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

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...

AI Technical Summary

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 can be realized is limited, the production line is too long, the process is too long, and the energy saving, emission reduction and life In terms of cycle, there is no advantage

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