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Pretreatment technology for electroplating of automobile door handle

A door handle and pre-treatment technology, which is applied in the field of pre-treatment process of automobile door handle electroplating, can solve the problems affecting the appearance effect and adhesion of electroplating, and easily corroded substrates, so as to improve the appearance effect, good adhesion, and good metal texture effect

Inactive Publication Date: 2016-09-21
南通柏源汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a pretreatment process for the electroplating of automobile door handles. This pretreatment process solves the problem that the existing electroplating pretreatment activation process is easy to corrode the base material and seriously affects the appearance effect and adhesion of electroplating. , to ensure that the car door handle has good adhesion during electroplating treatment, so that the car door handle presents an excellent metal texture after electroplating, which improves the appearance effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The pretreatment process of the electroplating of the automobile door handle in this embodiment, the specific steps of the pretreatment process are as follows:

[0021] (1) Degreasing: Ultrasonic degreasing is performed on the surface of the injection-molded automobile door handle. The ultrasonic degreasing uses degreasing powder with a concentration of 6g / L, the degreasing temperature is 50°C, and the degreasing time is 4 minutes; then wash three times with water, Then by soaking in sulfuric acid, the concentration of the sulfuric acid is 100ml / L, and the soaking time is 3min;

[0022] (2) Coarsening: Send the degreased car door handle into the first roughening tank for primary roughening, then into the second roughening tank for secondary roughening, and then put it into the cleaning tank Spray washing with pure water, and finally send it to the high-level water washing tank for high-level water washing; the primary roughening temperature is 68°C, the roughening time ...

Embodiment 2

[0029] The pretreatment process of the electroplating of the automobile door handle in this embodiment, the specific steps of the pretreatment process are as follows:

[0030] (1) Degreasing: Ultrasonic degreasing is performed on the surface of the injection-molded automobile door handle. The ultrasonic degreasing uses degreasing powder with a concentration of 8g / L, the degreasing temperature is 60°C, and the degreasing time is 2min; then wash with water three times, Then by soaking in sulfuric acid, the concentration of the sulfuric acid is 120ml / L, and the soaking time is 1min;

[0031] (2) Coarsening: Send the degreased car door handle into the first roughening tank for primary roughening, then into the second roughening tank for secondary roughening, and then put it into the cleaning tank Spray wash with pure water, and finally send it into the high-level water washing tank for high-level water washing; the primary roughening temperature is 72°C, the roughening time is 4.5...

Embodiment 3

[0038] The pretreatment process of the present embodiment automobile door handle electroplating, the concrete steps of this pretreatment process are as follows:

[0039] (1) Degreasing: Ultrasonic degreasing is performed on the surface of the injection-molded automobile door handle. The ultrasonic degreasing uses degreasing powder with a concentration of 7g / L, the degreasing temperature is 55°C, and the degreasing time is 3 minutes; then wash with water three times, Then by soaking in sulfuric acid, the concentration of the sulfuric acid is 110ml / L, and the soaking time is 2min;

[0040] (2) Coarsening: Send the degreased car door handle into the first roughening tank for primary roughening, then into the second roughening tank for secondary roughening, and then put it into the cleaning tank Spray wash with pure water, and finally send it to the high-level water washing tank for high-level water washing; the primary roughening temperature is 70°C, the roughening time is 5.5min, ...

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Abstract

The present invention relates to a pretreatment process of electroplating for automobile door handles. The pretreatment process includes seven processes of degreasing, roughening, reduction, pre-soaking, activation, degumming and electroless nickel plating. Secondary roughening, and increase the roughening concentration, reduction concentration and pre-dipping concentration; and the activation solution is a mixture of hydrochloric acid, metal palladium and stannous chloride. The invention has the advantages that: the pretreatment process solves the problem that the existing electroplating pretreatment activation process is easy to corrode the base material, which seriously affects the appearance effect and adhesion of electroplating, and ensures that the automobile door handle has good adhesion during electroplating treatment , so that the car door handle shows an excellent metal texture after electroplating, which improves the appearance effect.

Description

technical field [0001] The invention belongs to the technical field of electroplating, in particular to a pretreatment process for electroplating an automobile door handle. Background technique [0002] Electroplating is the process of plating a thin layer of other metals or alloys on the surface of the base material using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts to prevent metal oxidation (such as rust), improve wear resistance, electrical conductivity, reflective properties, corrosion resistance (acid sulfur copper, etc.) and enhance the appearance. [0003] The car door handle is composed of a handle and a door lock cover that cooperates with the handle. These two parts together form the outer door handle of the car. In the production of automobile door handles, the automobile door handles need to be electroplated, and pretreatment is often required before electrop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/56C23C18/20C23C18/24C23C18/30
CPCC25D5/56C23C18/2073C23C18/24C23C18/285C23C18/30
Inventor 沈宇李智
Owner 南通柏源汽车零部件有限公司
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