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Stainless steel cleaning passivator and application thereof

A technology of stainless steel and passivation agent, which is applied in the coating process of metal materials, etc., can solve the problems of environmental pollution and large loss of steel materials, and achieve the effect of high safety, low loss and realization of recycling

Pending Publication Date: 2020-11-13
绿水新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the existing problems in the current stainless steel pickling process, such as the production of waste acid, waste water, acid mist, environmental pollution, and excessive steel loss, the purpose of the present invention is to provide a stainless steel cleaning passivator and its application. The acid of the stainless steel cleaning passivator is an organic acid, which does not produce acid mist and waste acid during the pickling process, and is suitable for subsequent rinsing of stainless steel by micro-electrolytic oxidation, which is environmentally friendly and safe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] An environmentally friendly stainless steel scale cleaning passivator, which is composed of the following raw materials in mass percentage: 10% citric acid, 10% hydroxysuccinic acid, 4% sodium gluconate, 2% ammonium citrate, synthetic fatty alcohol polyoxygen 1% sodium vinyl ether sulfate, 1% sodium percarbonate, 1% disodium edetate, and the balance is water.

[0043] The preparation method of the environmental-friendly stainless steel scale cleaning passivator is as follows: at normal temperature, according to the proportion, mix and stir each component and water evenly to obtain the product.

[0044] The cleaning and passivation treatment method for stainless steel castings using the above-mentioned environmentally friendly stainless steel scale cleaning passivation agent is as follows:

[0045] Firstly, dilute the environment-friendly stainless steel oxide skin cleaning passivator and water according to the volume ratio of 1:1, mix evenly and heat up to 70 degrees to...

Embodiment 2

[0050] A stainless steel weld cleaning passivator, which is composed of the following raw materials in mass percentage: 30% of hydroxysuccinic acid, 3% of ammonium citrate, 3% of sodium phytate, 1% of synthetic fatty alcohol polyoxyethylene ether sodium sulfate , potassium persulfate 2%, 4 sodium iminodisuccinate (IDS) 2%, and the balance is water.

[0051] The preparation method of the environmental-friendly stainless steel scale cleaning passivator is as follows: at normal temperature, according to the proportion, mix and stir each component and water evenly to obtain the product.

[0052] Utilize above-mentioned environment-friendly stainless steel scale cleaning passivation agent to the cleaning passivation processing method of stainless steel casting according to the method for embodiment 2 as follows:

[0053] First, dilute the environment-friendly stainless steel oxide skin cleaning passivator and water according to the volume ratio of 1:2, mix evenly and then heat up t...

Embodiment 3

[0057] An environmentally friendly stainless steel scale cleaning passivator, which is composed of the following raw materials in mass percentage: citric acid 5%, hydroxysuccinic acid 2%, tartaric acid 3%, phytic acid 1%, linear benzenesulfonic acid 1% %, sodium gluconate 3%, ammonium citrate 2%, synthetic fatty alcohol polyoxyethylene ether sodium sulfate 1%, sodium percarbonate 1%, 4 sodium iminodisuccinate (IDS) 2%, and the balance is water.

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PUM

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Abstract

The invention relates to a stainless steel cleaning passivator and application thereof. The stainless steel cleaning passivator is prepared from the following components of, in percentage by mass, based on the total weight of the stainless steel cleaning passivator, 10%-40% of organic acid, 5%-10% of organic acid salt, 1%-5% of surfactant, 1%-5% of chelating agent, 1%-3% of passivating oxidation auxiliary and the balance water; and the passivating oxidation auxiliary agent is alkali metal salt. Acid of the stainless steel cleaning passivator is organic acid, acid mist and waste acid are not generated in the acid pickling process, and the stainless steel cleaning passivator is suitable for rinsing stainless steel through a microelectrolysis oxidation method subsequently, environment-friendly and high in safety.

Description

technical field [0001] The invention relates to the technical field of metal pickling, in particular to a stainless steel cleaning passivator and its application. Background technique [0002] Stainless steel environmental protection cleaning passivator is made of environmental protection organic acid oxidant as the main body, adding high-efficiency corrosion inhibitor, inorganic active agent, surfactant dosage, surfactant and so on. It is a new high-tech material. It is widely used in the pickling and oxide scale of stainless steel plates, profiles, pipes, bars, castings and various non-standard parts, and it is assisted by passivation function. It can completely replace the traditional pickling based on inorganic acids such as sulfuric acid, nitric acid, and hydrofluoric acid, which is more environmentally friendly, safer, and has significant economic benefits. [0003] Stainless steel has the characteristics of good corrosion resistance, high temperature resistance, low...

Claims

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Application Information

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IPC IPC(8): C23G1/08C23G1/36C23C22/50
CPCC23G1/088C23G1/36C23C22/50
Inventor 崔辉王浩
Owner 绿水新材料科技(苏州)有限公司
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