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Preparation technology for high-corrosion-resistance low-carbon steel

A preparation process and low-carbon steel technology, applied in the field of low-carbon steel preparation technology, can solve the problem that the research on the improvement of corrosion resistance of low-carbon steel materials has not been reported yet.

Inactive Publication Date: 2020-05-29
SHENYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, some scholars have conducted some research on the improvement of the corrosion resistance of low-carbon steel welded joints, but the research on the improvement of the overall corrosion resistance of low-carbon steel materials has not been reported.

Method used

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  • Preparation technology for high-corrosion-resistance low-carbon steel
  • Preparation technology for high-corrosion-resistance low-carbon steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] like figure 1 As shown in the figure, a preparation process of high corrosion-resistant low-carbon steel, adding a magnetic treatment section after the completion of the smelting section of the low-carbon steel billet to obtain a magnetically treated slab, and then rolling the magnetically treated slab. The slab is continuously annealed to obtain a low-carbon steel semi-finished product, and then the surface of the low-carbon steel semi-finished product is subjected to a laser shock process to obtain a low-carbon steel with high corrosion resistance.

[0021] Low carbon steel consists of the following mass percentages: carbon 0.22%, silicon 0.04%, manganese 0.45%, phosphorus 0.03%, sulfur 0.01%, and the balance is iron.

[0022] The direction of the magnetic field of the magnetic treatment section is parallel to the surface of the slab to be magnetically treated.

[0023] In the magnetic treatment section, a low-frequency intermittent magnetic field is used for treatme...

Embodiment 2

[0027] A preparation process of high corrosion-resistant low carbon steel, adding a magnetic treatment section after the smelting section of low carbon steel slab is completed to obtain a magnetically treated slab, and then rolling the magnetically treated slab, and the rolled slab is processed. A continuous annealing process is performed to obtain a low-carbon steel semi-finished product, and then a laser shock process is performed on the surface of the low-carbon steel semi-finished product to obtain a highly corrosion-resistant low-carbon steel.

[0028] Low carbon steel consists of the following mass percentages: carbon 0.06%, silicon 0.09%, manganese 0.05%, phosphorus 0.05%, sulfur 0.03%, and the balance is iron.

[0029] The direction of the magnetic field of the magnetic treatment section is parallel to the surface of the slab to be magnetically treated.

[0030] In the magnetic treatment section, a low-frequency intermittent magnetic field is used for treatment, the fr...

Embodiment 3

[0034] A preparation process of high corrosion-resistant low carbon steel, adding a magnetic treatment section after the smelting section of low carbon steel slab is completed to obtain a magnetically treated slab, and then rolling the magnetically treated slab, and the rolled slab is processed. A continuous annealing process is performed to obtain a low-carbon steel semi-finished product, and then a laser shock process is performed on the surface of the low-carbon steel semi-finished product to obtain a highly corrosion-resistant low-carbon steel.

[0035] Low carbon steel consists of the following mass percentages: carbon 0.18%, silicon 0.06%, manganese 0.3%, phosphorus 0.04%, sulfur 0.02%, and the balance is iron.

[0036] The direction of the magnetic field of the magnetic treatment section is parallel to the surface of the slab to be magnetically treated.

[0037] In the magnetic treatment section, a low-frequency intermittent magnetic field is used for treatment, the fre...

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Abstract

The invention relates to the technical field of material preparation, in particular to a preparation technology for high-corrosion-resistance low-carbon steel. After a low-carbon steel slab smelting working section is completed, a magnetic treatment working section is added, a magnetic treatment slab is obtained, then, the magnetic treatment slab is rolled, the rolled slab is subjected to continuous annealing to obtain a low-carbon steel semi-finished product, the surface of the low-carbon steel semi-finished product is subjected to laser shock, and the high-corrosion-resistance low-carbon steel is obtained. According to the preparation technology, the corrosion rate of the final low-carbon steel in an acetic acid solution of which the pH value is 3.0 and the concentration is 0.056 mol / L can be optimal, and the corrosion rate is averagely reduced by 11.45%.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a preparation process of high corrosion-resistant low carbon steel. Background technique [0002] The main components of low carbon steel are Fe and C elements, which are usually obtained by heat treatment to obtain tempered low carbon martensite, pearlite or ferrite & cementite structure. The yield strength is 300-1200MPa. It is widely used in boilers and other fields. [0003] Corrosion damage is a common damage form of low carbon steel materials during use, which can cause huge direct losses to low carbon steel, and is an important problem to be solved urgently in materials science. The cause of corrosion is the chemical and electrochemical reaction of the mild steel material with environmental media (such as water, steam, air, gas, coal gas, etc.). Improving the corrosion resistance of low carbon steel materials can help extend the life of structures made of lo...

Claims

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Application Information

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IPC IPC(8): C21D8/02C21D10/00C21D1/04C21D1/26C22C38/02C22C38/04
CPCC21D1/04C21D1/26C21D8/021C21D10/005C22C38/02C22C38/04
Inventor 马璇
Owner SHENYANG NORMAL UNIV
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