Double-color electroplating process

A two-color electroplating and process technology, applied in the field of electroplating, can solve problems such as poor adhesion between the palladium particle layer and the surface of the workpiece to be electroplated

Pending Publication Date: 2021-06-11
重庆富晟安创汽车零部件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a two-color electroplating process to solve the problems in the prior art between the conductive layer formed after electroplating and the palladium particle layer and between the palladium particle layer and the surface of the workpiece to be electroplated. The technical problem of poor adhesion between

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Embodiment Construction

[0027] The present invention will be described in further detail below by means of specific embodiments:

[0028] The reference signs in the drawings of the description include: base 1, spray tank 2, liquid guide cavity 3, nozzle 4, motor 5, liquid guide tube 6, liquid guide hole 7, sealed liquid guide sleeve 8, liquid inlet pipe 9 , Liquid inlet hole 10, communication hole 11, first positioning groove 12, limit block 13, stopper 14, support spring 15, air guide hole 16, air guide tube 17, positioning block 18, pressure relief hole 19, adjustable conduction Hole 20, shell 21, wind guide sleeve 22.

[0029] A two-color electroplating process, comprising the following steps:

[0030] Step 1, hot water washing, place the workpiece to be electroplated in a hot water washing tank, and wash with hot water at 35°C for 1.5 minutes; it is used to wash away impurities such as dust adhered to the surface of the workpiece to be electroplated.

[0031] Step 2. Ultrasonic degreasing. Plac...

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Abstract

The invention discloses a double-color electroplating process which comprises the following steps of ultrasonic oil removal, hydrophilization, coarsening, neutralization, acid presoaking, palladium activation, alkaline peptization, acidolysis peptization and chemical nickel plating. In the coarsening step, a mixed coarsening solution is adopted, and the mixed coarsening solution comprises ferrous sulfate heptahydrate, chromic anhydride and H2SO4, and the concentration ratio of the ferrous sulfate heptahydrate to the chromic anhydride to the H2SO4 is 1:(190-210):(190-210). Compared with the prior art, the ferrous sulfate heptahydrate, the chromic anhydride and the H2SO4 are matched to improve the microscopic roughness of the surface of a workpiece to be electroplated, so that the surface of the workpiece to be electroplated has sufficient adhesion capacity. According to the double-color electroplating process, alkali hydrolysis glue is firstly adopted, and then the acidolysis glue is adopted to carry out peptizing treatment on the workpiece to be electroplated, so that a divalent tin ion peptizing layer around colloid palladium of the workpiece to be electroplated is completely removed, metal palladium particles with activity are exposed, and therefore a conductive layer formed in the chemical nickel plating step and a metal palladium layer have a good bonding effect.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a two-color electroplating process. Background technique [0002] At present, the common workpiece substrates in the copper-nickel-chromium electroplating industry are ABS or PC / ABS (about 30% PC content) monochrome products. This type of workpiece has a large electroplating surface area and consumes a lot of raw materials. Get a good surface effect. After electroplating, some workpieces will also affect the matching due to the surface coating. Therefore, two-color material electroplating began to appear in the industry, which is generally used for automotive interior parts (small parts, high matching precision requirements), the common base material is ABS+PC, the part that can be electroplated is ABS material, and the part that cannot be electroplated is PC material. However, the common electroplating defects are overflow plating and exposed plastic, which affect the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/56C25D3/12
CPCC25D5/56C25D3/12
Inventor 方立龙
Owner 重庆富晟安创汽车零部件有限公司
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