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A kind of stainless steel pickling passivation solution and preparation method thereof

A technology of pickling passivation and stainless steel, applied in the coating process of metal materials, etc., can solve the problems of harmfulness to the human body, strong irritating smell, environmental pollution, etc., and achieve the effects of pollution prevention, good emulsification performance, and small gaps

Active Publication Date: 2019-07-12
吉林省聚德管道有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a stainless steel pickling passivation solution that emits NO and produces acid mist when processing stainless steel, pollutes the environment, has a strong pungent smell, and is harmful to the human body. Chemical solution and preparation method thereof

Method used

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Examples

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Effect test

preparation example Construction

[0021] A preparation method for stainless steel pickling passivation solution, comprising the steps of:

[0022] In parts by mass, take 8~10 parts of auxiliary agent A, 4~5 parts of auxiliary agent B, 3~4 parts of auxiliary agent C, 3~4 parts of auxiliary agent D, 10~13 parts of citric acid, 6~9 parts Phosphoric acid, 2-3 parts of hydrogen peroxide, 10-15 parts of absolute ethanol, and 60-70 parts of deionized water were stirred and mixed for 2-3 hours to obtain a stainless steel pickling passivation solution.

Embodiment 1

[0024] Auxiliary A: Take cyclohexane and add chloroacetic acid and sodium hydroxide at a mass ratio of 10:3:5, keep at 60°C for 1 hour to obtain a mixed solution, then add 40% cyclohexane with a concentration of 0.005mol / L The cyclohexane solution of alkylethylenediamine was fed with nitrogen, heated to 85°C, stirred and mixed for 4 hours, centrifuged, and the supernatant was distilled under reduced pressure and dried to obtain a dry product, that is, additive A.

[0025] Auxiliary B: In parts by mass, mix 5 parts of manganese acetate, 1 part of polyethylene glycol, 15 parts of potassium permanganate, 1 part of cobalt nitrate, 0.5 parts of cerium nitrate, and 200 parts of distilled water, heat up to 60°C and keep One day, filter, take the filter residue, wash twice with distilled water, dry, crush through a 100-mesh sieve, and collect the sieved particles to obtain additive B.

[0026] Auxiliary C: Take styrene and divinylbenzene at a mass ratio of 5:6:2 and add 5% sodium hydr...

Embodiment 2

[0031] Auxiliary A: Take cyclohexane and add chloroacetic acid and sodium hydroxide at a mass ratio of 10:3:5, keep at 65°C for 1~2h to obtain a mixed solution, then add cyclohexane with a mass ratio of 60% to a concentration of 0.005mol / The cyclohexane solution of L-alkylethylenediamine was passed through nitrogen, heated to 90°C, stirred and mixed for 6 hours, centrifuged, and the supernatant was distilled under reduced pressure, dried to obtain a dry product, that is, additive A.

[0032] Auxiliary B: In parts by mass, mix 7 parts of manganese acetate, 2 parts of polyethylene glycol, 20 parts of potassium permanganate, 3 parts of cobalt nitrate, 1.2 parts of cerium nitrate, and 250 parts of distilled water, heat up to 70°C and keep After 2 days, filter, take the filter residue, wash 3 times with distilled water, dry, crush and pass through a 100-mesh sieve, and collect the sieved particles to obtain additive B.

[0033] Auxiliary C: Take styrene and divinylbenzene at a mass ...

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Abstract

The invention discloses stainless steel acid pickling passivation liquid and a preparing method thereof, and belongs to the technical field of metal passivation. Aggregate type micro balls are prepared with styrene, divinyl benzene and n-heptane as raw materials, ascending bubbles can be effectively pressed, since the gap between the balls is small, acid mist liquid drops formed through bubble explosion can be effectively covered, cavities are formed in the micro balls, the surface of a shell layer is closed, closed coverage can be achieved for the acid mist liquid drops and the bubbles, liquid drop diffusion can be effectively prevented, hydrogen and oxygen can be smoothly exhausted, and a certain restraint action is achieved for acid pickling acid mist. The stainless steel acid picklingpassivation liquid and the preparing method thereof solve the problems that when current stainless steel acid pickling passivation liquid treats stainless steel, NO is discharged, acid mist is generated, the environment is polluted, irritant smells are large, and harm is caused to human bodies.

Description

technical field [0001] The invention belongs to the technical field of metal passivation, and in particular relates to a stainless steel pickling passivation solution and a preparation method thereof. Background technique [0002] The stainless steel pickling passivation solution is a combination of foreign technologies, using environmentally friendly inorganic acid oxidants as the main agent, adding hydroxy acid compounds, high-efficiency corrosion inhibitors and fog inhibitors. It is a new high-tech material. It is widely used in the removal of rust, welding spots, oil stains, black and yellow oxide scales produced in the process of forming, assembly, welding, etc., and at the same time, it can comprehensively passivate stainless steel workpieces, greatly improving the corrosion resistance of stainless steel workpieces. Really achieve the effect of pickling and passivation in one. [0003] Stainless steel has the characteristics of good corrosion resistance, high tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/50
CPCC23C22/50C23G1/088
Inventor 蒋春霞郑薇程依
Owner 吉林省聚德管道有限公司
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