阅读说明：本技术 一种耐腐蚀光圆钢筋及其制备方法 (Corrosion-resistant smooth steel bar and preparation method thereof ) 是由 周新平 于 2020-06-12 设计创作，主要内容包括：本发明涉及光圆钢筋冶炼领域,提供一种耐腐蚀光圆钢筋及其制备方法,用于解决光圆钢筋的腐蚀问题。本发明提供的一种耐腐蚀光圆钢筋的制备方法,将光圆钢筋在100~110℃下于缓蚀淬火剂中淬火处理1~2s；所述缓蚀淬火剂包括：聚丙烯酸钠0.03~0.2质量份,苯甲酸钠0.1~1质量份,三乙醇胺0.1~1质量份,氢氧化钠0.5~1质量份,硅酸钠7~9质量份,硼锆交联剂0.02~0.05质量份,木质素磺酸盐0.2~0.5质量份,海藻酸钠0.1~0.3质量份,水70~90质量份。灵活的调节了淬火剂的粘度,提高光圆钢筋的耐腐蚀性能。(The invention relates to the field of smooth round steel bar smelting, and provides a corrosion-resistant smooth round steel bar and a preparation method thereof, which are used for solving the corrosion problem of the smooth round steel bar. The preparation method of the corrosion-resistant smooth round steel bar provided by the invention comprises the following steps of quenching the smooth round steel bar in a corrosion inhibition quenching agent for 1-2 s at the temperature of 100-110 ℃; the corrosion inhibition quenching agent comprises: 0.03-0.2 part by mass of sodium polyacrylate, 0.1-1 part by mass of sodium benzoate, 0.1-1 part by mass of triethanolamine, 0.5-1 part by mass of sodium hydroxide, 7-9 parts by mass of sodium silicate, 0.02-0.05 part by mass of boron-zirconium crosslinking agent, 0.2-0.5 part by mass of lignosulfonate, 0.1-0.3 part by mass of sodium alginate and 70-90 parts by mass of water. The viscosity of the quenching agent is flexibly adjusted, and the corrosion resistance of the smooth round steel bar is improved.)

1. The preparation method of the corrosion-resistant smooth round steel bar is characterized in that the smooth round steel bar is quenched in a corrosion inhibition quenching agent for 1-2 s at the temperature of 100-110 ℃;

the corrosion inhibition quenching agent comprises: 0.03-0.15 part by mass of sodium polyacrylate, 0.05-1 part by mass of sodium benzoate, 0.2-1 part by mass of triethanolamine, 0.6-2 parts by mass of sodium hydroxide, 7-10 parts by mass of sodium silicate, 0.01-0.05 part by mass of boron-zirconium crosslinking agent, 0.1-0.5 part by mass of lignosulfonate, 0.05-0.3 part by mass of sodium alginate and 70-90 parts by mass of water.

2. The method for preparing the corrosion-resistant smooth round steel bar according to claim 1, wherein the corrosion inhibition quenching agent comprises: 0.1-0.15 part by mass of sodium polyacrylate, 0.3-1 part by mass of sodium benzoate, 0.4-1 part by mass of triethanolamine, 0.9-2 parts by mass of sodium hydroxide, 8-10 parts by mass of sodium silicate, 0.02-0.05 part by mass of boron-zirconium crosslinking agent, 0.3-0.5 part by mass of lignosulfonate, 0.2-0.3 part by mass of sodium alginate and 89-90 parts by mass of water.

3. The method for preparing the corrosion-resistant smooth round steel bar according to claim 2, wherein the corrosion inhibition quenching agent comprises: 0.1 part by mass of sodium polyacrylate, 0.3 part by mass of sodium benzoate, 0.4 part by mass of triethanolamine, 0.9 part by mass of sodium hydroxide, 8 parts by mass of sodium silicate, 0.02 part by mass of boron-zirconium cross-linking agent, 0.3 part by mass of lignosulfonate, 0.2 part by mass of sodium alginate and 89 parts by mass of water.

