A kind of steel with high r value and thick specification IF automobile and its production method

A production method and thick gauge technology, which are applied in the field of high r value thick gauge IF automotive steel and its production field, can solve the problem of no high quality IF steel product production method, etc. The effect of formability and mechanical properties
CN104120337BActive Publication Date: 2016-08-03SHOUGANG CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHOUGANG CORPORATION
Publication Date
2016-08-03

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Abstract

The invention relates to a high-r-value thick IF automotive steel and a production method thereof. The method comprises: desulfurizing molten iron, converter blowing, RH vacuum refining, and continuous casting to obtain continuous casting slabs; heating the continuous casting slabs rolling to obtain hot-rolled slabs; coiling hot-rolled slabs to obtain hot-rolled steel coils; uncoiling pickling of hot-rolled steel coils; cold-rolling hot-rolled steel coils after pickling to obtain cold-rolled steel sheets ; Anneal the cold-rolled steel plate in the continuous annealing furnace; smooth the cold-rolled steel plate after annealing; the high r-value thick specification IF automotive steel produced by this method has good formability and mechanical properties, and can meet the requirements of medium and high grades. Stamping performance requirements for automotive sheets.
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Description

technical field

[0001] The invention relates to the technical field of metal material processing, in particular to a high-r-value thick specification IF automotive steel and a production method thereof. Background technique

[0002] In recent years, IF steel has gradually become a new generation of stamping steel after boiling steel and aluminum killed steel due to its excellent deep drawing and non-aging properties, and it is a symbol of a country's production level of automotive steel plates. At present, the production of IF steel in my country has a certain scale, but it is still in the primary stage of development. Taking ordinary IF steel for automobile plates as an example, domestically produced IF steel can only meet the quality requirements of steel plates for middle and low-end cars and trucks, and high-quality steel plates for middle and high-end cars still need to be imported in large quantities, especially for cars with very strict surface quality requirements. ...

Claims

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