Iron substrate plating neutral stripping agent

A technology of stripping agent and substrate, which is applied in the field of neutral stripping agent for iron substrate coating, can solve the problems of short service life, high electrolysis energy consumption, and difficulty in completely stripping hangers, and achieve simple and convenient maintenance and operation, shortened production cycle, and improved The effect of stripping rate

Active Publication Date: 2016-03-16
惠州市博美新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter uses strong corrosive agents such as nitric acid to peel off the coating, which is likely to produce a large amount of exhaust gas to pollute the air, cause acid rain, and is easy to corrode the hook, which will damage the hanger and shorten the service life.
And the reagents such as decoupling water used in large quantities are also likely to cause serious environment...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a neutral stripping agent for iron substrate plating, and the raw materials per liter include:

[0028] Oxidizing agent 120g;

[0029] Buffer 13g;

[0030] 15g of the first complexing agent;

[0031] The second complexing agent 4g;

[0032] The first corrosion inhibitor 12g;

[0033] The second corrosion inhibitor 3g;

[0034] And the balance of deionized water;

[0035] Wherein, the oxidant is nitrate, the first complexing agent is citrate, the second complexing agent is potassium sodium tartrate, the first corrosion inhibitor is glucose, and the second corrosion inhibitor is hexamethylenetetramine. amine.

[0036] The oxidant is calcium nitrate, the first complexing agent is ferric ammonium citrate; the neutral stripping agent for iron matrix plating also includes 0.5 wt% mannitol and 0.01 wt% sodium diacetate.

[0037] Further, the preparation method is:

[0038] S1. Heat deionized water to 85°C, add the oxidizer, buffer, and second complexing agent in sequ...

Embodiment 2

[0041] This embodiment provides a neutral stripping agent for iron substrate plating, and the raw materials per liter include:

[0042] 160g of oxidant;

[0043] Buffer 10g;

[0044] The first complexing agent 20g;

[0045] The second complexing agent 3g;

[0046] 15g of the first corrosion inhibitor;

[0047] The second corrosion inhibitor 2g;

[0048] And the balance of deionized water;

[0049] Wherein, the oxidant is nitrate, the first complexing agent is citrate, the second complexing agent is potassium sodium tartrate, the first corrosion inhibitor is glucose, and the second corrosion inhibitor is hexamethylenetetramine. amine.

[0050] The oxidant is calcium nitrate, and the first complexing agent is ferric ammonium citrate; the neutral stripping agent for iron matrix plating also includes 0.8 wt% of mannitol and 0.01 wt% of sodium diacetate.

Embodiment 3

[0052] This embodiment provides a neutral stripping agent for iron substrate plating, and the raw materials per liter include:

[0053] Oxidizer 90g;

[0054] Buffer 15g;

[0055] The first complexing agent 8g;

[0056] The second complexing agent 5g;

[0057] The first corrosion inhibitor 6g;

[0058] The second corrosion inhibitor 5g;

[0059] And the balance of deionized water;

[0060] Wherein, the oxidant is nitrate, the first complexing agent is citrate, the second complexing agent is potassium sodium tartrate, the first corrosion inhibitor is ribose, and the second corrosion inhibitor is hexamethylenetetramine. amine.

[0061] The oxidizing agent is sodium nitrate, the first complexing agent is potassium citrate; the neutral stripping agent for iron matrix plating also includes 0.2wt% mannitol and 0.02wt% sodium diacetate.

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PUM

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Abstract

The invention discloses an iron substrate plating neutral stripping agent. Nitrate is optimally selected as an oxidizing agent for stripping nickel, chromium, copper, tin and other plating on an iron 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 iron 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 particularly, calcium nitrate is optimally as the oxidizing agent, and ammonium ferric citrate is adopted as a first complexing agent, and calcium nitrate and ammonium ferric citrate are combined with mannitol and sodium diacetate, so that the stripping rate of the nickel plating on the iron substrate can be effectively increased. 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 stripper for iron matrix 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 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 rack is generally made of metal such as iron and stainless steel. During electroplating, the current is discharged at the hook tip of the rack and the electroplated product to deposit nickel, chromium, copper, tin, zinc and other plating layers. The electroplating layer affects the conductivity of the hook and the e...

Claims

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Application Information

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IPC IPC(8): C23F1/14C23F11/10
Inventor 叶洪城叶洪源
Owner 惠州市博美新材料科技有限公司
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