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Anti-acid steel plate for storage equipment and preparation method of anti-acid steel plate

A steel plate and equipment technology, which is applied in the field of acid-resistant steel plate for storage equipment and its preparation, can solve the problems of corrosion storage equipment, storage equipment damage, increase storage costs, etc., and achieve good strength, toughness, acid resistance and low cost.

Inactive Publication Date: 2015-04-29
SUZHOU JIN YUAN OIL MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when it is used to store some acidic goods, it often corrodes the storage equipment, causing the storage equipment to be damaged in a short time and increasing the storage cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] This embodiment is an acid-resistant steel plate used for storage equipment. The composition and mass percentage of the steel plate are: C: 0.31%, Mn: 0.45%, Si: 0.07%, P: 0.006%, S: 0.002%, Nb : 0.06%, V: 0.07%, Ti: 0.05%, Al: 0.08%, N: 0.006%, H: 0.00020%, Cu: 0.012%, Cr: 0.4%, Mo: 0.23%, the balance is Fe and not Impurities to avoid;

[0056] In the steel plate of this embodiment, the first phase is ferrite, and the second phase is pearlite. The volume percentage of the second phase from the surface to 1 / 4 thickness is 2.5%, and the volume percentage of the second phase from 1 / 4 thickness to the center is 7.0%, and no band structure; the average grain diameter of ferrite from the surface to 1 / 4 thickness of the steel plate in this embodiment is 3.5 μm, the average diameter of pearlite clusters is 6.0 m, and the ferrite from 1 / 4 thickness to the center The average grain diameter of the vrite is 5.0 μm, and the average diameter of the pearlite group is 7.0 μm.

[005...

Embodiment 2

[0069] The acid-resistant steel plate used for storage equipment in this embodiment, the composition and mass percentage of the steel plate are: C: 0.32%, Mn: 0.46%, Si: 0.08%, P: 0.007%, S: 0.003%, Nb: 0.07 %, V: 0.08%, Ti: 0.06%, Al: 0.09%, N: 0.002%, H: 0.0001%, Cu: 0.013%, Cr: 0.5%, Mo: 0.24%, the balance is Fe and unavoidable impurities;

[0070] In the steel plate of this embodiment, the first phase is ferrite, and the second phase is pearlite. The volume percentage of the second phase from the surface to 1 / 4 thickness is 2.6%, and the volume percentage of the second phase from 1 / 4 thickness to the center is 7.3%, and no band structure;

[0071] The average grain diameter of ferrite from the surface to 1 / 4 thickness of the steel plate in this embodiment is 3.6 μm, the average diameter of pearlite clusters is 6.2 μm, and the average grain diameter of ferrite from 1 / 4 thickness to the center is 5.2 μm , The average diameter of the pearlite group is 7.2 μm.

[0072]The p...

Embodiment 3

[0084] The acid-resistant steel plate used for storage equipment in this embodiment, the composition and mass percentage of the steel plate are: C: 0.33%, Mn: 0.47%, Si: 0.09%, P: 0.008%, S: 0.005%, Nb: 0.08 %, V: 0.09%, Ti: 0.07%, Al: 0.1%, N: 0.002%, H: 0.00012%, Cu: 0.015%, Cr: 0.6%, Mo: 0.25%, the balance is Fe and unavoidable impurities;

[0085] In the steel plate of this embodiment, the first phase is ferrite, and the second phase is pearlite. The volume percentage of the second phase from the surface to 1 / 4 thickness is 2.8%, and the volume percentage of the second phase from 1 / 4 thickness to the center is 7.5%, and no band structure; the average grain diameter of ferrite from the surface to 1 / 4 thickness of the steel plate in this embodiment is 3.7 μm, the average diameter of pearlite clusters is 6.3 μm, and the ferrite from 1 / 4 thickness to the center The average grain diameter of the vrite body is 5.3 μm, and the average diameter of the pearlite group is 7.3 μm.

...

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Abstract

The invention provides an anti-acid steel plate for storage equipment and a preparation method of the anti-acid steel plate. The steel plate is prepared from the following components in percentage by mass: 0.31-0.33% of C, 0.45-0.47% of Mn, 0.07-0.09% of Si, 0.006-0.008% of P, 0.002-0.005% of S, 0.06-0.08% of Nb, 0.07-0.09% of V, 0.05-0.07% of Ti, 0.08-0.1% of Al, less than or equal to 0.006% of N, less than or equal to 0.00020% of H, 0.012-0.015% of Cu, 0.4-0.6% of Cr, 0.23-0.25% of Mo and the balance of Fe. According to the anti-acid steel plate, a reasonable two-phase ratio as well as fine ferrite and dispersively distributed pearlite of the steel plate can be obtained and the formation of banded structure is avoided; and without the banded structure, the acid resistance is improved.

Description

technical field [0001] The invention relates to a steel plate and a preparation method thereof, in particular to an acid-resistant steel plate used for storage equipment and a preparation method thereof. Background technique [0002] Storage equipment refers to technical devices and tools that can meet the needs of storage and storage of goods. Storage equipment is the main symbol of the level of storage and logistics technology. Modern storage equipment reflects the development of modern storage and logistics technology. Shelves in storage equipment are relatively commonly used equipment. Due to the storage needs of special materials, the use conditions and environment of shelves are becoming more and more harsh, and the thickness of steel plates is required to be thicker and thicker. Correspondingly, the technology of steel plates used in storage equipment The requirements are also constantly increasing. Especially when it is used to store some acidic goods, it often corr...

Claims

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Application Information

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IPC IPC(8): C22C38/28C21D8/02
CPCC21D8/0247C21D2211/005C21D2211/009C22C38/04C22C38/12C22C38/14C22C38/16C22C38/18
Inventor 王正勇邢婷
Owner SUZHOU JIN YUAN OIL MACHINERY
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