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Electroplating method for automobile trunk decoration strip

A technology for trunks and decorative strips, which is applied in jewelry and other fields, and can solve problems such as poor coating ability, blistering, and inadequate plastic surface treatment.

Inactive Publication Date: 2017-10-13
珠海市春生五金工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the plated parts pass through each electroplating tank equipped with different electroplating solutions, and different electroplating processes are carried out for different products. However, the electroplating process of the trim strip of the automobile trunk has the following defects: the adaptability of the electroplating process is not good. Well, the plastic surface treatment before electroplating is not in place, resulting in unstable and uneven coating, poor deep plating ability of coating, brittle coating, wrinkling, blistering, delamination and cracking, and short service life

Method used

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  • Electroplating method for automobile trunk decoration strip
  • Electroplating method for automobile trunk decoration strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, the automobile trunk decorative strip electroplating method of the present invention comprises the following steps:

[0034] 1. Pretreatment before electroplating

[0035] The substrate to be electroplated is pre-treated for electroplating, and the following steps are performed in sequence:

[0036] (1) Ultrasonic wax removal: Soak the parts to be plated in a wax removal solution at a temperature of 55°C-65°C (a wax remover with a concentration of 20ml / L-40ml / L) for 3min-5min.

[0037] (2) Ultrasonic degreasing: Put the parts to be plated into the degreasing liquid in the ultrasonic device. The degreasing liquid includes the following components: 1mol / L sodium hydroxide, 1mol / L sodium carbonate and 0.1mol / L dodecane Sodium sulfonate; soak the two-color plastic for 5 minutes at the temperature of the degreasing solution at 50°C, take it out and wash it with tap water.

[0038] (3) Pre-roughening: Soak the parts to be plated after cleaning in the above ste...

Embodiment 2

[0067] Prepare the plated part Y2 according to the method of Example 1, the difference is that the temperature of the electroplating solution in the Watt nickel plating is 50°C, the electroplating time is 10min, and the electroplating voltage is 3.5V;

[0068] The temperature of the electroplating solution in acid copper plating is 22°C, the electroplating time is 40min, and the electroplating steady current is 720A;

[0069] The temperature of the electroplating solution in semi-gloss nickel plating is 50°C, the electroplating time is 30minmin, and the electroplating steady current is 810A;

[0070] The temperature of the electroplating solution in the secondary high-sulfur nickel plating is 55°C, the electroplating time is 5min, and the electroplating steady flow is 720-A;

[0071] The temperature of the electroplating solution in the bright nickel plating is 50°C, the electroplating time is 20min, and the electroplating steady current is 630A;

[0072] The temperature of t...

Embodiment 3

[0075] Prepare the plated part Y3 according to the method of Example 1, the difference is that the temperature of the electroplating solution in the Watt nickel plating is 60°C, the electroplating time is 12min, and the electroplating voltage is 4.5V;

[0076] The temperature of the electroplating solution in acid copper plating is 28°C, the electroplating time is 48min, and the electroplating steady current is 880A;

[0077] The temperature of the electroplating solution in semi-gloss nickel plating is 60°C, the electroplating time is 36min, and the electroplating steady current is 990A;

[0078] The temperature of the electroplating solution in the secondary high-sulfur nickel plating is 65°C, the electroplating time is 6min, and the electroplating steady current is 880A;

[0079] The temperature of the electroplating solution in the bright nickel plating is 60°C, the electroplating time is 24min, and the electroplating steady current is 770A;

[0080] The temperature of th...

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Abstract

The invention provides an electroplating method for a trim strip of an automobile trunk, which includes electroplating pretreatment and electroplating, wherein the electroplating pretreatment includes performing the following steps in sequence: ultrasonic wax removal, ultrasonic oil removal, pre-roughening, hydrophilic treatment, roughening treatment, Neutralization treatment, surface adjustment treatment, pre-soaking treatment, activation, acid solution glue, alkali solution glue, electroless nickel plating; electroplating the substrate that has completed the electroplating pretreatment, electroplating includes performing the following steps in sequence: watt nickel plating, Acid copper plating, primary high-sulfur nickel plating, semi-gloss nickel plating, secondary high-sulfur nickel plating, light nickel plating, primary microporous nickel plating, pre-plating nickel plating, pearl nickel plating, secondary microporous nickel plating, triple plating Valence white chromium, trivalent black chromium plating, electrolytic activation, chrome plating, and passivation treatment. The process coefficients in each step are controlled to make the coating of the obtained plated parts stable and uniform, so that the coating is stable and not brittle, and the plating The parts are not prone to wrinkling, foaming, delamination and cracking, and have good corrosion resistance and strength.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to an electroplating method for an automobile trunk device strip. Background technique [0002] Electroplating is the process of plating a layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. During electroplating, the plated metal is the anode in the electrolytic cell, and the plated metal is oxidized into cations and enters the electroplating solution; the metal product to be plated is the cathode, and the cations of the plated metal are reduced on the metal surface to form a plated layer. In order to eliminate the interference of other cations and make the coating uniform and firm, it is necessary to use a solution containing metal cations as the electroplating solution to keep the concentration of metal cations on the coating constant. [0003] The purpose of electroplating is to plate a metal coating on the substrate to b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/14C25D5/56C25D7/00
CPCC25D5/14C25D5/56C25D7/00
Inventor 吴润丰李家豪
Owner 珠海市春生五金工业有限公司
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