阅读说明：本技术 一种高温在线水性钢铁防锈剂 (High-temperature online water-based steel antirust agent ) 是由 焦忆楠 贾晓慧 焦占付 于 2019-10-10 设计创作，主要内容包括：本发明公开了一种高温在线水性钢铁防锈剂及其制备方法,所属防锈剂由以下质量百分数的原料制成：成膜剂35-45%,化学转换剂0.6-2%,物理沉积剂4-8%,助剂3-12%,余量为水。所述的成膜剂采用石蜡、硬质酸铝、硬脂酸锌,化学转换剂为磷酸盐、硼酸酯及三乙醇胺,物理沉积剂为800-1000目的脱水透明粉,其主要成分是二氧化硅,助剂包含分散剂、乳化剂、消泡剂和防腐剂。该防锈剂是一种可以再高温金属表面迅速形成防锈膜的水性防锈剂,可以解决室温防锈剂占用场地,人工成本高等弊端,同时也提高了金属在高温和潮湿环境下的防锈性能。(The invention discloses a high-temperature online water-based steel antirust agent and a preparation method thereof, wherein the antirust agent is prepared from the following raw materials in percentage by mass: 35-45% of film-forming agent, 0.6-2% of chemical conversion agent, 4-8% of physical deposition agent, 3-12% of auxiliary agent and the balance of water. The film forming agent adopts paraffin, hard aluminum and zinc stearate, the chemical conversion agent is phosphate, boric acid ester and triethanolamine, the physical deposition agent is 800-1000-mesh dehydrated transparent powder, the main component of the film forming agent is silicon dioxide, and the auxiliary agent comprises a dispersing agent, an emulsifying agent, a defoaming agent and a preservative. The antirust agent is a water-based antirust agent capable of quickly forming an antirust film on the surface of high-temperature metal, can solve the defects that room-temperature antirust agent occupies a field, has high labor cost and the like, and simultaneously improves the antirust performance of metal in high-temperature and humid environments.)

1. A high-temperature online water-based steel antirust agent is characterized in that: the material is prepared from the following raw materials in percentage by mass: 35-45% of film-forming agent, 0.6-2% of chemical conversion agent, 4-8% of physical deposition agent, 3-12% of auxiliary agent and the balance of water.

2. The rust inhibitor according to claim 1, wherein: the film forming agent is paraffin, aluminum stearate and zinc stearate.

3. The rust inhibitor according to claim 1, wherein: the chemical conversion agent is zinc phosphate, boric acid ester and triethanolamine.

4. The rust inhibitor according to claim 1, wherein: the physical deposition agent 800-1000 mesh dehydrated transparent powder mainly comprises silicon dioxide.

5. The rust inhibitor according to claim 1, wherein: the auxiliary agent comprises a dispersing agent, an emulsifying agent, a defoaming agent and a preservative.

6. The process for producing a rust inhibitor according to any one of claims 1 to 5, characterized by comprising: the method comprises the following steps: firstly adding zinc phosphate, ethanol and water into a reaction kettle, slowly heating to 60 ℃, starting a stirrer, uniformly dissolving at the rotation speed of 100 plus materials of 200 r/min after about 1 hour, then sequentially adding 1 paraffin, zinc stearate, aluminum stearate and water, heating to 80-85 ℃, increasing the rotation speed to 400 plus materials of 800 r/min, then sequentially adding a paraffin special emulsifier, an OP-10 emulsifier, a dispersing agent, an antifoaming agent and an antiseptic, stirring for 4 hours, then adding borate, triethanolamine, transparent powder and water, continuously stirring for 1 hour, and cooling to room temperature to obtain the antirust agent.

7. The use method of the rust inhibitor according to any one of claims 1 to 5, wherein: spraying the antirust agent on the surface of the high-temperature metal or enabling the high-temperature metal to penetrate through the antirust agent.

8. The physicochemical properties of the high-temperature online aqueous steel rust inhibitor are shown in the following table

TABLE 1 physicochemical properties of high temperature on-line aqueous steel rust inhibitors.

Technical Field

The invention relates to a high-temperature water-based antirust agent, which is suitable for online antirust treatment during finish rolling of steel products of steel enterprises.

Background

The amount of losses caused by corrosion of ferrous materials is remarkable every year in China, wherein the corrosion of ferrous materials is one of the most important forms of corrosion of ferrous materials. When the corrosion of the steel material is serious, the external diameter and the surface state of the steel material can be changed until the product is scrapped, for example, the diameter of round steel is reduced, and the thickness of steel products such as plates, section steel and the like is reduced.

