阅读说明：本技术 一种螺纹钢的清洗剂及其制备与使用方法 (Cleaning agent for deformed steel bar and preparation and use methods thereof ) 是由 彭方明 麦吉昌 谢丹 林世文 罗新生 于 2020-12-10 设计创作，主要内容包括：本发明公开了一种螺纹钢的清洗剂及其制备与使用方法,以质量百分比计,为：硫酸7％-12％,过氧化氢8％-13％,乙醇7％-10％,过硫酸铵2％-4％,缓蚀剂0.4％-0.8％,表面活性剂0.5％-1％,其余为水。该清洗剂清洗时间短,效果佳,制备方法简单,使用操作简便,无毒害,适合批量生产。(The invention discloses a cleaning agent for deformed steel bars and a preparation and use method thereof, which comprises the following components in percentage by mass: 7-12% of sulfuric acid, 8-13% of hydrogen peroxide, 7-10% of ethanol, 2-4% of ammonium persulfate, 0.4-0.8% of corrosion inhibitor, 0.5-1% of surfactant and the balance of water. The cleaning agent has the advantages of short cleaning time, good effect, simple preparation method, simple and convenient use and operation, no toxicity and no harm, and is suitable for batch production.)

1. The cleaning agent for the deformed steel bar is characterized by comprising the following components in percentage by mass:

2. the cleaning agent for deformed steel bars according to claim 1, which comprises the following components in percentage by mass: 8% of sulfuric acid, 9% of hydrogen peroxide, 8% of ethanol, 3% of ammonium persulfate, 0.5% of corrosion inhibitor, 0.6% of surfactant and the balance of water.

3. A cleaning agent for deformed steel bars according to claim 1 or 2, wherein the corrosion inhibitor is ammonium carboxylate.

4. A cleaning agent for deformed steel bars according to claim 1 or 2, wherein the surfactant is OPE.

5. A preparation method of the cleaning agent for the deformed steel bar as claimed in claim 1 is characterized in that the following components are weighed according to mass percentage: 7 to 12 percent of sulfuric acid, 8 to 13 percent of hydrogen peroxide, 7 to 10 percent of ethanol, 2 to 4 percent of ammonium persulfate, 0.4 to 0.8 percent of corrosion inhibitor, 0.5 to 1 percent of surfactant and water are added for complement, and the components are uniformly mixed and stirred at the temperature of between 20 and 30 ℃.

6. The method for preparing the cleaning agent for deformed steel bars according to claim 5, wherein the components are uniformly mixed and then stirred at 25 ℃.

7. The method for preparing the cleaning agent for deformed steel bars according to claim 5, wherein each component is added and then stirred sufficiently, and the next component is added after the temperature of the solution is reduced to the temperature.

8. The use method of the cleaning agent for the deformed steel bar is characterized in that the deformed steel bar to be treated is placed in the circulating water flow of the cleaning agent according to claim 1 for cleaning.

9. The method for using a cleaning agent for deformed steel bars according to claim 8, wherein the water flow rate is 0.2 m/s.

10. The method for using the cleaning agent for the deformed steel bar according to claim 8, wherein the cleaning method further comprises the following steps: washing to remove residual liquid and drying.

Technical Field

The invention relates to the field of mechanical cleaning, in particular to a cleaning agent for deformed steel bars and a preparation method and a use method thereof.

Background

During the rolling process of the deformed steel bar, a layer of black oxide is formed on the surface of the deformed steel bar due to the high-temperature effect, partial rust is generated during the transportation and storage processes, and the appearance of the deformed steel bar is influenced by the oxide layer, and the further processing of the deformed steel bar is also influenced.

At present, chemical methods are generally adopted at home and abroad to remove an oxide layer on the surface of stainless steel, the used cleaning agent basically adopts hydrofluoric acid, hydrochloric acid and the like, the hydrofluoric acid is extremely toxic and easy to volatilize, influences are caused on the body health of an operator, meanwhile, damage and pollution are caused to the environment, the hydrochloric acid contains chloride ions, and the cleaning agent for the stainless steel has the risk of causing pitting corrosion, so that the method has important significance for finding a reasonable, feasible, efficient, high-quality and environment-friendly cleaning agent for the deformed steel bar.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a cleaning agent for deformed steel bars, which can be widely used at normal temperature, is non-toxic, efficient and high-quality, and a preparation method and a use method thereof.

The invention firstly provides a cleaning agent for deformed steel bars, which comprises the following components in percentage by mass:

preferably, the cleaning agent for the deformed steel bar comprises the following components in percentage by mass: 8% of sulfuric acid, 9% of hydrogen peroxide, 8% of ethanol, 3% of ammonium persulfate, 0.5% of corrosion inhibitor, 0.6% of surfactant and the balance of water.

Preferably, the corrosion inhibitor is an ammonium carboxylate.

Preferably, the surfactant is OPE.

The invention also provides a preparation method of the cleaning agent for deformed steel bars, which comprises the following steps: weighing the following components in percentage by weight: 7 to 12 percent of sulfuric acid, 8 to 13 percent of hydrogen peroxide, 7 to 10 percent of ethanol, 2 to 4 percent of ammonium persulfate, 0.4 to 0.8 percent of corrosion inhibitor and 0.5 to 1 percent of surfactant are added with water for complement, and the components are uniformly mixed and stirred at the temperature of between 20 and 30 ℃.

Preferably, the mixture is stirred at a temperature of 25 ℃.

