阅读说明：本技术 除锈清洗剂及其使用方法 (Rust removal cleaning agent and use method thereof ) 是由 向佩志 柳葛贤 于 2019-11-06 设计创作，主要内容包括：本发明属于铁配件除锈技术领域,公开了一种除锈清洗剂,由以下重量份的组份组成：无机酸,10～30％；有机磷酸,1％～5％；表面活性剂,1～5％；缓蚀剂,0.5～2％；余量,水。本发明还公开了一种除锈清洗剂的使用方法,包括如下步骤：浸泡、常温酸洗、清洗、干燥。与相关技术相比,本发明一种除锈清洗剂对油污和锈蚀有很好的清除效果,同时能除去金属表面的水泥渣,避免酸雾产生,对钢铁无过腐蚀现象,水洗后不易返锈,适合再次加工或者重复利用。本发明一种除锈清洗剂还能显著提升钢铁金属表面清洗速度,解决传统化学清洗的金属表面铁锈等氧化物、还能清除水泥渣、油污等,避免产生酸雾,清洗后表面呈现金属光泽。(The invention belongs to the technical field of rust removal of iron accessories, and discloses a rust removal cleaning agent which comprises the following components in parts by weight: 10-30% of inorganic acid; 1 to 5 percent of organic phosphoric acid; 1-5% of a surfactant; 0.5-2% of corrosion inhibitor; the balance being water. The invention also discloses a use method of the rust removing cleaning agent, which comprises the following steps: soaking, pickling at normal temperature, cleaning and drying. Compared with the prior art, the rust removing cleaning agent has a good effect of removing oil stains and rust, can remove cement slag on the surface of metal, avoids acid mist generation, has no over-corrosion phenomenon on steel, is not easy to return rust after being washed, and is suitable for secondary processing or recycling. The rust removing cleaning agent can also obviously improve the cleaning speed of the surface of steel and iron metal, solves the problems of oxides such as rust and the like on the surface of metal by traditional chemical cleaning, can also remove cement slag, oil stain and the like, avoids generating acid mist, and ensures that the surface presents metal luster after cleaning.)

1. The rust removing cleaning agent is characterized by comprising the following components in parts by weight:

10-30% of inorganic acid;

1 to 5 percent of organic phosphoric acid;

1-5% of a surfactant;

0.5-2% of corrosion inhibitor;

the balance being water.

2. The rust removing cleaning agent as claimed in claim 1, wherein the inorganic acid is two or more of sulfuric acid, nitric acid, phosphoric acid and hydrochloric acid.

3. The rust removing cleaning agent as claimed in claim 1, wherein the inorganic acid is two or more of sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid and hydrochloric acid; wherein, the percentage value of the weight portion of the hydrofluoric acid in the total weight portion of the derusting cleaning agent is less than or equal to 5 percent.

4. The rust removing cleaning agent as claimed in claim 1, wherein the organic phosphoric acid is one or more of hydroxyethylidene diphosphonic acid, amino trimethyl hypophosphorous acid and ethylene diamine tetra methyl hypophosphorous acid.

5. The rust removing cleaning agent as claimed in claim 1, wherein the corrosion inhibitor is one or two of urotropine and triethanolamine.

6. The rust removing cleaning agent as claimed in claim 1, wherein the surfactant is a mixture of sodium dodecylbenzenesulfonate and sodium dodecylsulfate.

7. The rust removing cleaning agent as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 10% of phosphoric acid; hydrochloric acid, 15%; 5% of hydrofluoric acid; 2.5% of hydroxyethylidene diphosphonic acid; 2.5 percent of amino trimethyl phosphinic acid; sodium dodecyl benzene sulfonate, 3%; sodium dodecyl sulfate, 2%; 1% of urotropin; 1% of triethanolamine; the balance being water.

8. The rust removing cleaning agent as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 25% of sulfuric acid; 1% of hydroxyethylidene diphosphonic acid; 2% of amino trimethyl phosphinic acid; 2% of ethylene diamine tetra methyl hypophosphorous acid; sodium dodecyl benzene sulfonate, 3%; sodium dodecyl sulfate, 1%; 1.5 percent of urotropin; triethanolamine, 0.25; the balance being water.

9. The application method of the rust removing cleaning agent is characterized by comprising the following steps:

s1, soaking the workpiece to be cleaned in the rust removing cleaning agent, or brushing the rust removing cleaning agent on the workpiece to be cleaned;

s2, pickling the workpiece for 2-10 minutes at normal temperature under the action of the rust removing cleaning agent;

s3, cleaning the workpiece by using water;

and S4, naturally drying the workpiece.

