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Chrome electroplating solution formula and method

A technology of electroplating chromium and solution, applied in the field of metal electroplating, can solve the problems of low electroplating efficiency, difficult control, poor stability of plating solution, poor surface brightness, etc., and achieves the effects of low cost, fast crystallization speed and good bonding strength

Inactive Publication Date: 2013-06-26
李平
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Chromium has high hardness, corrosion resistance and excellent wear resistance, and is widely used in various industries such as decoration and surface treatment of wear-resistant parts. However, the current chromium plating solution has low bonding strength, busy crystallization speed, poor surface brightness, and Poor stability, short service life and frequent replacement. The chromium plating process is mainly based on hexavalent chromium plating technology containing toxic substances, which has low plating efficiency and difficult control

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0009] A kind of electroplating solution formula and method, comprise following composition by weight ratio, sodium sulfate 15g / L, boric acid 20g / L, aluminum sulfate 15g / L, sodium lauryl sulfate 1.5g / L, succinic acid 15g / L L, oxalic acid 3g / L, nitrilotriacetic acid 5g / L and the remaining water are fully stirred.

[0010] The method is as follows: 1. Cleaning, derusting and impurity removal before plating, 2. Activation, 3. Electroplating, the temperature is 30°C, and the current density is 20A / dm 2 , PH value 1.5, plating time 2 hours, 4, washing and drying.

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Abstract

The invention discloses a chrome electroplating solution formula and method. The chrome electroplating solution comprises 5-20 g / L sodium sulfate, 15-50 g / L boric acid, 5-30 g / L aluminum sulfate, 0.5-2 g / L sodium lauryl sulfate, 5-40 g / L succinic acid, 1-10 g / L oxalic acid, 3-15 g / L nitrilotriacetic acid and the balance of water. The method comprises the following steps: 1. before plating, cleaning, derusting and removing impurities; 2. activating; 3. electroplating, wherein the temperature is 25-30 DEG C, the current density is 10-30 A / dm<2>, the pH value is 1-2, and the electroplating time is 1-3 hours; and 4. washing with water, and drying. The chrome electroplating solution has the advantages of reasonable formula, high crystallization rate, high efficiency, high bonding strength of the coating, high surface smoothness and high stability; and the method is reasonable, low in cost and simple to operate.

Description

technical field [0001] The invention belongs to the technical field of metal electroplating, and in particular relates to a formula and a method for an electroplating chromium solution. Background technique [0002] Chromium has high hardness, corrosion resistance and excellent wear resistance, and is widely used in various industries such as decoration and surface treatment of wear-resistant parts. However, the current chromium plating solution has low bonding strength, busy crystallization speed, poor surface brightness, and The stability is poor, the service life is short, and frequent replacement is required. The chromium plating process is mainly based on hexavalent chromium plating technology containing toxic substances, and it is difficult to control the low plating efficiency. Contents of the invention [0003] The object of the present invention is to provide a kind of electroplating solution formulation and method with reasonable formula, good product quality, go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/04
Inventor 李平
Owner 李平