Preferably, after each addition of one component, the mixture is stirred thoroughly and the next component is added after the temperature of the solution has dropped to the stated temperature.

The invention also provides a use method of the cleaning agent for the deformed steel bar, which comprises the following steps: and (3) putting the deformed steel bar to be treated into the circulating water flow of the cleaning agent for cleaning.

Preferably, the water flow rate is 0.2 m/s.

Preferably, the residue is washed off after washing and dried.

The invention has the beneficial effects that: the invention provides a cleaning agent for deformed steel bars and a preparation method and a using method thereof.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.

The invention firstly provides a cleaning agent for deformed steel bars, which comprises the following components in percentage by mass:

preferably, the cleaning agent for the deformed steel bar comprises the following components in percentage by mass: 8% of sulfuric acid, 9% of hydrogen peroxide, 8% of ethanol, 3% of ammonium persulfate, 0.5% of corrosion inhibitor, 0.6% of surfactant and the balance of water.

Preferably, the corrosion inhibitor is an ammonium carboxylate.

Preferably, the surfactant is OPE.

The sulfuric acid is an inorganic acid with strong oxidizing property, replaces hydrofluoric acid, hydrochloric acid and the like in the existing cleaning agent, has excellent pickling etching capability, and can effectively remove an oxide layer of the deformed steel bar. If the content of the sulfide is low, the required effect of removing the oxide layer cannot be achieved, but if the content is too high, the deformed steel bar is oxidized, corroded and further passivated, the operation of the next working procedure is influenced, and sulfides which are harmful to human bodies and the environment are easily generated.

The hydrogen peroxide has strong oxidizing property, so that the structure of an oxide layer on the surface of the stainless steel can be changed, the oxide layer is dissolved, and the stainless steel can be passivated to achieve the purpose of protecting a matrix.

The main function of the ethanol is to inhibit the decomposition of the hydrogen peroxide, and the ethanol is easily oxidized into acetic acid in an oxidizing acidic environment, so that the effect of the cleaning agent is enhanced.

Persulfate radicals in the ammonium persulfate can be used as an oxidant, so that when the cleaning agent cleans the deformed steel bar oxide layer, the cleaning agent and sulfuric acid jointly act to enable chromium ions, nickel ions, ferrous ions and the like in the oxide layer to become high-valence ions, and the ammonium ions have strong complexation effect on the high-valence ions, so that the dissolved oxide layer is more stable.

The corrosion inhibitor is used for slowing down the corrosion of the cleaning agent to a steel matrix, and the selected ammonium carboxylate has a good slow-release effect on steel particularly.

The surfactant is favorable for the penetration of the cleaning agent on the oxide layer and accelerates the dissolution of the oxide layer, and the octyl phenol polyoxyethylene ether (OPE) has high stability, is not easy to be damaged by strong acid and strong base, and has excellent stability when matched with the formula of the invention.

The invention also provides a preparation method of the cleaning agent for deformed steel bars, which comprises the following steps: weighing the following components in percentage by weight: 7 to 12 percent of sulfuric acid, 8 to 13 percent of hydrogen peroxide, 7 to 10 percent of ethanol, 2 to 4 percent of ammonium persulfate, 0.4 to 0.8 percent of corrosion inhibitor and 0.5 to 1 percent of surfactant are added with water for complement, and the components are uniformly mixed and stirred at the temperature of between 20 and 30 ℃.

Preferably, the mixture is stirred at a temperature of 25 ℃.

Preferably, after each addition of one component, the mixture is stirred thoroughly and the next component is added after the temperature of the solution has dropped to the stated temperature.

The invention also provides a use method of the cleaning agent for the deformed steel bar, which comprises the following steps: and (3) putting the deformed steel bar to be treated into the circulating water flow of the cleaning agent for cleaning.

Preferably, the water flow rate is 0.2 m/s.

Preferably, the residue is washed off after washing and dried.

The invention uses the circulating water flow, thereby not only accelerating the cleaning speed and meeting the requirements of industrialized production, but also taking away a large amount of heat through the flowing cleaning agent, and avoiding the volatilization of the effective components of the cleaning agent and the accelerated corrosion of high temperature to the steel substrate.

The above is a detailed explanation of the present invention, and the following is an example of the present invention, and the following percentages are percentages by mass.

Example 1

The cleaning agent comprises the following raw materials:

preparation of the cleaning agent: weighing the raw materials according to the mass percentage, uniformly mixing all the components, fully stirring after adding one component, adding the next component after the temperature of the solution is reduced to the temperature, and uniformly stirring at the temperature of 20 ℃.

Example 2

The cleaning agent comprises the following raw materials:

the preparation method is the same as that of the example 1, except that the cleaning agent of the example adopts the raw materials, and the stirring temperature is 30 ℃.

Example 3

The cleaning agent comprises the following raw materials:

the preparation method is the same as that of the example 1, except that the cleaning agent of the example adopts the raw materials, and the stirring temperature is 25 ℃.

Example 4

The deformed steel bars to be treated are respectively placed in the cleaning agents prepared in the embodiments 1-3, cleaned in circulating water flow with the water flow rate of 0.2m/s, residual liquid is washed away after cleaning, and the cleaning effect is shown in the table 1.

TABLE 1 comparison of cleaning results

As can be seen from the table 1, the cleaning agent provided by the invention can be used at normal temperature, is non-toxic, can remove the oxidation layer of the deformed steel bar within 3-5 minutes, has a bright surface, has a good cleaning effect, is simple in preparation method, is simple and convenient to use and operate, and is suitable for batch production.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.