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A kind of stainless iron room temperature chemical polishing liquid and its preparation method and use method

A technology for chemical polishing and stainless iron, applied in the field of metal polishing, can solve problems such as unfavorable operator's health, affecting operator's health, not passivation, etc., achieving good polishing and passivation effect, reducing air pollution, The effect of low production and use costs

Active Publication Date: 2018-04-20
Dongguan Kaimeng Chemical Co Ltd
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the field of chemical polishing of stainless iron is mainly used in the three-acid polishing liquid combined with phosphoric acid, nitric acid and hydrochloric acid and its application process. This polishing process has many disadvantages: (1) It needs to be heated to above 75 ° C, and the energy consumption is high; ( 2) Only polishing, not passivation; (3) A large amount of yellow smoke (nitrogen dioxide gas) will be generated during polishing, which will cause serious air pollution, which is not conducive to the health of operators; (4) Some bright additives of polishing fluids are also added The toxic substance ferricyanide complex ion is released, which seriously affects the health of operators

Method used

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  • A kind of stainless iron room temperature chemical polishing liquid and its preparation method and use method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A normal temperature chemical polishing solution for stainless iron, the normal temperature chemical polishing solution for stainless iron comprises the following raw materials in weight percentage:

[0056] Nitric acid 7%

[0057] Sulfuric acid 2%

[0058] Hydrofluoric acid 2%

[0059] Brightener 0.15%

[0060] Rust inhibitor 0.05%

[0061] Surfactant 0.1%

[0062] Corrosion inhibitor 0.1%

[0063] water balance.

[0064] The brightener is succinic acid; the antirust agent is octadecylamine polyoxyethylene ether.

[0065] The surfactant is a nonionic surfactant; the corrosion inhibitor is a cationic pyridinium quaternary ammonium salt.

[0066] The nonionic surfactant is polyethylene glycol; the cationic pyridinium quaternary ammonium salt is cetylpyridinium chloride.

[0067] The invention discloses a method for preparing a normal-temperature chemical polishing liquid for stainless iron. The above-mentioned raw materials are weighed and mixed uniformly by weight...

Embodiment 2

[0070] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0071] A normal temperature chemical polishing solution for stainless iron, the normal temperature chemical polishing solution for stainless iron comprises the following raw materials in weight percentage:

[0072] Nitric acid 9%

[0073] Sulfuric acid 3%

[0074] Hydrofluoric acid 2.5%

[0075] Brightener 0.18%

[0076] Rust inhibitor 0.08%

[0077] Surfactant 0.12%

[0078] Corrosion inhibitor 0.12%

[0079] water balance.

[0080] The invention discloses a method for using the normal-temperature chemical polishing solution for stainless iron. The stainless iron product to be treated is soaked in the normal-temperature chemical polishing solution for stainless iron for 1.5 minutes, and then rinsed with water.

Embodiment 3

[0082] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0083] A normal temperature chemical polishing solution for stainless iron, the normal temperature chemical polishing solution for stainless iron comprises the following raw materials in weight percentage:

[0084] Nitric acid 11%

[0085] Sulfuric acid 4%

[0086] Hydrofluoric acid 3%

[0087] Brightener 0.2%

[0088] Rust inhibitor 0.1%

[0089] Surfactant 0.15%

[0090] Corrosion inhibitor 0.15%

[0091] water balance.

[0092] The invention discloses a method for using the normal-temperature chemical polishing solution for stainless iron. The stainless iron product to be treated is soaked in the normal-temperature chemical polishing solution for stainless iron for 2 minutes, and then rinsed with water.

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Abstract

The invention relates to the technical field of metal polishing, and concretely relates to a stainless iron normal-temperature chemical polishing solution, and a preparation method and a use method thereof. The stainless iron normal-temperature chemical polishing solution comprises, by weight, 7-15% of nitric acid, 2-6% of sulfuric acid, 2-4% of hydrofluoric acid, 0.15-0.25% of a brightener, 0.05-0.15% of an antirust agent, 0.1-0.2% of a surfactant, 0.1-0.2% of a corrosion inhibitor, and the balance of water. The stainless iron normal-temperature chemical polishing solution can be used to polish a stainless iron product at normal temperature, and an form a passive film on the surface of the product, and the stainless iron normal-temperature chemical polishing solution has the advantages of high safety, environmental protection, good stability, good polishing and passivaitng effects, and low use cost.

Description

technical field [0001] The invention relates to the technical field of metal polishing, in particular to a normal-temperature chemical polishing solution for stainless iron and its preparation method and use method. Background technique [0002] With the improvement of people's living standards, stainless iron metal products are increasingly entering kitchen utensils, tableware, etc. in family life, which requires higher and higher requirements for stainless iron metal products, not only durable, but also The performance is good, and the appearance should be mirror-bright, delicate and pleasing to the eye. [0003] At present, the field of chemical polishing of stainless iron is mainly used in the three-acid polishing liquid combined with phosphoric acid, nitric acid and hydrochloric acid and its application process. This polishing process has many disadvantages: (1) It needs to be heated to above 75 ° C, and the energy consumption is high; ( 2) Only polishing, not passivat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F3/06
CPCC23F3/06
Inventor 刘子林刘子灿
Owner Dongguan Kaimeng Chemical Co Ltd