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Environment-friendly stainless steel substrate plating stripping agent

A stainless steel stripping agent technology, applied in the field of coating stripping agent, can solve the problems of corroding stainless steel substrate, affecting the use effect, rough surface of the substrate, etc., and achieve the effects of shortened production cycle, no pollution, and simple and convenient maintenance and operation

Inactive Publication Date: 2016-03-16
HUIZHOU CITY HIROMI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially the nickel coating, because the stainless steel itself contains a small amount of nickel, it is often difficult to completely strip the nickel coating with the existing technology, and the stripping agent is also easy to damage and corrode the stainless steel substrate, and the surface of the substrate after stripping is rough, which affects the use effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Present embodiment provides a kind of environmental protection type stainless steel substrate coating stripping agent, its raw material comprises by weight:

[0024] 110 parts of oxidizing agent;

[0025] 25 parts of buffer;

[0026] 33 parts of conductive salt;

[0027] 10 parts of complexing agent;

[0028] 4 parts of activator;

[0029] 12 parts of corrosion inhibitor;

[0030] Wherein, the oxidant is nitrate, the buffer is acetate, the conductive salt is sulfate, the complexing agent is citrate, the activator is potassium sodium tartrate, and the corrosion inhibitor For polyhydroxy aldehydes.

[0031] In this embodiment, the coating is a nickel coating; the corrosion inhibitor is L-glucose; the stainless steel is austenitic stainless steel; and the nitrate is ammonium nitrate.

[0032] The complexing agent is ferric ammonium citrate; the conductive salt is ferrous sulfate; the environmentally friendly stainless steel substrate coating stripper also includes 0....

Embodiment 2

[0034] Present embodiment provides a kind of environmental protection type stainless steel substrate coating stripping agent, its raw material comprises by weight:

[0035] 160 parts of oxidizing agent;

[0036] 20 parts of buffer;

[0037] 35 parts of conductive salt;

[0038] 8 parts of complexing agent;

[0039] 5 parts of activator;

[0040] 6 parts of corrosion inhibitor;

[0041] Wherein, the oxidant is nitrate, the buffer is acetate, the conductive salt is sulfate, the complexing agent is citrate, the activator is potassium sodium tartrate, and the corrosion inhibitor For polyhydroxy aldehydes.

[0042] In this embodiment, the coating is a nickel coating; the corrosion inhibitor is L-glucose; the stainless steel is austenitic stainless steel; and the nitrate is ammonium nitrate.

[0043] The complexing agent is ferric ammonium citrate; the conductive salt is ferrous sulfate; the environmentally friendly stainless steel substrate coating stripper also includes 0.8w...

Embodiment 3

[0045] Present embodiment provides a kind of environmental protection type stainless steel substrate coating stripping agent, its raw material comprises by weight:

[0046] 90 parts of oxidizing agent;

[0047] 36 parts of buffer;

[0048] 32 parts of conductive salt;

[0049] 20 parts of complexing agent;

[0050] 3 parts of activator;

[0051] 15 parts of corrosion inhibitor;

[0052] Wherein, the oxidant is nitrate, the buffer is acetate, the conductive salt is sulfate, the complexing agent is citrate, the activator is potassium sodium tartrate, and the corrosion inhibitor For polyhydroxy aldehydes.

[0053] In this embodiment, the coating is a nickel coating; the corrosion inhibitor is L-glucose; the stainless steel is austenitic stainless steel; and the nitrate is ammonium nitrate.

[0054] The complexing agent is ferric ammonium citrate; the conductive salt is ferrous sulfate; the environmentally friendly stainless steel substrate coating stripper also includes 0.2...

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PUM

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Abstract

The invention discloses an environment-friendly stainless steel substrate plating stripping agent. Nitrate is optimally selected as an oxidizing agent for stripping nickel, chromium, copper, tin, and other plating on a stainless steel substrate, and as generally, nitrate is relatively stable in property and relatively low in toxicity, so that when the stripping agent provided by the invention is used, exhaust gases and waste water are not generated, and the stripping agent is non-corrosive to a device and highly friendly to the environment; at the same time nitrate is matched with citrate, potassium sodium tartrate and a proper amount of polyhydroxyl aldehyde, so that the speed for stripping the nickel plating on the stainless steel substrate is effectively increased, the plating stripping is achieved in a short time, and the production cycle is shortened while the substrate is not damaged; and the stripping rate of the nickel plating on the stainless steel substrate can be effectively increased through the combination of mannitol and sodium diacetate. Relative to the prior art, the stripping agent has the advantages of being free of corrosion, poisonous gases and pollution, high in efficiency, environment-friendly in use, easy and convenient to maintain, and the like.

Description

technical field [0001] The invention relates to a coating stripper, in particular to a neutral stripping agent for a stainless steel substrate coating. Background technique [0002] Since the country implemented economic reform and opening up in 1978, my country's economy has undergone earth-shaking changes and has also achieved remarkable results. However, economic development is accompanied by serious environmental pollution, and the electroplating industry has also become a key target of governance. [0003] In the field of electroplating technology, a hanger is generally used to fix the product and immerse it in the plating solution to complete the electroplating process. The main body of the hanger is generally stainless steel, iron and other metals. During electroplating, the current discharges on the hook tip of the hanger and the electroplated product to deposit nickel, chromium, copper, tin, zinc and other coatings. The electroplating layer affects the conductivity...

Claims

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Application Information

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IPC IPC(8): C25F5/00
CPCC25F5/00
Inventor 叶洪城叶洪源
Owner HUIZHOU CITY HIROMI CHEM CO LTD
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