Hot rolling low carbon mild steel and production method thereof

A production method and technology for mild steel, applied in the field of metallurgy, can solve the problems of low elongation, difficult to meet elongation low carbon steel, etc., and achieve the effects of high elongation, low cost and strong operability
CN101503779AInactive Publication Date: 2009-08-12PANGANG GROUP RESEARCH INSTITUTE CO LTD +3
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PANGANG GROUP RESEARCH INSTITUTE CO LTD
Publication Date
2009-08-12
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to hot-rolled low-carbon mild steel and a production method thereof, and belongs to the field of metallurgy. The technical problem to be solved by the invention is to provide the hot-rolled low-carbon mild steel of which the elongation percentage A50 is more than or equal to 45 percent, and the production method thereof. The low-carbon mild steel comprises the following chemical compositions in percentage by weight: 0.02 to 0.07 percent of carbon, 0.15 to 0.30 percent of manganese, 0.015 to 0.08 percent of aluminum, 0.004 to 0.020 percent of titanium, less than or equal to 0.0040 percent of nitrogen, less than or equal to 3.43 of titanium / nitrogen, and the balance of iron and inevitable impurities. The low-carbon mild steel has the superior performances of low yield strength, high elongation percentage, no generation of coarse grains on the surface of strip steel, and the like, and is suitable for preparing various components requiring stamping forming.
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Description

technical field

[0001] The invention relates to hot-rolled low-carbon mild steel and a production method thereof, belonging to the field of metallurgy. Background technique

[0002] In recent years, with the wide application of hot-rolled low-carbon steel in construction, automobile and other industries, the research on the chemical composition and hot-rolling process of hot-rolled low-carbon steel has also made great progress. There are related reports about changing the properties of hot-rolled low-carbon steel by changing the chemical composition or hot-rolling process of hot-rolled low-carbon steel.

[0003] For example, the patent application with application number 200510012895.1 discloses a low-carbon steel rolled by ferrite process. The chemical composition of the steel is: C: 0.01~0.06%, Mn≤0.40%, S≤0.01%, P ≤0.03%, Si≤0.04%, Al: 0.01-0.05%, the balance is Fe and unavoidable impurities. At the same time, the steel can also contain Cr, B, Nb or Ti. The hot rolling...

Claims

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