Ultrahigh-strength steel laser tailor welded blank and forming process thereof

A technology of laser tailor welding and ultra-high-strength steel, applied in the field of material processing, to achieve the effects of simplifying assembly steps, improving collision resistance, and improving formability
CN102162574BInactive Publication Date: 2012-12-19SHANDONG JIANZHU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG JIANZHU UNIV
Publication Date
2012-12-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an ultrahigh-strength steel laser tailor welded blank and a forming process thereof. The forming process provided by the invention comprises the following steps: carrying out the laser tailor welding on ultrahigh-strength steel and high-strength steel according to the needed shape; then, delivering the obtained welded blank to a furnace filled with a protective gas and heating to 920-940 DEG C to be continued for at least 5 minutes; fully austenitizing; transferring the austenitized welded blank to a press machine to be rapidly molded and formed; cooling to 100-150 DEG C through pressurization quenching; and cooling along room temperature to obtain the needed parts. The hot stamping process of the laser tailor welded blank provided by the invention has the double advantages of the forming and hot stamping forming of the laser tailor welded blank and simultaneously solves the problems that the ultrahigh-strength steel is difficultly applied to the production ofautomobile structural components / framework components in a laser tailor welded blank mode.
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Description

technical field

[0001] The invention relates to the design and forming process of ultra-high-strength steel for automobiles, and belongs to the technical field of material processing. Background technique

[0002] With the increasingly prominent energy and environmental issues, and the improvement of people's requirements for the safety, reliability, and comfort of cars, major automakers are trying to improve the structural design of cars and find new alternative materials. The weight of the car; continuous improvement and adoption of new parts manufacturing processes to improve product quality.

[0003] Tailor Welded Blanks (TWBs) is to weld several steel plates of different materials, thicknesses and coatings into one piece to meet the different requirements of parts for material properties. Laser welding is ideally suited for the production of tailor-welded blanks due to several significant advantages. The use of laser tailor welded blanks not only reduces the manufactu...

Claims

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