Computer hard disk aluminium base material parts chemical nickeling technology

A computer hard disk, electroless nickel plating technology, applied in the direction of liquid chemical plating, metal material coating process, superimposed layer plating, etc., can solve the problems of failing to meet environmental protection requirements and low cleanliness of parts

Inactive Publication Date: 2007-11-07
LIANGANG FASTENING SYST SHANGHAI
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a new electroless nickel plating process for aluminum substrate parts of computer hard disks, so as to solve the problems of low cleanliness of parts and failure to meet environmental protection requirements in ordinary electroless nickel plating technology

Method used

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  • Computer hard disk aluminium base material parts chemical nickeling technology

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Embodiment Construction

[0030] 1. Electroless nickel plating process for computer hard disk aluminum substrate components, including:

[0031] a. Solvent degreasing: soak the parts in a degreasing agent composed of naphtha at room temperature for 5-10 minutes, and use emulsification to degrease the parts; and use a filter pump to filter impurities in the degreasing liquid to improve Degreasing effect;

[0032] b. Water washing: use tap water to clean the degreasing agent on the surface of the parts;

[0033] c. Alkali degreasing: Heat the alkali degreasing solution consisting of 1-5 parts of sodium hydroxide and 0.5-2 parts of sodium silicate to 60-70°C, and then soak the parts in the alkali degreasing solution for 20-30 minutes , Use saponification to remove oil from the parts, and use shaking and ultrasonic waves to improve the oil removal effect; the equipment used is a filter pump, an ultrasonic generator, a rocking device, and a temperature control system.

[0034] d. Water washing: wash the p...

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Abstract

The present invention relates to computer hard disc fitting production, and is especially chemical nickel plating and washing process for computer hard disc part of aluminum material. The chemical nickel plating and washing process includes: degreasing with solvent, degreasing with alkali solution, acid soaking, eliminating ash, immersion plating zinc, chemical nickel plating, deactivating, many times of water washing after each of the above steps, stoving and other steps. During the process, the used water is filtered for reuse so as to save water.

Description

technical field [0001] The invention belongs to a method for processing computer hard disk accessories, in particular to an electroless nickel plating and cleaning process for computer hard disk aluminum substrate parts. Background technique [0002] With the rapid development of electronic technology in today's world, the replacement cycle of computer hard disk products is becoming more and more frequent. As the world's largest supplier of computer hard disks, Seagate Corporation of the United States constantly updates its products, and at the same time puts forward higher requirements for the performance of product components. This process technology is developed under this background. In the existing electroless nickel plating process, the product adopts ordinary electroless nickel plating technology, which cannot pass the RoHS test of the European Union, and the surface cleanliness and nickel layer performance cannot meet the latest standards related to Seagate Corporati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23G5/02C23G1/22C23G1/20C23C18/31C23C18/36C23C22/05
Inventor 李怀良胡勇
Owner LIANGANG FASTENING SYST SHANGHAI
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