阅读说明：本技术 一种用于冷锻不锈钢紧固件的清洗剂及其使用方法 (Cleaning agent for cold-forging stainless steel fastener and use method thereof ) 是由 戴荣伟 诸文华 胡华新 刘朝辉 郭华高 杨闯营 陈洛妮 戴志芳 于 2021-06-10 设计创作，主要内容包括：本发明涉及金属清洗剂技术领域,特别涉及一种用于冷锻不锈钢紧固件的清洗剂,清洗剂由以下组分组成：质量百分含量为2%的磷酸,质量百分含量为0.8%的草酸,质量百分含量为1.7%的柠檬酸,质量百分含量为2.5%的复合表面活性剂,质量百分含量为2%的光亮剂,质量百分含量为2.5%的有色金属保护剂,质量百分含量为0.5%的缓蚀剂,余量为水,本发明的有益效果为：制备方法简单,减少了对环境的污染。(The invention relates to the technical field of metal cleaning agents, in particular to a cleaning agent for a cold-forging stainless steel fastener, which comprises the following components: the corrosion inhibitor comprises, by mass, 2% of phosphoric acid, 0.8% of oxalic acid, 1.7% of citric acid, 2.5% of a composite surfactant, 2% of a brightener, 2.5% of a nonferrous metal protective agent, 0.5% of a corrosion inhibitor and the balance of water, and has the following beneficial effects: the preparation method is simple and reduces the pollution to the environment.)

1. A cleaning agent for a cold-forging stainless steel fastener is characterized by comprising the following components: 2 percent of phosphoric acid, 0.8 percent of oxalic acid, 1.7 percent of citric acid, 2.5 percent of composite surfactant, 2 percent of brightener, 2.5 percent of nonferrous metal protective agent, 0.5 percent of corrosion inhibitor and the balance of water.

2. A cleaning agent for cold-forging stainless steel fasteners as claimed in claim 1, wherein: the composite surfactant is a mixture of more than two of sodium oleate, alkyl glycoside, sodium dodecyl sulfate, coconut oil fatty acid diethanolamide, fatty alcohol-polyoxyethylene ether and polyethylene glycol.

3. A cleaning agent for cold-forging stainless steel fasteners as claimed in claim 1, wherein: the color metal protective agent is one or more of benzotriazole, furfural and mercaptobenzotriazole.

4. A cleaning agent for cold-forging stainless steel fasteners as claimed in claim 1, wherein: the corrosion inhibitor is one or more of thiourea, hexamethylenetetramine and organic nitrogen-containing compounds.

5. A cleaning agent for cold-forging stainless steel fasteners as claimed in claim 1, wherein: the brightener consists of the following components: 3-5% of benzalacetone, 25-30% of nonylphenol polyoxyethylene ether, 2-5% of a diffusant NNO, 6-9% of sodium benzoate, 0.5-1.0% of nicotinic acid, 25-30% of a ZY-1 high-temperature carrier, 0.05-0.20% of a low-unit displacement agent and the balance of water.

6. A use method of the cleaning agent for the cold forging stainless steel fastener according to any one of claims 1 to 5, characterized by comprising the steps of:

s1, heating the cleaning agent to 40-50 ℃;

s2, pouring the heated cleaning agent into an ultrasonic container;

s3, placing the cold-forged stainless steel fastener into an ultrasonic container, and ultrasonically cleaning for 2-10 min;

and S4, taking out the cold-forged stainless steel fastener, rinsing the cold-forged stainless steel fastener in clear water, and drying the fastener.

Technical Field

The invention relates to the technical field of metal cleaning agents, in particular to a cleaning agent for a cold-forging stainless steel fastener and a using method thereof.

Background

The fastener inevitably generates an oxide layer in the production process, and the existence of the oxide layer not only influences the beauty of the fastener, but also influences the use of the fastener. The removal of the oxide layer becomes an indispensable step in the processing process of the fastener, the currently used cleaning agent basically takes inorganic acid as a main component, and the inorganic acid comprises nitric acid, hydrochloric acid, phosphoric acid and the like, has strong corrosivity, can reduce the service life of the fastener while washing off the oxide layer, generates a large amount of waste water, and has poor environmental interpretability of the inorganic acid and serious environmental pollution.

Disclosure of Invention

The invention aims to solve the technical problem of providing a cleaning agent for cold forging stainless steel fasteners and a using method thereof aiming at the defects of the prior art, which meet the cleaning requirement and are environment-friendly.

