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Plastic plating method for automobile component

A technology for plastic electroplating and auto parts, applied in the plating of superimposed layers, metal material coating process, coating and other directions, can solve the problems of poor adhesion between the plastic surface matrix and the coating, difficult waste water treatment, loose coating, etc. To achieve the effect of simplifying the electroplating process, reducing environmental and human pollution, and high adhesion

Inactive Publication Date: 2015-04-08
南通创源电化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a result of the activation pretreatment technology obtained by these methods, the adhesion between the plastic surface substrate and the coating is not strong, and the coating still often suffers from loosening, bubbling, and peeling after electroplating.
In order to prevent these coatings with poor appearance, after electroless plating, brushing treatment is used, and then electroplating is carried out. The process is more complicated.
In addition, the paraformaldehyde contained in the electroless copper plating solution is a potential carcinogenic toxic substance, and because of the use of complexing agents such as EDTA with strong complexing ability to complex copper ions, it is quite difficult to treat wastewater.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A plastic electroplating method for connecting rod bearings in automobile parts, comprising sequentially performing chemical degreasing, roughening, reduction, pre-soaking, palladium activation, debonding, electroless nickel plating, pre-plating copper, acid copper plating, semi-gloss nickel plating, Steps of bright nickel plating, nickel seal, chrome plating.

[0023] Specifically, the reagents and their respective usage amounts in the chemical degreasing step are set as follows: sodium carbonate 50g / L, sodium phosphate 50g / L, set temperature 50°C, time 4min;

[0024] In the coarsening step, the reagents and their respective consumptions are set as follows: 380 g / L of chromic anhydride and 380 g / L of sulfuric acid are added successively, and the reagents and their respective usages are set as: hydrazine hydrate 5 ml / L, hydrochloric acid 60 ml / L in the reduction step , the reduction time is 1min.

[0025] In the presoaking step, the reagents and their respective...

Embodiment 2

[0038] A plastic electroplating method for an oil pan in an automobile part, comprising sequentially performing chemical degreasing, roughening, reduction, pre-soaking, palladium activation, debonding, electroless nickel plating, pre-plating copper, acid copper plating, semi-gloss nickel plating, Steps of bright nickel plating, nickel seal, chrome plating.

[0039] In the chemical degreasing step, the reagents and their respective consumption are set as follows: sodium carbonate 60g / L, sodium phosphate 60g / L, set temperature 70°C, time 6min;

[0040] In the coarsening step, the reagents and their respective consumptions are set as follows: add chromic anhydride 420g / L, sulfuric acid 420g / L,

[0041] The reagents and their respective consumptions in the reduction step are set as follows: hydrazine hydrate 10ml / L, hydrochloric acid 60ml / L, and the reduction time is 3min.

[0042] In the presoaking step, the reagents and their respective dosages are set as follows: add concentra...

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Abstract

The invention discloses a plastic plating method for an automobile component. The plastic plating method for the automobile component is characterized by comprising the steps of chemical degreasing, coarsening, restoring, presoaking, palladium exciting, peptizing, chemical nickel-plating, copper pre-plating, acid-copper-plating, si-bright nickel plating, bright nickel plating, nickel sealing, and chromium plating. The adhesive force of the plastic surface substrate and the plating layer of the automobile component is high, the thickness of the penetration is up to 0.003-0.12 mm, and 0.003-0.12 mm of thicker metal layer is embedded in the plastic surface layer, so that the metal layer is tightly adhered to the plastic substrate, and the phenomenon of loosening, bubbling, peeling and the link of the plating layer is avoided after plating, the surface durability of the product is prolonged, and the product is smooth and has the metallic texture.

Description

technical field [0001] The invention relates to a plastic electroplating method for automobile parts, which belongs to the technical field of electroplating industry. Background technique [0002] In recent years, with the rapid development of the automobile industry, electrical industry, household appliances, and jewelry industries, the technology of electroplating metal on plastic surfaces has also continued to develop. The plastic products after electroplating integrate the characteristics of plastic and metal. Not only the appearance can be beautifully decorated, but also the physical and mechanical properties of the products are greatly improved, and new characteristics such as electrical conductivity, magnetic conductivity, and welding are endowed. Therefore, plastic electroplating has become an important process for plastic decoration. If metal is electroplated on the plastic surface, the plastic surface must first have a conductive film—the plastic surface is metall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/56C25D5/14C23C28/02C25D3/04C25D3/12C25D3/38
Inventor 沈宇张健
Owner 南通创源电化学科技有限公司
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