4. The method for preparing the corrosion-resistant smooth round steel bar according to claim 1, wherein the method for preparing the boron-zirconium cross-linking agent comprises the following steps:

mixing zirconium oxychloride, water, glycerol, sodium hydroxide and lactic acid, and heating to 60-65 ℃ in a water bath until the zirconium oxychloride, the water, the glycerol, the sodium hydroxide and the lactic acid are completely dissolved;

adding mannitol, heating to 80-90 ℃, and reacting for 5-6 h; to obtain the organic zirconium crosslinking agent

Adding an organic boron crosslinking agent, and fully stirring to obtain a boron-zirconium crosslinking agent;

the mass ratio of the organic boron crosslinking agent to the organic zirconium crosslinking agent is 1: 1-1.2, the mass ratio of water to isopropanol is 2-3: 1, the mass ratio of glycerol to zirconium oxychloride is 2-3: 1, the molar ratio of mannitol to lactic acid is 1: 1-1.2, the mass ratio of mannitol to zirconium oxychloride is 1-3: 1, and the mass ratio of sodium hydroxide to zirconium oxychloride is 0.2-0.3: 1.

5. The preparation method of the corrosion-resistant smooth round steel bar according to claim 4, wherein the mass ratio of the organic boron crosslinking agent to the organic zirconium crosslinking agent is 1: 1-1.1, and the mass ratio of water to isopropanol is 2.5-3: 1, the mass ratio of glycerol to zirconium oxychloride is 2.8-3: 1, the molar ratio of mannitol to lactic acid is 1: 1-1.1, the mass ratio of mannitol to zirconium oxychloride is 2-3: 1, and the mass ratio of sodium hydroxide to zirconium oxychloride is 0.25-0.3: 1.

6. The method for preparing the corrosion-resistant smooth round steel bar according to claim 5, wherein the mass ratio of the organic boron crosslinking agent to the organic zirconium crosslinking agent is 1:1, and the mass ratio of water to isopropanol is 2.5: 1, the mass ratio of glycerol to zirconium oxychloride is 2.1:1, the molar ratio of mannitol to lactic acid is 1:1, the mass ratio of mannitol to zirconium oxychloride is 2:1, and the mass ratio of sodium hydroxide to zirconium oxychloride is 0.25: 1.

7. The method for preparing the corrosion-resistant smooth round steel bar according to claim 4, wherein the method for preparing the organic boron crosslinking agent comprises the following steps:

mixing borax, sodium hydroxide, glycerol and water, and heating to 60-65 ℃ in a water bath until the borax, the sodium hydroxide, the glycerol and the water are completely dissolved;

adding mannitol, heating to 80-90 ℃, and reacting for 5-6 h; obtaining an organic boron crosslinking agent;

the mass ratio of the borax to the mannitol is 1: 0.6-0.8, the mass ratio of the water to the glycerol is 2-3: 1, the mass ratio of the glycerol to the borax is 0.6-0.8: 1, and the mass ratio of the sodium hydroxide to the water is 0.05-0.1.

8. The method for preparing the corrosion-resistant polished round steel bar according to claim 4, wherein the mass ratio of borax to mannitol is 1:0.75, the mass ratio of water to glycerol is 2.8:1, the mass ratio of glycerol to borax is 0.75:1, and the mass ratio of sodium hydroxide to water is 0.075: 1.

9. The method for preparing the corrosion-resistant smooth round steel bar according to claim 1, wherein the corrosion inhibition quenching agent is prepared by the following steps:

mixing sodium polyacrylate, sodium benzoate, triethanolamine, sodium hydroxide, sodium silicate and water, and then fully dissolving to obtain an intermediate reagent;

adding a boron-zirconium cross-linking agent, lignosulfonate and sodium alginate into the intermediate reagent, and fully dissolving to obtain the corrosion inhibition quenching agent.

10. A corrosion-resistant round smooth bar, characterized by being produced by the production method according to any one of claims 1 to 9.

Technical Field

The invention relates to the field of smooth round steel bar smelting, in particular to a corrosion-resistant smooth round steel bar and a preparation method thereof.

Background

The plain round steel bar is an important steel material and has wide application in industries such as buildings and the like. It is susceptible to corrosion and rust in the surrounding media such as carbon dioxide, oxygen, water, acid, etc. during storage, transportation and use. The corrosion not only causes the waste of steel and influences the appearance of the deformed steel bar, but also reduces the strength of the steel bar and the binding force between the steel bar and the concrete, and causes the potential safety hazard of production and life. The corrosion of the plain round steel bar is slowed down by effective measures, and the addition of the corrosion inhibitor is an easy-to-operate means, and the corrosion inhibitor is widely applied due to small consumption, low cost, wide material selection and high corrosion inhibition efficiency.

