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A continuous plate production line for hot-rolled coils

A production line and plate technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of low efficiency of impurity treatment, many spots on the surface of plates, affecting the production process of plates, etc., and achieve good impurity removal effect, Easy processing and winding, good toughness

Active Publication Date: 2022-04-19
河北新金轧材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a continuous plate production line for hot-rolled coils, which can effectively solve the problem that the processing efficiency of impurities in molten steel in current hot-rolled coil production lines in plate production is not high, and there are impurities in steel billets, resulting in There are many miscellaneous spots on the surface of the board, which affects the production process of the board

Method used

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  • A continuous plate production line for hot-rolled coils
  • A continuous plate production line for hot-rolled coils
  • A continuous plate production line for hot-rolled coils

Examples

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Effect test

Embodiment 1

[0038] Embodiment 1: as Figure 1-2 As shown, the present invention provides a technical solution, a continuous plate production line for hot-rolled coils, including the following production process:

[0039] S1. Molten steel pretreatment: add desulfurization and dephosphorization agent to molten steel for desulfurization and dephosphorization;

[0040] S2. Smelting and casting process: after desulfurization and dephosphorization in the LF furnace again, it is sent to the vacuum refining furnace for refining, and then sent to the continuous casting machine to cast the billet;

[0041] S3. Rolling process: the steel billet is sent to the rough rolling mill, the hot coil mill and the finishing mill respectively, and the rough rolling, hot coil and finishing rolling are carried out to form a thin plate;

[0042] S4. Coil plate detection process: after coiling by coiler, then shear, and finally test the properties of the plate.

[0043] In S1, the solid impurities in the molten ...

Embodiment 2

[0062] Embodiment 2: as Figure 1-2 As shown, the present invention provides a technical solution, a continuous plate production line for hot-rolled coils, including the following production process:

[0063] S1. Molten steel pretreatment: add desulfurization and dephosphorization agent to molten steel for desulfurization and dephosphorization;

[0064] S2. Smelting and casting process: after desulfurization and dephosphorization in the LF furnace again, it is sent to the vacuum refining furnace for refining, and then sent to the continuous casting machine to cast the billet;

[0065] S3. Rolling process: the steel billet is sent to the rough rolling mill, the hot coil mill and the finishing mill respectively, and the rough rolling, hot coil and finishing rolling are carried out to form a thin plate;

[0066] S4. Coil plate detection process: after coiling by coiler, then shear, and finally test the properties of the plate.

[0067] In S1, the solid impurities in the molten ...

Embodiment 3

[0086] Embodiment 3: as Figure 1-2 As shown, the present invention provides a technical solution, a continuous plate production line for hot-rolled coils, including the following production process:

[0087] S1. Molten steel pretreatment: add desulfurization and dephosphorization agent to molten steel for desulfurization and dephosphorization;

[0088] S2. Smelting and casting process: after desulfurization and dephosphorization in the LF furnace again, it is sent to the vacuum refining furnace for refining, and then sent to the continuous casting machine to cast the billet;

[0089] S3. Rolling process: Send the steel billet into rough rolling mill, hot coil mill and finishing mill respectively, and carry out rough rolling, hot coil and finish rolling to form thin plate

[0090] S4. Coil plate detection process: after coiling by coiler, then shear, and finally test the properties of the plate.

[0091] In the desulfurization and dephosphorization process in S1, the blowing...

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Abstract

The invention discloses a continuous plate production line for hot-rolled coils, which includes the following production process: S1, molten steel pretreatment: adding desulfurization and dephosphorization agents to molten steel for desulfurization and dephosphorization, S2, refining and casting process: reheating in LF furnace After desulfurization and dephosphorization, it is sent to the vacuum refining furnace for refining, and then sent to the continuous casting machine to cast the billet. S3. Rolling process: the billet is sent to the rough rolling mill, hot coil mill and finishing mill respectively for rough rolling, hot coil and finishing mill. Rolling into a thin plate, S4, coil detection process: use a coiler to coil, then shear, and finally detect the properties of the plate. The present invention removes impurities twice during pretreatment of the molten steel, and uses it before refining. Magnesium powder and lime powder are mixed to remove impurities from molten steel again, so that the effect of removing impurities in molten steel is good. First, impurities are removed through oxides, and then impurities are removed through magnesium powder, which has high efficiency, saves the use of magnesium powder, saves costs, and improves The processing technology of hot-rolled sheet.

Description

technical field [0001] The invention relates to the technical field of hot-rolled coils, in particular to a continuous plate production line for hot-rolled coils. Background technique [0002] Hot coil is hot-rolled coil. It uses slab as raw material. After heating, it is made into strip steel by rough rolling mill and finishing mill. The hot steel strip coming out of the last rolling mill of finishing rolling is cooled by laminar flow to The temperature is fixed, and the coiler is rolled into a steel strip coil, and the cooled steel strip coil is processed into a steel plate, a flat coil and a slitting steel strip product through different finishing lines according to the different needs of the user; [0003] However, the processing efficiency of impurities in molten steel in the current hot-rolled coil production line in plate production is not high. Impurities exist in steel billets, resulting in more impurities on the surface of the plate, which affects the production pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/26B21B1/34B21B1/46B21B37/74B21B45/08B21B45/02B21B15/00C21C7/064C21C1/02
CPCB21B1/26B21B1/34B21B1/463B21B37/74B21B45/08B21B45/0218B21B15/00C21C7/0645C21C1/025B21B2001/225B21B2015/0057B21B2201/06
Inventor 郭平利任千学牛占平
Owner 河北新金轧材有限公司