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A kind of plating solution and method of electroless pearl nickel plating

A technology of electroless plating solution and pearl nickel, which is applied in the direction of liquid chemical plating, metal material coating process, coating, etc., can solve the problems of monotonous preparation method of pearl nickel and uneven coating, and achieve low cost, uniform coating, The effect of high utilization

Active Publication Date: 2020-11-24
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a plating solution and method for preparing pearl nickel by electroless plating, which solves the problems of monotonous preparation method of pearl nickel and uneven coating

Method used

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  • A kind of plating solution and method of electroless pearl nickel plating
  • A kind of plating solution and method of electroless pearl nickel plating
  • A kind of plating solution and method of electroless pearl nickel plating

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specific Embodiment approach 1

[0018] Specific embodiment one: a kind of plating solution and the method of electroless pearl nickel plating of the present embodiment are carried out according to the following steps:

[0019] 1. Preparation of alkali washing solution: Dissolve sodium hydroxide, sodium phosphate, sodium silicate, sodium carbonate and sodium lauryl sulfate in deionized water and set aside;

[0020] 2. Preparation of pre-plating solution: Dissolve zinc oxide, zinc dihydrogen phosphate, phosphoric acid, citric acid, sodium fluoride, sodium dodecylbenzenesulfonate, and sodium molybdate in deionized water, and adjust the pH for later use;

[0021] 3. Preparation of chemical plating solution:

[0022] (1) Acidic chemical plating solution: Dissolve nickel sulfate, sodium hypophosphite, citric acid, anhydrous sodium acetate, sodium chloride, emulsifier OP-10, potassium iodate, and sodium dihexyl succinate sulfonate In deionized water, adjust the pH before use;

[0023] (2), alkaline chemical plati...

specific Embodiment approach 2

[0025] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the alkali washing liquid degreasing process described in step 1 is to remove saponifiable grease through the saponification and emulsification of lye, and the mechanism of soaking and wetting to achieve degreasing The purpose of its alkaline lotion formula is sodium hydroxide 90g / L, sodium phosphate 30g / L, sodium silicate 20g / L, sodium carbonate 20g / L, sodium lauryl sulfate 0.02g / L, add deionized In water, dissolve it. Others are the same as the first embodiment.

specific Embodiment approach 3

[0026] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the formula and surface pre-plating process of the pre-plating solution described in step two are: preparing zinc oxide 12g / L, zinc dihydrogen phosphate 10g / L, 150ml solution of phosphoric acid 30mL / L, citric acid 0.5g / L, sodium fluoride 0.4g / L, sodium dodecylbenzenesulfonate 0.3g / L, sodium molybdate 1g / L in a 250mL beaker; Concentrated ammonia water was added dropwise to adjust the pH to 2.5. Finally, the activated steel sheet was immersed in the treatment solution for reaction. After 15 minutes of reaction, it was taken out, and the surface was rinsed with deionized water and dried for later use. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to plating liquid for chemically plating pearl nickel and a method and relates to a pretreatment method for a low-carbon steel piece and a preparation method of plating liquid for chemically plating pearl nickel. According to the plating liquid and the method, the problems that instruments are complex, the operation is accurate and is difficult to control, the uniformity of aplated layer is poor and the like in a traditional preparation method of pearl nickel are solved. The pretreatment method comprises the following steps: (1) preparing alkaline wash liquid; (2) preparing surface pre-plating liquid; (3) preparing a chemical plating liquid; and (4) carrying out preparation process flows of pearl nickel: acid pickling for removing rust, mechanical polishing, water washing, alkaline wash for removing oil, acid pickling for activation, water washing, blow-drying, pre-plating and chemical plating. The plated layer of the prepared pearl nickel is uniform, meanwhile,the consumption in the process is reduced, and the energy conservation and the emission reduction are realized.

Description

technical field [0001] The invention relates to a pearl nickel plating process and a plating solution, in particular to a plating solution and a method for electroless pearl nickel plating. Background technique [0002] Electroless nickel plating is a method of depositing a layer of nickel on the surface of metal parts by redox without external current. Used to improve corrosion and abrasion resistance, increase gloss and aesthetics. Bright nickel plating suitable for tubular or small parts with complex shapes without further polishing. Generally, the workpiece to be plated is immersed in a mixed solution made of nickel sulfate, sodium hypophosphite, sodium acetate and boric acid, and changes at a certain acidity and temperature, and the nickel ions in the solution are reduced to atoms by sodium hypophosphite And deposited on the surface of the workpiece, forming a fine and bright nickel coating. [0003] Pearl nickel is also known as satin nickel, satin nickel, etc. Bec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36C23C18/18
CPCC23C18/1844C23C18/36
Inventor 李丽波翟墨赵耀谢明
Owner HARBIN UNIV OF SCI & TECH
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