Process utilizing sheet billet continuous casting to manufacture low aluminum silicon calm carbon structural steel

Abstract

The invention relates to a process utilizing sheet billet continuous casting to manufacture a low aluminum silicon calm carbon structural steel, and belongs to the technical field of steel smelting processes. The technical scheme comprises a blast furnace molten iron process, a revolving furnace smelting process, an LF refining process and a sheet billet continuous casting process. The chemical components of the carbon structural steel is redesigned, the deoxidation alloying manner of the revolving furnace smelting process and the LF refining process of the idiomatic aluminum silicon calm carbon structural steel manufactured by the sheet billet continuous casting, under the premise that liquid steel fully deoxidizes, and the low aluminum silicon calm carbon structural steel in a sheet billet short process meeting a standard requirement is manufactured. The process provided by the invention has the beneficial effects that a sheet billet continuous casting process is adopted to manufacture the low aluminum silicon calm carbon structural steel, high quality hot rolling plates meeting the standard requirement for general carbon structures are manufactured through redesigning the chemical components and optimizing a deoxidizing alloying process, the production time is shortened, the production cost is reduced, and the huge economic benefits are created.

Description

Technical field [0001] The invention relates to a process for producing low-aluminum-silicon killed carbon structural steel by continuous casting of thin slabs, and belongs to the technical field of steel smelting technology. Background technique [0002] Since the 1980s, the thin slab continuous casting and rolling production line has developed rapidly due to its advantages such as low investment, quick results, low cost, and high yield rate. At present, the production capacity of thin slab continuous casting and rolling production lines in the world has reached nearly 80 million tons, and China accounts for about 40% of the economy. However, thin slab continuous casting has its own unique technological characteristics: the thickness of the slab is small (50-70mm), and the continuous casting Fast drawing speed, high cooling strength, short solidification time. In order to adapt to the above-mentioned continuous casting process characteristics and avoid the influence of subcutan...

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Problems solved by technology

In this way, the production of carbon structural steel for general structure is short, the production cycle is long, the manufacturing cost is increased, and the product function is redundant.

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