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Environment-friendly stainless steel polishing solution and preparation method and polishing process thereof

A polishing liquid and stainless steel technology, applied in polishing process and chemical polishing liquid field of stainless steel, can solve the problems of difficult control of process parameters, short polishing liquid life and high production cost

Active Publication Date: 2017-12-22
无锡市恒利弘实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commercially available polishing liquid mainly has the following types: sulfuric acid type chemical polishing liquid, phosphoric acid type chemical polishing liquid, dichromic acid and its salt series, hydrogen peroxide series, each type of polishing liquid has its own advantages, For example, sulfuric acid polishing liquid is easy to meet the requirements of environmental protection because it does not volatilize and produce smoke. Phosphoric acid can form a mucous film on the metal surface, which is easy to meet the fluidity requirements of the polishing liquid. Each type of polishing liquid has its own shortcomings, such as hydrogen peroxide. It decomposes quickly in a high temperature environment, and the polishing liquid generally has problems such as short service life, poor solution stability, difficult control of process parameters, difficult maintenance of chemical polishing liquid, large amount of waste liquid treatment, and high production cost.

Method used

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  • Environment-friendly stainless steel polishing solution and preparation method and polishing process thereof
  • Environment-friendly stainless steel polishing solution and preparation method and polishing process thereof
  • Environment-friendly stainless steel polishing solution and preparation method and polishing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An environmentally-friendly stainless steel polishing liquid, characterized in that the polishing liquid includes:

[0033] Strong oxidizer: NaNO 3 40g / L, HNO 3 10ml / L and H 3 PO 4 100ml / L;

[0034] Corrosive acid: HCl 50ml / L;

[0035] Compound complexing agent: hydroxyethylidene diphosphoric acid and ammonium bifluoride, mass ratio 1:1.5, total 12g / L;

[0036] Corrosion inhibitor: Na 2 MoO 4 . 10H 2 O, 2g / L;

[0037] Rare earth additives: La(NO 3 ) 3 . 6H 2 O, 1g / L;

[0038] Viscosity modifier: polyethylene glycol, 4g / L;

[0039] Brightener: sulfosalicylic acid, 3g / L;

[0040] Defoamer: Silicone defoamer, 0.1g / L;

[0041] Surfactant: sodium dodecyl sulfonate, 5g / L;

[0042] NO x Remover: 1600~2000 mesh bentonite in ethanol, 3g / L;

[0043] The remainder is deionized water.

[0044] The method steps for preparing the polishing liquid are: (1) Grind the bentonite particles to a fineness of 1600-2000 mesh, then dissolve them in ethanol, add an appropriate amount of surfactant, o C ultra...

Embodiment 2

[0047] An environmentally-friendly stainless steel polishing liquid, characterized in that the polishing liquid includes:

[0048] Strong oxidizer: NaNO 3 50g / L, HNO 3 20ml / L and H 3 PO 4 110ml / L;

[0049] Corrosive acid: HCl 80ml / L;

[0050] Compound complexing agent: hydroxyethylidene diphosphoric acid and ammonium bifluoride, mass ratio 1:1.5, total 13g / L;

[0051] Corrosion inhibitor: Na 2 MoO 4 . 10H 2 O, 2.6g / L;

[0052] Rare earth additives: La(NO 3 ) 3 . 6H 2 O, 1.3g / L;

[0053] Viscosity modifier: gelatin, 6g / L;

[0054] Brightener: Saccharin, 4.5g / L;

[0055] Defoamer: high-carbon alcohol defoamer 0.5g / L;

[0056] Surfactant: Span 60, 6g / L;

[0057] NO x Remover: 1600~2000 mesh bentonite ethanol solution, 3~10g / L;

[0058] The remainder is deionized water.

Embodiment 3

[0060] An environmentally-friendly stainless steel polishing liquid, characterized in that the polishing liquid includes:

[0061] Strong oxidizer: NaNO 3 50g / L, HNO 3 15ml / L and H 3 PO 4 110ml / L;

[0062] Corrosive acid: HCl 75ml / L;

[0063] Compound complexing agent: Hydroxyethylidene diphosphate and ammonium bifluoride, mass ratio 1:1.75, total 13.5g / L;

[0064] Corrosion inhibitor: Na 2 MoO 4 . 10H 2 O, 2.5g / L;

[0065] Rare earth additives: La(NO 3 ) 3 . 6H 2 O, 1.25g / L;

[0066] Viscosity modifier: propylene glycol, 6g / L;

[0067] Brightener: Sulfonamide, 5g / L;

[0068] Defoamer: Polyether modified silicon defoamer, 0.5g / L;

[0069] Surfactant: sodium lauryl sulfate, 6g / L;

[0070] NOx remover: ethanol solution of bentonite below 1600~2000 mesh, 6g / L;

[0071] The remainder is deionized water.

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Abstract

The invention provides an environment-friendly stainless steel polishing solution and a preparation method and polishing process thereof. The environment-friendly stainless steel polishing solution comprises a strong oxidant, corrosive acid, a compound complexing agent, a corrosion inhibitor, a rare earth additive, a viscosity regulator, a brightening agent, a defoaming agent, a surfactant, a NOx remover and deionized water. The polishing solution is good in stability and long in service life, the polishing solution preparation and stainless steel treatment processes are simple, the surface of treated stainless steel is smooth, oxide films are avoided, point corrosion is avoided, the mirror plane is great, the polishing time is short, no irritant gas is generated in the using process, and the polishing solution can be used repeatedly and circularly.

Description

Technical field [0001] The invention belongs to the technical field of metal surface treatment, and specifically relates to a chemical polishing liquid for stainless steel, a preparation method and a polishing process. Background technique [0002] With the improvement of people’s living standards, stainless steel products are becoming more and more widely used in chemical, petroleum, household appliances, hardware, food, machinery manufacturing and other fields, and the requirements for stainless steel products are getting higher and higher, not only to be durable, but also Achieve the appearance of mirror, bright, delicate and pleasing effect. [0003] At present, the commonly used methods of polishing stainless steel mainly include (1) electrochemical polishing. Although the effect of electrochemical polishing is excellent, the energy consumption is high. For complex parts, not only special fixtures are required, but also for anodes, cathodes, and blind holes. The requirements ...

Claims

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Application Information

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IPC IPC(8): C23F3/06
CPCC23F3/06
Inventor 白林森梁莲芝
Owner 无锡市恒利弘实业有限公司
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