10. The use method of the rust removing cleaning agent as claimed in claim 9, characterized in that the use method of the rust removing cleaning agent further comprises the following steps:

and S5, coating rust preventive oil on the workpiece.

Technical Field

The invention belongs to the technical field of rust removal of iron accessories, and particularly discloses a rust removal cleaning agent and a use method thereof.

Background

The steel material has wide application, and is particularly applied to various fields of human society as a connecting piece. For example, in an aluminum alloy formwork system for building, in order to realize connection between formworks, a large number of fittings such as pin pieces and the like are needed, such iron fittings are made of steel materials, the use environment is relatively severe, and the conditions such as corrosion, concrete adhesion and the like are easy to occur. When the cleaning agent is used again, dirt such as rust, oil stain and concrete on iron fittings needs to be cleaned. In the related technology, the traditional chemical rust removal usually uses strong acid, and the acid can react with iron rust and metal oxide to generate soluble salts, thereby achieving the purpose of rust removal. However, the method has obvious defects, and the generation of a large amount of hydrogen in the treatment process can cause the hydrogen embrittlement phenomenon of steel, cause the reduction of the mechanical property of metal and influence the strength of the steel; meanwhile, acid mist is easily formed, which affects the health of operators and corrodes surrounding equipment and environment.

Therefore, there is a need to provide a new rust removing cleaning agent and a method for using the same to solve the above technical problems.

Disclosure of Invention

The invention provides a rust removing cleaning agent which comprises the following components in parts by weight:

10-30% of inorganic acid;

1 to 5 percent of organic phosphoric acid;

1-5% of a surfactant;

0.5-2% of corrosion inhibitor;

the balance being water.

Preferably, the inorganic acid is two or more of sulfuric acid, nitric acid, phosphoric acid and hydrochloric acid.

Preferably, the inorganic acid is two or more of sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid and hydrochloric acid; wherein, the percentage value of the weight portion of the hydrofluoric acid in the total weight portion of the derusting cleaning agent is less than or equal to 5 percent.

Preferably, the organic phosphoric acid is one or more of hydroxyethylidene diphosphonic acid, amino trimethyl hypophosphorous acid and ethylene diamine tetra methyl hypophosphorous acid.

Preferably, the corrosion inhibitor is one or two of urotropin and triethanolamine.

Preferably, the surfactant is a mixture of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.

Preferably, the rust removing cleaning agent consists of the following components in parts by weight: 10% of phosphoric acid; hydrochloric acid, 15%; 5% of hydrofluoric acid; 2.5% of hydroxyethylidene diphosphonic acid; 2.5 percent of amino trimethyl phosphinic acid; sodium dodecyl benzene sulfonate, 3%; sodium dodecyl sulfate, 2%; 1% of urotropin; 1% of triethanolamine; the balance being water.

Preferably, the rust removing cleaning agent consists of the following components in parts by weight: 25% of sulfuric acid; 1% of hydroxyethylidene diphosphonic acid; 2% of amino trimethyl phosphinic acid; 2% of ethylene diamine tetra methyl hypophosphorous acid; sodium dodecyl benzene sulfonate, 3%; sodium dodecyl sulfate, 1%; 1.5 percent of urotropin; triethanolamine, 0.25; the balance being water.

The invention also discloses a use method of the rust removing cleaning agent, which comprises the following steps:

s1, soaking the workpiece to be cleaned in the rust removing cleaning agent, or brushing the rust removing cleaning agent on the workpiece to be cleaned;

s2, pickling the workpiece for 2-10 minutes at normal temperature under the action of the rust removing cleaning agent;

s3, cleaning the workpiece by using water;

and S4, naturally drying the workpiece.

Preferably, the use method of the rust removing cleaning agent further comprises the following steps:

and S5, coating rust preventive oil on the workpiece.

Compared with the prior art, the rust removing cleaning agent has a good effect of removing oil stains and rust, can remove cement slag on the surface of metal, avoids acid mist generation, has no over-corrosion phenomenon on steel, is not easy to return rust after being washed, and is suitable for secondary processing or recycling. The rust removing cleaning agent can also obviously improve the cleaning speed of the surface of steel and iron metal, solves the problems of oxides such as rust and the like on the surface of metal by traditional chemical cleaning, can also remove cement slag, oil stain and the like, avoids generating acid mist, and ensures that the surface presents metal luster after cleaning.

Detailed Description

The present invention will be further described with reference to the following embodiments.

