, so a new pretreatment process is urgently needed to solve this problem . Contents of the invention [0003] (1) Solved technical problems [0004] The invention relates to a new pretreatment process of alum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/04
CPCC25F3/04
Inventor 宋亮陈华昌陈俊铭张泽远胡涛涛
Owner 江苏国瑞科技有限公司
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