CN201310142958.X discloses a compound corrosion-inhibiting quenching agent, which is prepared by mixing, by weight, 0-1 part of sodium carboxymethylcellulose, 0-1 part of sodium polyacrylate, 0.1-1 part of sodium benzoate, 0.1-2 parts of triethanolamine, 0-0.1 part of sodium molybdate, 0-5 parts of sodium hydroxide, 0-10 parts of sodium carbonate, 5-15 parts of water glass and 70-90 parts of water. The corrosion of the plain round steel bar in the atmosphere can be slowed down, but the effect of the corrosion inhibition quenching agent on slowing down the corrosion of the plain round steel bar is still to be improved.

Disclosure of Invention

The invention provides a corrosion-resistant smooth round steel bar and a preparation method thereof, and solves the technical problem of corrosion of the smooth round steel bar.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a corrosion-resistant plain steel bar is prepared by quenching the plain steel bar in a corrosion-inhibition quenching agent for 1-2 s at 100-110 ℃;

the corrosion inhibition quenching agent comprises: 0.03-0.15 part by mass of sodium polyacrylate, 0.05-1 part by mass of sodium benzoate, 0.2-1 part by mass of triethanolamine, 0.6-2 parts by mass of sodium hydroxide, 7-10 parts by mass of sodium silicate, 0.01-0.05 part by mass of boron-zirconium crosslinking agent, 0.1-0.5 part by mass of lignosulfonate, 0.05-0.3 part by mass of sodium alginate and 70-90 parts by mass of water.

The viscosity of the quenching agent can be improved by compounding the lignin ammonia sulfonate, the boron-zirconium cross-linking agent, the sodium alginate and the sodium polyacrylate, so that the corrosion resistance effect of the polished round steel bar is improved.

The corrosion resistance effect of the plain round steel bar is obviously improved.

In order to further improve the corrosion resistance effect of the plain round steel bar, the inventor finds in a large number of experiments that the viscosity of the quenching agent is controlled to be neither too high nor too low, and the appropriate viscosity can generate an adsorption film and a passivation film on the surface of the steel bar, so that the corrosion resistance performance of the plain round steel bar can be obviously improved.

The use of only sodium polyacrylate is not flexible enough for adjusting the viscosity, and easily causes the viscosity to be too high or too low.

In order to flexibly adjust the viscosity of the quenching agent and further improve the corrosion resistance of the steel bar, the inventor conducts a large number of tests and tries various agents.

The thickener is a substance capable of increasing the viscosity of latex and liquid, and is also called as paste when used for food. The thickening agent can increase the viscosity of the system and keep the system in a uniform and stable suspension state or an emulsion state. After extensive experimentation, the inventors found that the addition of the thickener alone easily resulted in a quenchant with too high a viscosity, resulting in a quenchant that did not perform as well.

The viscosity regulator comprises a tackifier and a viscosity reducer, and how to find a balance between the thickener and the viscosity reducer can be an important means for improving the corrosion resistance effect of the smooth steel bar.

After a large number of experiments, the inventor finds that the corrosion resistance effect of the smooth round steel bar cannot be improved by using the conventional thickening agent and viscosity reducer together with sodium polyacrylate. The inventor tries to make other approaches, and the corrosion resistance effect of the smooth round steel bar cannot be effectively improved.

In an accidental situation, the corrosion resistance effect of the polished round steel bar can be effectively improved by compounding the lignosulphonate, the boron-zirconium cross-linking agent, the sodium alginate and the sodium polyacrylate. The boron-zirconium cross-linking agent is used as a thickening agent, the lignosulfonate is used as a viscosity reducer, the sodium alginate is also used as a thickening agent, the boron-zirconium cross-linking agent, the lignosulfonate and the sodium alginate are compounded with the sodium polyacrylate, the viscosity of the system can be effectively adjusted by adding water, and the corrosion resistance effect of the corrosion-resistant polished round steel bar can be effectively improved.

Preferably, the corrosion inhibiting quenching agent comprises: 0.1-0.15 part by mass of sodium polyacrylate, 0.3-1 part by mass of sodium benzoate, 0.4-1 part by mass of triethanolamine, 0.9-2 parts by mass of sodium hydroxide, 8-10 parts by mass of sodium silicate, 0.02-0.05 part by mass of boron-zirconium crosslinking agent, 0.3-0.5 part by mass of lignosulfonate, 0.2-0.3 part by mass of sodium alginate and 89-90 parts by mass of water.