Example 1

A rust removing cleaning agent comprises the following components in parts by weight: 5% of sulfuric acid; 5% of nitric acid; 1% of hydroxyethylidene diphosphonic acid; sodium dodecyl benzene sulfonate, 0.5%; sodium dodecyl sulfate, 0.5%; urotropin, 0.5%; the balance being water.

Description of the effects: taking an aluminum template iron accessory which is returned to a factory for cleaning after being used in a construction site, wherein the thickness of rust on the aluminum template iron accessory is about 2mm, soaking the aluminum template iron accessory in the rust removing cleaning agent disclosed by the invention, and pickling the aluminum template iron accessory for 10min at normal temperature, wherein the rust removing effect is as follows: rust on the iron fitting is removed by 0.5mm, and simultaneously, adhered oil stain and cement are removed. Cleaning the aluminum template iron fittings with water; and naturally drying or baking the aluminum template iron accessories. And (4) coating the aluminum template iron fitting with rust preventive oil.

Example 2

A rust removing cleaning agent comprises the following components in parts by weight: 10% of phosphoric acid; hydrochloric acid, 15%; 5% of hydrofluoric acid; 2.5% of hydroxyethylidene diphosphonic acid; 2.5 percent of amino trimethyl phosphinic acid; sodium dodecyl benzene sulfonate, 3%; sodium dodecyl sulfate, 2%; 1% of urotropin; 1% of triethanolamine; the balance being water.

Description of the effects: taking an aluminum template iron accessory which is returned to a factory for cleaning after being used in a construction site, wherein the thickness of rust on the aluminum template iron accessory is about 2mm, soaking the aluminum template iron accessory in the rust removing cleaning agent disclosed by the invention, pickling the aluminum template iron accessory for 2min at normal temperature, and achieving the rust removing effect: and (4) removing all rust on the iron fittings and removing adhered oil stains and cement. Cleaning the aluminum template iron fittings with water; and naturally drying or baking the aluminum template iron accessories. And (4) coating the aluminum template iron fitting with rust preventive oil.

Example 3

A rust removing cleaning agent comprises the following components in parts by weight: 3% of sulfuric acid; 3% of nitric acid; 3% of phosphoric acid; hydrochloric acid, 5%; 1% of hydrofluoric acid; 1% of hydroxyethylidene diphosphonic acid; 1% of amino trimethyl phosphinic acid; 1% of ethylene diamine tetra methyl hypophosphorous acid; sodium dodecyl benzene sulfonate, 2%; sodium dodecyl sulfate, 2%; 1% of urotropin; 0.8 percent of triethanolamine; the balance being water.

Description of the effects: taking an aluminum template iron accessory which is returned to a factory for cleaning after being used in a construction site, wherein the thickness of rust on the aluminum template iron accessory is about 2mm, soaking the aluminum template iron accessory in the rust removing cleaning agent disclosed by the invention, and pickling the aluminum template iron accessory at normal temperature for 6min to achieve the rust removing effect: rust on the iron fittings is removed by 1mm, and meanwhile, adhered oil stains and cement are removed. Cleaning the aluminum template iron fittings with water; and naturally drying or baking the aluminum template iron accessories. And (4) coating the aluminum template iron fitting with rust preventive oil.

Example 4

A rust removing cleaning agent comprises the following components in parts by weight: 8% of sulfuric acid; 4% of nitric acid; 1% of amino trimethyl phosphinic acid; 1% of ethylene diamine tetra methyl hypophosphorous acid; sodium dodecyl benzene sulfonate, 1%; sodium dodecyl sulfate, 3%; urotropin, 0.75%; triethanolamine, 0.75%; the balance being water.

Description of the effects: taking an aluminum template iron accessory which is returned to a factory for cleaning after being used in a construction site, wherein the thickness of rust on the aluminum template iron accessory is about 2mm, soaking the aluminum template iron accessory in the rust removing cleaning agent disclosed by the invention, pickling the aluminum template iron accessory for 7min at normal temperature, and achieving the rust removing effect: rust on the iron fitting is removed by 0.5mm, and simultaneously, adhered oil stain and cement are removed. Cleaning the aluminum template iron fittings with water; and naturally drying or baking the aluminum template iron accessories. And (4) coating the aluminum template iron fitting with rust preventive oil.

Example 5

A rust removing cleaning agent comprises the following components in parts by weight: 8% of phosphoric acid; hydrochloric acid, 12%; 1% of hydroxyethylidene diphosphonic acid; 2% of amino trimethyl phosphinic acid; sodium dodecyl benzene sulfonate, 2%; sodium dodecyl sulfate, 1%; 1% of urotropin; the balance being water.