In order to achieve the purpose, the invention provides the following technical scheme: a cleaning agent for a cold-forging stainless steel fastener is characterized by comprising the following components: 2 percent of phosphoric acid, 0.8 percent of oxalic acid, 1.7 percent of citric acid, 2.5 percent of composite surfactant, 2 percent of brightener, 2.5 percent of nonferrous metal protective agent, 0.5 percent of corrosion inhibitor and the balance of water.

The invention further comprises the following steps: the composite surfactant is a mixture of more than two of sodium oleate, alkyl glycoside, sodium dodecyl sulfate, coconut oil fatty acid diethanolamide, fatty alcohol-polyoxyethylene ether and polyethylene glycol.

The invention further comprises the following steps: the color metal protective agent is one or more of benzotriazole, furfural and mercaptobenzotriazole.

The invention further comprises the following steps: the corrosion inhibitor is one or more of thiourea, hexamethylenetetramine and organic nitrogen-containing compounds.

The invention further comprises the following steps: the brightener consists of the following components: 3-5% of benzalacetone, 25-30% of nonylphenol polyoxyethylene ether, 2-5% of a diffusant NNO, 6-9% of sodium benzoate, 0.5-1.0% of nicotinic acid, 25-30% of a ZY-1 high-temperature carrier, 0.05-0.20% of a low-unit displacement agent and the balance of water.

The invention also provides a using method of the cleaning agent, which is characterized by comprising the following steps:

s1, heating the cleaning agent to 40-50 ℃;

s2, pouring the heated cleaning agent into an ultrasonic container;

s3, placing the cold-forged stainless steel fastener into an ultrasonic container, and ultrasonically cleaning for 2-10 min;

and S4, taking out the cold-forged stainless steel fastener, rinsing the cold-forged stainless steel fastener in clear water, and drying the fastener.

The invention has the beneficial effects that: 1. the invention provides a cleaning agent for a cold-forging stainless steel fastener, which is simple in preparation method; 2. the traditional strong acid is changed into the weak acidic organic acid, so that the pollution to the environment is reduced, the acidity of the organic acid is weak, and the expected effect cannot be achieved by simply using the organic acid to clean the cold-forged stainless steel fastener, so that the acidity of the weak acid is enhanced by using the ultrasonic container, and the cleaning effect is improved; 3. by adding the non-ferrous metal protective agent, the corrosivity of the cleaning agent on non-ferrous metal parts can be reduced, and the damage of color change and corrosion on the surfaces of the parts is avoided; 4. by adding the brightening agent, the glossiness of the surface can be increased, and the surface finish of the product is improved.

Detailed Description

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

A cleaning agent for a cold-forging stainless steel fastener is characterized by comprising the following components: 2 percent of phosphoric acid, 0.8 percent of oxalic acid, 1.7 percent of citric acid, 2.5 percent of composite surfactant, 2 percent of brightener, 2.5 percent of nonferrous metal protective agent, 0.5 percent of corrosion inhibitor and the balance of water.

The composite surfactant is a mixture of more than two of sodium oleate, alkyl glycoside, sodium dodecyl sulfate, coconut oil fatty acid diethanolamide, fatty alcohol-polyoxyethylene ether and polyethylene glycol.

The color metal protective agent is one or more of benzotriazole, furfural and mercapto benzotriazole.

The corrosion inhibitor is one or more of thiourea, hexamethylenetetramine and organic nitrogen-containing compounds.

The brightener consists of the following components: 3-5% of benzalacetone, 25-30% of nonylphenol polyoxyethylene ether, 2-5% of a diffusant NNO, 6-9% of sodium benzoate, 0.5-1.0% of nicotinic acid, 25-30% of a ZY-1 high-temperature carrier, 0.05-0.20% of a low-unit displacement agent and the balance of water.

A use method of a cleaning agent for a cold-forging stainless steel fastener is characterized by comprising the following steps:

s1, heating the cleaning agent to 40-50 ℃;

s2, pouring the heated cleaning agent into an ultrasonic container;

s3, placing the cold-forged stainless steel fastener into an ultrasonic container, and ultrasonically cleaning for 2-10 min;

and S4, taking out the cold-forged stainless steel fastener, rinsing the cold-forged stainless steel fastener in clear water, and drying the fastener.