The traditional rust prevention of steel products is to carry out off-line rust prevention treatment when the steel products are cooled to room temperature after the steel products come off a rolled steel wire, such as rust prevention by rust preventive oil, and rust prevention by water-based or solvent-based rust prevention products. The rust-proof treatment occupies more construction sites, uses more operators and has high production cost.

Disclosure of Invention

The invention aims to provide a non-toxic and environment-friendly water-based antirust agent suitable for high-temperature (below 700 ℃) online construction, so as to overcome the defects that the prior art is only suitable for room temperature, occupies a field and has high labor cost.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the high-temperature online water-based steel antirust agent comprises the following components in parts by weight: 35-45% of film-forming agent, 0.6-2% of chemical conversion agent, 4-8% of physical deposition agent, 3-12% of auxiliary agent and the balance of water.

The film forming agent adopts paraffin, aluminum stearate, zinc stearate and the like as physical deposition film forming agents. The paraffin adopts 56# industrial paraffin produced by Daqing Denghuan petrochemical company, and the aluminum stearate and the zinc stearate adopt industrial grade products produced by Shijiazhuanjiajia synthetic plastic additive company.

The chemical conversion agent is phosphate, boric acid ester and triethanolamine. The phosphate is an industrial grade product produced by Henan Tai and Hui jin powder technology Limited, and the borate is produced by Guangzhou De Xue New Material Limited, model DX 621.

The physical deposition agent is 800-1000-mesh dehydrated transparent powder, is produced by Baodingxin Rich technology chemical Co., Ltd, and mainly comprises silicon dioxide and the like.

The auxiliary agent comprises a dispersing agent, an emulsifying agent, a defoaming agent, a preservative and the like, wherein the emulsifying agent is a special emulsifying agent for paraffin and stearic acid produced by Jiangsu Haian Yongsheng chemical company, and the defoaming agent and the preservative are industrial-grade products produced by Hebei Henan Shui Xinguang chemical company.

The use method of the antirust agent comprises the following steps: and spraying the antirust agent on the surface of the steel product on line by using an on-line spraying device when the steel rolling wire is finally rolled.

The high-temperature online rust prevention treatment is to perform online spraying treatment on the steel product during the finish rolling of the steel rolling wire to form a chemical conversion film layer and a physical deposition film layer on the surface of the steel product, so that the occurrence of rust is reduced during the storage and transportation of the steel product.

The core technology of the invention has the following beneficial effects:

(1) the online implementation is realized, and additional occupied field and constructors are not needed;

(2) the product of the invention can be directly sprayed and implemented at the temperature below 700 ℃, is non-inflammable, non-explosive, non-odor, environment-friendly and harmless;

(3) the product of the invention can not be decomposed at high temperature, does not contain harmful gases such as formaldehyde, acetone, xylene and the like which are harmful to the environment, and has VOC discharge amount lower than the national standard;

(4) the product of the invention does not contain heavy metals such as chromium, lead, cadmium, cobalt and the like, and also does not contain substances such as sodium nitrite, phosphate and the like which are harmful to the environment;

(5) the product is sprayed on the surface of a steel product to form a continuous, compact and colorless protective layer, the antirust effect is superior to that of the traditional antirust method, and the antirust period can reach more than 3-6 months;

(6) the operation is simple, and soaking, spraying and the like can be realized;

(7) the cost is low, and is reduced by more than 30 percent compared with the off-line room temperature rust-proof treatment;

(8) can avoid the economic loss caused by rusting due to various reasons before rust prevention is carried out on the steel after the steel is off line.

The invention achieves the technical progress that: by adopting the component formula, borate and phosphate preferentially react with ferric oxide, ferrous oxide and ferroferric oxide on the surface of steel at the temperature of 200-700 ℃ to generate a compact and continuous protective film, and the chemical conversion film layer plays a role in protecting the steel, further enhances the binding force of the physical deposition film layer and the steel substrate and enhances the antirust capacity of the antirust agent. After a chemical conversion layer is generated on the surface of the steel, the paraffin, the stearate and the transparent powder are continuously deposited on the surface of the steel, and the hydrophobic deposition film layers further enhance the antirust effect of the invention. Compared with the traditional off-line room temperature rust prevention, the product of the invention can be continuously implemented on a steel rolling line of a steel rolling mill on line, has good rust prevention effect and low cost, can save construction site and operators, and reduces the working strength. The economic loss caused by the phenomenon of rusting before rust prevention is carried out on the steel after the steel is off line is avoided. The product is non-toxic and non-volatile, and belongs to a green environment-friendly product.

Detailed Description

The invention is further described with reference to specific examples.