Produced vehicle-mounted concrete tank body steel board and production method thereof

A production method and concrete technology, applied in the field of metallurgy, can solve problems such as poor wear resistance and short service life, and achieve the effects of reduced production costs, low production costs, excellent mechanical properties and formability

Inactive Publication Date: 2019-01-11
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the materials for making tanks in the domestic market generally have a relatively short service life, which is mainly reflected in poor wear resistance.

Method used

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  • Produced vehicle-mounted concrete tank body steel board and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] In this embodiment, the thickness of the steel plate for the vehicle-mounted concrete tank is 2.0 mm, and its chemical composition and mass percentage are: C: 0.15%, Si: 0.10%, Mn: 1.35%, P: 0.011%, S: 0.003%, Cu: 0.20%, Ti: 0.010%, Als: 0.020%, N: 0.0042%, and the balance is Fe and unavoidable impurities.

[0030] The production method for making steel plates for vehicle-mounted concrete tanks in this embodiment includes slab heating, high-pressure water descaling, controlled rolling and curling processes, and the specific process steps are as follows:

[0031] (1) Slab heating process: heating the slab to 1180°C;

[0032] (2) High pressure water descaling process: dephosphorization water pressure is 18.0MPa;

[0033] (3) Controlled rolling process: rough rolling is rolled by 5 rolling mills, and the exit temperature is 1060°C; finish rolling is rolled by 7 rolling mills, the finish rolling entrance temperature is 980°C, and the exit temperature is 840°C;

[0034] (4...

Embodiment 2

[0037] In this embodiment, the thickness of the steel plate for the vehicle-mounted concrete tank is 6.0mm, and its chemical composition and mass percentage are: C: 0.17%, Si: 0.15%, Mn: 1.42%, P: 0.013%, S: 0.005%, Cu: 0.25%, Ti: 0.019%, Als: 0.035%, N: 0.0040%, and the balance is Fe and unavoidable impurities.

[0038] The production method for making steel plates for vehicle-mounted concrete tanks in this embodiment includes slab heating, high-pressure water descaling, controlled rolling and curling processes, and the specific process steps are as follows:

[0039] (1) Slab heating process: heating the slab to 1220°C;

[0040] (2) High-pressure water descaling process: the pressure of phosphorus removal water is 19.0MPa;

[0041] (3) Controlled rolling process: rough rolling is rolled by 5 rolling mills, and the exit temperature is 1020°C; finish rolling is rolled by 7 rolling mills, the entrance temperature of finish rolling is 1000°C, and the exit temperature is 860°C; ...

Embodiment 3

[0045] In this embodiment, the thickness of the steel plate for the vehicle-mounted concrete tank is 10.0 mm, and its chemical composition and mass percentage are: C: 0.18%, Si: 0.20%, Mn: 1.50%, P: 0.015%, S: 0.010%, Cu: 0.21%, Ti: 0.025%, Als: 0.030%, N: 0.0060%, and the balance is Fe and unavoidable impurities.

[0046] The production method for making steel plates for vehicle-mounted concrete tanks in this embodiment includes slab heating, high-pressure water descaling, controlled rolling and curling processes, and the specific process steps are as follows:

[0047] (1) Slab heating process: heating the slab to 1240°C;

[0048] (2) High pressure water descaling process: dephosphorization water pressure is 22.0MPa;

[0049] (3) Controlled rolling process: rough rolling is rolled by 5 rolling mills, and the exit temperature is 1060°C; it is coiled by a hot coil box; the finish rolling is rolled by 7 rolling mills, the finish rolling entrance temperature is 1030°C, and the e...

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Abstract

The invention discloses a produced vehicle-mounted concrete tank body steel board and a production method thereof. The vehicle-mounted concrete tank body steel board contains the following chemical components in percentage by mass: 0.15%-0.18% of C, 0.10%-0.20% of Si, 1.35%-1.50% of Mn, P is less than or equal to 0.020%, Si less than or equal to 0.010%, 0.15%-0.25% of Cu, 0.010%-0.025% of Cu, 0.010%-0.025% of Ti, 0.020%-0.060% of Als, N is less than or equal to 0.0060% and the balance of Fe and unavoidable impurities. The production method comprises the following procedures: board blank heating, high-pressure water descaling, controlled rolling and reeling. The extension strength of the steel board is more than or equal to 500MPa, the yield strength is more than or equal to 400MPa, the hardness is more than or equal to 220HB, and the extension rate A is more than or equal to 20%; and the steel board has excellent mechanical property and forming property, is simple in process and low inproduction cost and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a steel plate for making a vehicle-mounted concrete tank and a production method thereof. Background technique [0002] Concrete mixer truck is a special truck used to transport concrete for construction. This type of truck is equipped with a cylindrical mixing drum to carry the mixed concrete. During the transportation process, the mixing drum will always be kept rotating to ensure that the carried concrete will not solidify. Most of them are made of formed steel plates and welding processes. During use, they are constantly in contact with mud and wear. Therefore, the steel plates used are required It has certain formability, good welding performance, high strength, toughness and wear resistance. [0003] At present, the materials for making tanks in the domestic market generally have a relatively short service life, which is mainly reflected in poor wear resista...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/16C22C38/14C22C38/06B21C37/02
CPCB21C37/02C22C38/02C22C38/04C22C38/06C22C38/14C22C38/16
Inventor 张晓磊王宝华程玉君包阔韩宇张贺佳高晓丽
Owner HEBEI IRON AND STEEL
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