Steel for hot-rolled low carbon punching and producing method thereof

A production method and technology of final rolling temperature, applied in the field of hot-rolled low-carbon stamping steel and its production method, can solve the problems of low-carbon steel with low elongation and low elongation, and achieve low cost, high elongation, Effects that are less difficult to control

Inactive Publication Date: 2011-01-05
PANGANG GROUP RESEARCH INSTITUTE CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the elongation of the steel is low (about 35%), it is difficult to meet the needs of higher elongation low carbon steel

Method used

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Abstract

The invention relates to hot rolling low-carbon stamping steel and a manufacturing method thereof, belonging to the field of metallurgy. The technical problem the invention aims at solving is to provide a hot rolling low-carbon stamping steel with specific elongation A50 being more than or equal to 45% and a manufacturing method thereof. The weight percentages of the chemical components of the low-carbon stamping steel of the invention are as follows: C: 0.03-0.07%, Mn: 0.20-0.35%, Als: 0.015-0.08%, Ti: 0.004-0.020%, N: less than or equal to 0.0040%, Ti / N: less than or equal to 3.43, Cr: 0.40-0.60%, and the balance of Fe and unavoidable impurities. The low-carbon stamping steel of the invention can be rolled at relatively low finishing temperature, and has the advantages of low yield strength, high specific elongation and no generation of macrocrystal at the surface of strip steel, thus being applicable to various spare parts which need stamping for moulding.

Description

Hot-rolled low-carbon stamping steel and production method thereof technical field The invention relates to hot-rolled low-carbon stamping steel and a production method thereof, belonging to the field of metallurgy. Background technique In recent years, with the wide application of hot-rolled low-carbon stamping steel in construction, automobile and other industries, the research on the chemical composition and hot-rolling process of hot-rolled low-carbon stamping steel has also made great progress. There are related reports about changing the properties of hot-rolled low-carbon stamping steel by changing the chemical composition or hot-rolling process of hot-rolled low-carbon stamping steel. 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 impuri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/28C21D8/04
Inventor 李军王平利刘勇尤秀妆李正荣
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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