Deformed steel bar compound corrosion-inhibited quenching agent and usage method thereof

A quenching agent and rebar technology, applied in the direction of quenching agent, heat treatment equipment, manufacturing tools, etc., to achieve the effect of overcoming environmental pollution and human health hazards, low price, and high corrosion inhibition efficiency

Active Publication Date: 2013-07-17
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rebar compound anti-corrosion quenching agent of the present invention has high corrosion inhibition efficiency and can be recycled, and overcomes the disadvantages of traditional corrosion inhibitors such as environmental pollution and harmfulness to human health.

Method used

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  • Deformed steel bar compound corrosion-inhibited quenching agent and usage method thereof
  • Deformed steel bar compound corrosion-inhibited quenching agent and usage method thereof
  • Deformed steel bar compound corrosion-inhibited quenching agent and usage method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Add 0.3 parts of sodium carboxymethylcellulose, 0.5 parts of sodium benzoate, 0.5 parts of triethanolamine, 5 parts of sodium carbonate, 1.3 parts of sodium hydroxide and 7 parts of water glass into 77.2 parts of tap water while stirring at room temperature, and all substances are dissolved Then continue to stir until the solution is uniform and transparent to obtain the compound corrosion inhibitor and quenching agent of the present invention, with a pH value of 13.45 and a viscosity of 7.1 mPa·S.

[0034]The corrosion resistance of rebar was evaluated by CCT and ET respectively, and the corrosion inhibition rate is shown in Table 1. It can be seen from Table 1 that the corrosion inhibition rates of CCT and ET reach 45% and 99% respectively, and the corrosion resistance of rebar after quenching with the compound corrosion inhibitor and quenching agent of the present invention is greatly improved. Tafel line of electrochemical method see figure 1 ,Depend on figure 1 I...

Embodiment 2

[0036] Add 0.1 parts of sodium polyacrylate, 0.5 parts of sodium benzoate, 1.5 parts of triethanolamine, 3 parts of sodium carbonate, 1.3 parts of sodium hydroxide and 10 parts of water glass into 76.2 parts of tap water while stirring at room temperature, and continue stirring after all substances are dissolved Until the solution is uniform and transparent, the compound corrosion inhibitor quenching agent of the present invention is obtained, the pH value is 13.32, and the viscosity is 7.76mPa·S.

[0037] The corrosion resistance of rebar was evaluated by CCT and ET respectively. The corrosion inhibition rate is shown in Table 1. As can be seen from Table 1, the corrosion inhibition rates of CCT and ET reach 49% and 91.7% respectively, and the corrosion resistance of the threaded steel after the quenching treatment of the compound corrosion inhibiting quenching agent of the present invention is greatly improved. improvement. Tafel line of electrochemical method see figure ...

Embodiment 3

[0039] At room temperature, add 0.3 part of sodium polyacrylate, 0.5 part of sodium benzoate, 0.5 part of triethanolamine and 12 parts of water glass into 87.9 parts of tap water while stirring, and continue stirring until the solution is uniform and transparent after all the substances are dissolved to obtain the composite compound of the present invention. Corrosion inhibitor quenching agent, pH value is 11.86, viscosity is 5.7mPa·S.

[0040] The corrosion resistance of rebar was evaluated by CCT and ET respectively. The corrosion inhibition rate is shown in Table 1. It can be seen from the corrosion inhibition rate in Table 1 that the corrosion inhibition rates of CCT and ET reach 67.6% and 99.9% respectively. be greatly improved. Tafel line of electrochemical method see image 3 . Depend on image 3 It can be seen that the self-corrosion potential of the carbon steel sheet after the quenching treatment of the corrosion inhibitor and quenching agent is obviously shifted...

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Abstract

The invention discloses a deformed steel bar compound corrosion-inhibited quenching agent and a usage method thereof. The compound corrosion-inhibited quenching agent is obtained by mixing the following compositions in parts by weight: 0-1 part of sodium carboxy methyl cellulose, 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 sodium silicate, and 70-90 parts of water. In use, the non-rusted deformed steel bar is subjected to quenching treatment in the corrosion-inhibited quenching agent for 1-2s at 100-200 DEG C, thereby being capable of slowing down the corrosion of the deformed steel bar under the atmosphere. The corrosion-inhibited quenching agent does not contain nitrite and chromate, has no S and P atoms, and is green and environment-friendly, low in cost, and recyclable.

Description

1. Technical field [0001] The invention belongs to the field of corrosion and protection of steel materials, and in particular relates to a compound corrosion-inhibiting quenching agent for threaded steel to prevent and slow down the corrosion of threaded steel in the atmosphere. 2. Background technology [0002] Rebar is an important steel product that is widely used in construction and other industries. However, it is easy to corrode and rust in surrounding media such as carbon dioxide, oxygen, water, and acid during storage, transportation, and use. Corrosion not only causes waste of steel and affects the appearance of rebar, but also reduces the strength of steel and the bonding force with concrete, causing safety hazards in production and life. It is particularly important to take effective measures to slow down the corrosion of rebar, and adding corrosion inhibitor is an easy-to-operate method, which is widely used because of its small dosage, low cost, wide selection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/60C23F11/08
Inventor 魏凤玉李武林
Owner HEFEI UNIV OF TECH
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