Method for preparing S500MC steel coil based on multi-mode sheet billet continuous casting and rolling production line, and product

A thin slab continuous casting and rolling production line technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of limited rolling mode, no advantages, narrow thickness range, etc. The effect of eliminating edge defects and short production lines

Inactive Publication Date: 2020-09-18
SHOUGANG CORPORATION
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  • Description
  • Claims
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Problems solved by technology

[0003] However, the thickness range of the S500MC steel coil produced by the current thin slab continuous casting and rolling production line is too narrow, the rolling mode that

Method used

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  • Method for preparing S500MC steel coil based on multi-mode sheet billet continuous casting and rolling production line, and product
  • Method for preparing S500MC steel coil based on multi-mode sheet billet continuous casting and rolling production line, and product
  • Method for preparing S500MC steel coil based on multi-mode sheet billet continuous casting and rolling production line, and product

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Embodiment 1

[0088] In this embodiment, 9 test groups are used. In the test groups 1-9, the S500MC steel coils are prepared by the preparation method based on the multi-mode thin slab continuous casting and rolling production line of the present invention;

[0089] 1. The molten iron is subjected to KR desulfurization treatment, converter smelting, LF refining, VD refining, and continuous casting in sequence to obtain the steel slab. The chemical components contained in the steel slab are shown in Table 1 in terms of mass percentage;

[0090] Table 1: Chemical composition contained in the steel slab of the present invention

[0091] serial number C(％) Si(%) Mn(%) Al(％) P(％) S(％) Nb(%) N(％) Ti(%) Test group 1 0.03 0.032 0.75 0.035 0.009 0.0020 0.01 0.004 0.066 Test group 2 0.038 0.035 0.60 0.030 0.008 0.0040 0.020 0.003 0.075 Test group 3 0.040 0.030 0.78 0.042 0.01 0.0030 0.018 0.003 0.015 Test group 4 0.11 0.025 1.1 ...

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Abstract

The invention belongs to the technical field of metal material processing, and particularly relates to a method for preparing an S500MC steel coil based on a multi-mode sheet billet continuous castingand rolling production line, and a product. The method for preparing the S500MC steel coil based on the multi-mode sheet billet continuous casting and rolling production line comprises the steps: smelting and continuous casting are conducted to obtain a sheet billet, the sheet billet is sequentially heated, subjected to scale removal before rough rolling, rough rolling, electromagnetic inductionheating, scale removal before finish rolling, finish rolling and laminar cooling, coiled and cooled, and the S500MC steel coil is obtained, wherein the sheet billet is prepared from the components inpercentage by mass: 0.03-0.15% of C, less than or equal to 0.05% of Si, 0.6-1.5% of Mn, 0.02-0.35% of Al, less than or equal to 0.010% of P, less than or equal to 0.005% of S, 0.01-0.10% of Nb, 0.015-0.15% of Ti, less than or equal to 0.005% of N, and the balance of iron and inevitable impurities. The method expands the thickness range of a final product of the S500MC steel coil and has the advantages of short production line, short process, energy conservation, emission reduction and cost lowering.

Description

technical field [0001] The invention belongs to the technical field of metal material processing and iron and steel, and specifically relates to a method for preparing S500MC steel coils based on a multi-mode thin slab continuous casting and rolling production line and its products. Background technique [0002] At present, high-strength steel has become a new generation of environmentally friendly materials because it can achieve weight reduction, energy saving and emission reduction while meeting safety and use requirements. It is widely used in construction machinery, automobile manufacturing, container manufacturing and other fields. In this context, the thin slab continuous casting and rolling line can produce thin hot-rolled strip with a thickness of about 0.8mm. The thin hot-rolled steel strip has excellent comprehensive properties, can replace cold-rolled plates after pickling, and reduces construction investment, energy consumption and environmental pollution of the...

Claims

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Application Information

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IPC IPC(8): B21B1/46B21B37/76B21B45/08C22C38/14C22C38/12C22C38/06C22C38/04
CPCB21B1/46B21B37/76B21B45/08C22C38/04C22C38/06C22C38/12C22C38/14
Inventor 李晓林肖宝亮缪成亮刘朋徐永先张明生关春阳李继新董占奎张杰张猛杜倩王志鹏张大伟
Owner SHOUGANG CORPORATION
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