Description of the effects: taking an aluminum template iron accessory which is returned to a factory for cleaning after being used in a construction site, wherein the thickness of rust on the aluminum template iron accessory is about 2mm, soaking the aluminum template iron accessory in the rust removing cleaning agent disclosed by the invention, and pickling the aluminum template iron accessory for 5min at normal temperature, wherein the rust removing effect is as follows: rust on the iron fittings is removed by 1mm, and meanwhile, adhered oil stains and cement are removed. Cleaning the aluminum template iron fittings with water; and naturally drying or baking the aluminum template iron accessories. And (4) coating the aluminum template iron fitting with rust preventive oil.

Example 6

A rust removing cleaning agent comprises the following components in parts by weight: 25% of sulfuric acid; 1% of hydroxyethylidene diphosphonic acid; 2% of amino trimethyl phosphinic acid; 2% of ethylene diamine tetra methyl hypophosphorous acid; sodium dodecyl benzene sulfonate, 3%; sodium dodecyl sulfate, 1%; 1.5 percent of urotropin; triethanolamine, 0.25; the balance being water.

Description of the effects: taking an aluminum template iron accessory which is returned to a factory for cleaning after being used in a construction site, wherein the thickness of rust on the aluminum template iron accessory is about 2mm, soaking the aluminum template iron accessory in the rust removing cleaning agent disclosed by the invention, and pickling the aluminum template iron accessory at normal temperature for 3min to achieve the rust removing effect: and (4) removing all rust on the iron fittings and removing adhered oil stains and cement. Cleaning the aluminum template iron fittings with water; and naturally drying or baking the aluminum template iron accessories. And (4) coating the aluminum template iron fitting with rust preventive oil.

Example 7

A rust removing cleaning agent comprises the following components in parts by weight: 14 percent of nitric acid; phosphoric acid, 13%; 1% of hydroxyethylidene diphosphonic acid; sodium dodecyl benzene sulfonate, 2%; sodium dodecyl sulfate, 3%; urotropin, 2%; the balance being water.

Description of the effects: taking an aluminum template iron accessory which is returned to a factory for cleaning after being used in a construction site, wherein the thickness of rust on the aluminum template iron accessory is about 2mm, soaking the aluminum template iron accessory in the rust removing cleaning agent disclosed by the invention, and pickling the aluminum template iron accessory at normal temperature for 2.5min to achieve the rust removing effect: rust on the iron fitting is removed by 0.5mm, and simultaneously, adhered oil stain and cement are removed. Cleaning the aluminum template iron fittings with water; and naturally drying or baking the aluminum template iron accessories. And (4) coating the aluminum template iron fitting with rust preventive oil.

The invention has the following function principle: the organic acid in the rust removing cleaning agent has good cleaning capability on silicate and sulfate in cement, and can form metal ions in waterChelate of, p.Ca²⁺、Mg²⁺、Cu²⁺、Te²⁺The plasma metal ions have good chelation, so that the over-corrosion of the metal in the cleaning process is prevented, the surface presents metal luster after cleaning, and the rust is not easy to return after washing. The inorganic acid can simultaneously remove the oxide on the surface of the steel and the silicate cement slag. The corrosion inhibitor has a corrosion inhibition effect on the whole system and eliminates most of acid mist and smell. The surfactant is a mixture of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate. The emulsifying activity of the surfactant can remove oil stains on the surface of steel, the sodium dodecyl benzene sulfonate can activate acid molecules to improve the pickling speed, and the fatty alcohol component in the sodium dodecyl sulfate can form a layer of film on the surface of the rust remover to thoroughly cover acid mist and smell of hydrochloric acid. The metal surface cleaning agent can be used by soaking or brushing, then is washed by water, is naturally dried or dried, the cleaned metal surface is smooth and is not easy to return rust, the effect is better after the metal surface is treated by the anti-rust oil after the metal surface cleaning agent is cleaned, and the storage time is longer.

Compared with the prior art, the rust removing cleaning agent has a good effect of removing oil stains and rust, can remove cement slag on the surface of metal, avoids acid mist generation, has no over-corrosion phenomenon on steel, is not easy to return rust after being washed, and is suitable for secondary processing or recycling. The rust removing cleaning agent can also obviously improve the cleaning speed of the surface of steel and iron metal, avoid the problem of oxides such as rust and the like on the surface of the metal caused by the traditional chemical cleaning, also can remove cement slag, oil stain and the like, avoid acid mist generated in the cleaning process and ensure that the surface presents metal luster after cleaning.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.