Preferably, the corrosion inhibiting quenching agent comprises: 0.1 part by mass of sodium polyacrylate, 0.3 part by mass of sodium benzoate, 0.4 part by mass of triethanolamine, 0.9 part by mass of sodium hydroxide, 8 parts by mass of sodium silicate, 0.02 part by mass of boron-zirconium cross-linking agent, 0.3 part by mass of lignosulfonate, 0.2 part by mass of sodium alginate and 89 parts by mass of water. The addition amount of each component is optimized, so that the effect of regulating the viscosity of the system by water is better exerted, and the corrosion resistance effect of the plain round steel bar is improved.

Preferably, the preparation method of the boron zirconium cross-linking agent is as follows:

mixing zirconium oxychloride, water, glycerol, sodium hydroxide and lactic acid, and heating to 60-65 ℃ in a water bath until the zirconium oxychloride, the water, the glycerol, the sodium hydroxide and the lactic acid are completely dissolved;

adding mannitol, heating to 80-90 ℃, and reacting for 5-6 h; to obtain the organic zirconium crosslinking agent

Adding an organic boron crosslinking agent, and fully stirring to obtain a boron-zirconium crosslinking agent;

the mass ratio of the organic boron crosslinking agent to the organic zirconium crosslinking agent is 1: 1-1.2, the mass ratio of water to isopropanol is 2-3: 1, the mass ratio of glycerol to zirconium oxychloride is 2-3: 1, the molar ratio of mannitol to lactic acid is 1: 1-1.2, the mass ratio of mannitol to zirconium oxychloride is 1-3: 1, and the mass ratio of sodium hydroxide to zirconium oxychloride is 0.2-0.3: 1.

Preferably, the mass ratio of the organic boron crosslinking agent to the organic zirconium crosslinking agent is 1: 1-1.1, and the mass ratio of water to isopropanol is 2.5-3: 1, the mass ratio of glycerol to zirconium oxychloride is 2.8-3: 1, the molar ratio of mannitol to lactic acid is 1: 1-1.1, the mass ratio of mannitol to zirconium oxychloride is 2-3: 1, and the mass ratio of sodium hydroxide to zirconium oxychloride is 0.25-0.3: 1.

Preferably, the mass ratio of the organic boron crosslinking agent to the organic zirconium crosslinking agent is 1:1, and the mass ratio of water to isopropanol is 2.5: 1, the mass ratio of glycerol to zirconium oxychloride is 2.1:1, the molar ratio of mannitol to lactic acid is 1:1, the mass ratio of mannitol to zirconium oxychloride is 2:1, and the mass ratio of sodium hydroxide to zirconium oxychloride is 0.25: 1.

Preferably, the preparation method of the organic boron crosslinking agent is as follows:

mixing borax, sodium hydroxide, glycerol and water, and heating to 60-65 ℃ in a water bath until the borax, the sodium hydroxide, the glycerol and the water are completely dissolved;

adding mannitol, heating to 80-90 ℃, and reacting for 5-6 h; obtaining an organic boron crosslinking agent;

the mass ratio of the borax to the mannitol is 1: 0.6-0.8, the mass ratio of the water to the glycerol is 2-3: 1, the mass ratio of the glycerol to the borax is 0.6-0.8: 1, and the mass ratio of the sodium hydroxide to the water is 0.05-0.1.

Preferably, the mass ratio of the borax to the mannitol is 1:0.75, the mass ratio of the water to the glycerol is 2.8:1, the mass ratio of the glycerol to the borax is 0.75:1, and the mass ratio of the sodium hydroxide to the water is 0.075: 1.

Preferably, the preparation method of the corrosion inhibition quenching agent comprises the following steps:

mixing sodium polyacrylate, sodium benzoate, triethanolamine, sodium hydroxide, sodium silicate and water, and then fully dissolving to obtain an intermediate reagent;

adding a boron-zirconium cross-linking agent, lignosulfonate and sodium alginate into the intermediate reagent, and fully dissolving to obtain the corrosion inhibition quenching agent.

The corrosion-resistant polished round steel bar is prepared by the preparation method.

Compared with the prior art, the invention has the beneficial effects that: the viscosity of the quenching agent is flexibly adjusted, so that the corrosion resistance effect of the plain round steel bar is obviously improved.

The corrosion resistance effect of the smooth steel bar can be effectively improved by compounding the lignosulfonate, the boron-zirconium cross-linking agent, the sodium alginate and the sodium polyacrylate, the four agents can effectively control the viscosity of the quenching agent, the four agents are neither too high nor too low, an adsorption film and a passivation film can be generated on the surface of the steel bar by proper viscosity, and the corrosion resistance of the smooth steel bar can be obviously improved.

Detailed Description

The following examples are further illustrative of the present invention and are not intended to be limiting thereof.