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Plating liquid for plating micro-crack nickel and use thereof

A technology of micro-crack nickel and electroplating solution, applied in the field of electroplating solution, can solve the problems affecting the overall appearance of the car, prone to corrosion, customer dissatisfaction, etc.

Inactive Publication Date: 2010-05-12
NINGBO SWELL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of parts electroplated by microporous nickel process is prone to corrosion at low temperature, especially in cold European countries, this situation is more serious, which seriously affects the overall appearance of the car and directly leads to great dissatisfaction among consumers

Method used

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  • Plating liquid for plating micro-crack nickel and use thereof
  • Plating liquid for plating micro-crack nickel and use thereof
  • Plating liquid for plating micro-crack nickel and use thereof

Examples

Experimental program
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Embodiment 1

[0088] A pre-treatment metallization, through the pre-treatment of ordinary ABS plastic electroplating process, the process of forming a chemical nickel layer about 2 microns thick in the chemical nickel tank, the parts change from plastic parts to metal parts, so that the subsequent electroplating can proceed smoothly.

[0089] B bright copper, put the parts metallized through the pretreatment of A into the bright copper tank, and the composition and process specifications of the electroplating solution are:

[0090] Copper Sulfate 200g / L

[0091] Sulfuric acid 50 g / L

[0092] Chloride 60 mg / L

[0093] 1541 MAKE UP 10ml / l

[0094] 1541 LEVETER 0.3 ml / l

[0095] 1541 MAINTENANCE 0.3 ml / l

[0096] Temperature 26°C

[0097] Time 41 minutes

[0098] Current density 3A / dm 2

[0099] Using the phosphor copper ball as the anode, copper is deposited on the surface of the electroplating piece by direct current electrolysis to form a bright copper layer with a thickness of abou...

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Abstract

The invention discloses plating liquid for plating micro-crack nickel and use thereof. One liter of the plating liquid mainly comprises the following components: 180 to 260 grams of nickel chloride, 20 to 60 milliliters of acetic acid, 80 to 120 milliliters of ELPELYT MR and 1 to 5 milliliters of 62A. In the invention, the plating liquid is used for plating micro-crack nickel on the surface of a plastic piece, and the plating process uses the plastic piece as a substrate and comprises the following steps: A, plastic surface metallization; B, bright copper plating; C, semibright nickel plating; bright nickel plating; E, washing with water; F, micro-crack nickel plating; G, washing with water; bright chromium plating; I, washing; J, washing with hot water; and K, drying. The invention provides a novel formula for the liquid plating. According to the formula, the plastic piece can generate micro cracks in a nickel bath, the anticorrosion performance of the plastic piece is improved obviously, the product does not decay in a cold environment, and the service life of the plastic piece is prolonged.

Description

(1) Field of invention [0001] The invention relates to an electroplating solution for micro-crack nickel electroplating and its application, especially its application in micro-crack nickel electroplating on the surface of plastic parts. (2) Background technology [0002] In the electroplating industry, double-layer nickel plating or multi-layer nickel plating followed by chrome plating is generally used to improve the anti-corrosion ability of the workpiece. The widely used double-layer nickel process includes: semi-bright nickel + bright nickel + crack-free chromium. However, due to the high stress of the chromium layer itself, it is difficult to obtain a chromium layer without cracks or pores in the industry. After the chromium layer exposed to the air is passivated, its potential is more positive than that of nickel. When it encounters corrosion in the atmosphere When the medium is used, it forms a corrosion battery with the nickel layer. In this battery, the nickel is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/12C25D5/14
Inventor 邵建荣蒋晓东茹维锋
Owner NINGBO SWELL IND CO LTD
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