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Barrel plating method and activation solution for stainless steel products

A technology for stainless steel and products, applied in liquid chemical plating, metal material coating process, coating, etc., can solve the problem of poor bonding between the substrate and nickel plating layer of stainless steel nickel plating products, and the fluctuation of plating thickness and surface quality Large and high returns and rework risks, etc., achieve simple and labor-saving barrel plating operations, improve coating thickness and surface quality uniformity, and increase the number of activated molecules

Active Publication Date: 2022-01-04
惠州市安泰普表面处理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rack plating needs to clip or tie the parts one by one to the rack, which is time-consuming, laborious, and labor-intensive, and the quality of the coating is not good, such as "hanger marks", insufficient surface finish, and the thickness and surface of each nickel-plated product. Large fluctuations in quality, etc.
[0004] The substrate of stainless steel nickel-plated finished product has poor combination with the nickel-plated layer. About 1% of stainless steel nickel-plated finished product will appear peeling and blistering. The NG test of Baige will have a great impact on product quality and has a relatively high impact on product quality. High return and rework risk

Method used

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  • Barrel plating method and activation solution for stainless steel products
  • Barrel plating method and activation solution for stainless steel products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0034] For an implementation, see figure 1 , a stainless steel product barrel plating method, comprises the following steps:

[0035] S110, pouring a degreasing solution into the degreasing tank, putting the stainless steel product to be plated into the degreasing tank, and performing immersion and degreasing operation.

[0036] It should be noted that the immersion degreasing operation uses the emulsification of the degreasing liquid to degrease the stainless steel product to be plated.

[0037] S120, putting the stainless steel product to be plated into the electrolytic tank, performing cathodic electrolytic degreasing operation, and then performing anode electrolytic degreasing operation.

[0038]It should be noted that the cathodic electrolytic degreasing operation and the anode electrolytic degreasing operation are performed in an alkaline solution, with the stainless steel product to be plated as the anode or cathode, and a stainless steel plate, nickel plate, nickel-pl...

Embodiment 1

[0068] S111, pouring naphtha into the degreasing tank, putting 100 identical stainless steel products to be plated into the degreasing tank, and performing immersion degreasing operation.

[0069] S121, putting the 100 identical stainless steel products to be plated into the electrolytic tank, performing cathodic electrolytic degreasing operation, and then performing anode electrolytic degreasing operation.

[0070] S131, injecting phosphoric acid into the pickling tank, putting the 100 identical stainless steel products to be plated into the pickling tank, and performing pickling operation.

[0071] S141, for 15g / L sodium peroxide, 10g / L ammonium bifluoride, 3g / L acetic acid and 8g / L glycerin, add water to make up the volume of the solution to 1L, and then carry out stirring operation so that the components are mixed evenly and activated The activation solution is passed into the activation tank, and the 100 identical stainless steel products to be plated are put into the act...

Embodiment 2

[0075] S112, feeding trichlorethylene into the degreasing tank, putting 100 pieces of the same stainless steel products to be plated into the degreasing tank, and performing immersion degreasing operation.

[0076] S122, putting the 100 identical stainless steel products to be plated into the electrolytic tank, performing cathodic electrolytic degreasing operation, and then performing anode electrolytic degreasing operation.

[0077] S132, passing hydrochloric acid into the pickling tank, putting the 100 identical stainless steel products to be plated into the pickling tank, and performing pickling operation.

[0078] S142, for 20g / L ozone, 5g / L ammonium bifluoride, 5g / L hydrochloric acid and 3g / L hexamethylenetetramine, add water to make up the volume of the solution to 1L, and then perform stirring operation to make the components mix evenly , to obtain an activation solution, pass the activation solution into the activation tank, and put the 100 identical stainless steel pr...

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Abstract

The invention relates to the field of electroless nickel plating methods, and discloses a barrel plating method for stainless steel products and an activation solution. The barrel plating method includes the following steps: soaking and degreasing operation; electrolytic degreasing operation; pickling operation; strong oxidant and ammonium bifluoride , strong acid agent and corrosion inhibitor, and carry out stirring operation so that each component is mixed uniformly to obtain an activation solution, wherein, the mass ratio of strong oxidant, ammonium bifluoride, strong acid agent and corrosion inhibitor is (15~20): (5 ~10):(3~5):(3~8); put the activation solution into the activation tank, put the stainless steel product to be plated into the activation tank, and perform the activation operation; pre-nickel plating operation; Put the stainless steel product to be plated into the perforated drum by rotating motion, and put the electroless nickel plating solution into the chemical nickel plating tank for barrel plating operation to obtain the stainless steel nickel plated product. The invention can improve the combination between the substrate and the nickel layer, and improve the thickness of the plating layer and the uniformity of the surface quality.

Description

technical field [0001] The invention relates to the field of electroless nickel plating methods, in particular to a barrel plating method for stainless steel products and an activation solution. Background technique [0002] Electroless nickel plating is a method of depositing a layer of nickel on the surface of metal parts by redox action 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 parts to be plated are immersed in a mixed solution made of nickel sulfate, sodium dihydrogen hypophosphite, sodium acetate and boric acid, and changes occur at a certain acidity and temperature, and the nickel ions in the solution are reduced by sodium dihydrogen hypophosphite It is deposited on the surface of the workpiece for atoms, forming a fine and bright nickel coating. Steel parts can be directly nickel-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36
CPCC23C18/36C23C18/1848C23C18/1844C23C18/1632
Inventor 谢彪
Owner 惠州市安泰普表面处理科技有限公司
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