Nickel-chromium plating part and manufacturing method thereof

A manufacturing method and component technology, applied in nickel-chrome-plated components and its manufacturing field, can solve problems such as poor corrosion resistance, corrosion resistance that cannot meet the requirements of corrosive environments, and unsuitable products
CN104772947AActive Publication Date: 2015-07-15JIAXING MINHUI AUTOMOTIVE PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIAXING MINHUI AUTOMOTIVE PARTS CO LTD
Publication Date
2015-07-15

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Abstract

The invention discloses a nickel-chromium plating part and a manufacturing method thereof. The nickel-chromium plating part includes a substrate, a pretreatment coating and a decorative layer. The pretreatment coating is deposited on the entire substrate, and a copper plate layer and a functional layer are formed on the pretreatment coating; the functional layer is formed on the copper plate layer; the functional layer includes a low potential nickel layer and a microporous nickel layer formed on the low potential nickel layer; and the decorative layer is formed on the microporous nickel layer. Based on the micropores on the part surface and chrome plating technology, the low potential nickel layer is added to improve the corrosion resistance of the product, especially the corrosion resistance of trivalent chromium plating product, so as to promote the large scale popularization and application of the trivalent chromium product, which has better environmental protection performance.
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Description

technical field

[0001] The invention relates to a workpiece with a surface electroplating layer structure and its electroplating technology, in particular to a nickel-chrome plated part and its manufacturing method.

[0002] In this application, the potential difference is the difference between the standard potentials measured by taking each of the two adjacent layers as a whole. Background technique

[0003] The European market has increasingly stringent environmental protection requirements, and automobile factories have higher and higher requirements for electroplating corrosion resistance. At present, chromium electroplating cannot meet the corrosion requirements of specific environments (at the same time, it can meet the salt spray resistance test of 80h and the Russian mud resistance test. 336h).

[0004] In the electroplating industry, the method of firstly plating double-layer nickel or triple-layer nickel and then chromium plating is generally used to improve the ...

Claims

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