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Ammonium nitrogen-free electrolysis releasing agent and application method thereof

A technology without ammonia nitrogen and pendants, applied in the field of metal plating electrolysis, can solve the problems of easy pollution of the environment, difficult treatment of wastewater, a large amount of yellow smoke, etc., and achieve the effects of simple wastewater treatment, reduced pollution, and high stripping efficiency

Active Publication Date: 2019-10-08
深圳市恒享表面处理技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When plating copper, nickel, chromium, etc. on the surface of the workpiece, it is often necessary to use a stainless steel hanger to hang the workpiece or place the workpiece on a stainless steel plate to facilitate the operator to spray the coating on the workpiece. Therefore, the stainless steel hanger or stainless steel plate The metal coating is often accidentally sprayed, and the coating on the surface needs to be removed from time to time. The traditional cleaning method is to use nitric acid to deplate, but it will produce a lot of yellow smoke. The existing electrolytic decoupling water and electrolytic decoupling Because the powder contains nitrate, ammonium salt, etc., the discharged wastewater is difficult to treat, and it is easy to pollute the environment if used in large quantities for a long time.

Method used

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  • Ammonium nitrogen-free electrolysis releasing agent and application method thereof
  • Ammonium nitrogen-free electrolysis releasing agent and application method thereof
  • Ammonium nitrogen-free electrolysis releasing agent and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An ammonia-nitrogen-free electrolysis release agent, which comprises a water solvent and the following raw materials in parts by weight:

[0025]

[0026]

[0027] Specifically, the mass concentration of the electrolytic release agent is 116 g / L. The pH of the electrolytic release agent is 4-6.

[0028] Wherein, the complexing agent is sodium gluconate; the conductive salt is sodium sulfate.

[0029] The preparation method of the electrolytic release agent is as follows: in parts by weight, first add 100 parts of water to the container, and then sequentially add 20 parts of complexing agent, 30 parts of conductive salt, 50 parts of sodium persulfate, 1 part of 2- The o-toluenethiourea and 15 parts of sodium carbonate are stirred and dissolved, and finally water is added until the mass concentration of the solution is 116g / L.

[0030] A method for using an ammonia-nitrogen-free electrolytic stripping agent includes the following steps:

[0031] A. Put the stainless steel pendant...

Embodiment 2

[0035] An ammonia-nitrogen-free electrolysis release agent, which comprises a water solvent and the following raw materials in parts by weight:

[0036]

[0037]

[0038] Wherein, the complexing agent is sodium citrate; the conductive salt is potassium sulfate. The mass concentration of the electrolytic release agent is 80.5 g / L. The pH of the electrolytic release agent is 4.

[0039] The preparation method of the electrolytic release agent is as follows: in parts by weight, first add 100 parts of water to the container, and then sequentially add 10 parts of complexing agent, 20 parts of conductive salt, 40 parts of sodium persulfate, 0.5 parts of 2- The o-toluene thiourea and 10 parts of sodium carbonate are stirred and dissolved, and finally water is added until the mass concentration of the solution is 80.5g / L.

[0040] A method for using an ammonia-nitrogen-free electrolysis release agent, which includes the following steps:

[0041] A. Put the stainless steel pendant to be depl...

Embodiment 3

[0045] An ammonia-nitrogen-free electrolysis release agent, which comprises a water solvent and the following raw materials in parts by weight:

[0046]

[0047]

[0048] The complexing agent is potassium sodium tartrate. The conductive salt is sodium sulfate. The mass concentration of the electrolytic release agent is 151.5 g / L. The pH of the electrolytic stripping agent is 6.

[0049] The preparation method of the above electrolytic release agent is as follows: first add 100 parts of water to the container, and then add 30 parts of complexing agent, 40 parts of conductive salt, 60 parts of sodium persulfate, 1.5 parts of 2-ortho Toluene thiourea and 20 parts of sodium carbonate are stirred and dissolved, and finally water is added until the mass concentration of the solution is 151.5g / L.

[0050] The method of using the above-mentioned ammonia-nitrogen-free electrolysis release agent includes the following steps:

[0051] A. Put the stainless steel pendant to be deplated into the...

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Abstract

The invention relates to the technical field of metal plating layer electrolysis, in particular to an ammonium nitrogen-free electrolysis releasing agent and an application method thereof. The ammonium nitrogen-free electrolysis releasing agent comprises water solvent and the following raw materials in parts by weight: 40-60 parts of sodium persulfate, 10-30 parts of complexing agent, 10-20 partsof sodium carbonate, 20-40 parts of electric conducting salt, and 0.5-1.5 parts of 2-o-toluene thiourea. The ammonium nitrogen-free electrolysis releasing agent achieves an excellent deplating effecton copper nickel plating layer; the deplating efficiency is high; and the deplating speed is 15-20 microns / minute.

Description

Technical field [0001] The invention relates to the technical field of electrolysis of metal coatings, in particular to an ammonia-nitrogen-free electrolysis release agent and a method of use thereof. Background technique [0002] When plating the surface of the workpiece with copper, nickel, chromium, etc., it is often necessary to hang the workpiece with a stainless steel hanger or place the workpiece on a stainless steel plate to facilitate the operator to spray the coating on the workpiece. Therefore, the stainless steel hanger or the stainless steel plate Metal coating is often accidentally sprayed on, and the coating on the surface needs to be removed from time to time. The traditional removal method is deplating with nitric acid, but a large amount of yellow smoke will be generated. However, the existing electrolytic decoating water and electrolytic decoating Because the powder contains nitrate, ammonium salt, etc., the discharged waste water is difficult to treat, and it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F5/00
CPCC25F5/00
Inventor 程海
Owner 深圳市恒享表面处理技术有限公司
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