IDiyas

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10358690 B1

PDFFull Text
Date of Patent:
Jul. 23, 2019

Filed:

May. 26, 2015

Steel plate used for hot stamping forming, forming process of hot stamping and hot-stamped component

Applicant:

Easyforming Steel Technology Co., Ltd., Chongqing, CN;

Inventors:

Hongliang Yi, Liaoning, CN;

Pengju Du, Liaoning, CN;

Assignee:

EASYFORMING STEEL TECHNOLOGY CO., LTD., Chongqing, CN;

Attorney:

Michael Best & Friedrich LLP

Primary Examiner:

Jessee R Roe

Int. Cl.
CPC ...
C22C 38/04 (2006.01); C21D 9/48 (2006.01); B21D 37/16 (2006.01); C21D 8/04 (2006.01); C22C 38/06 (2006.01); C22C 38/38 (2006.01); C22C 38/58 (2006.01); C21D 6/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/20 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/42 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C21D 8/00 (2006.01); C21D 9/00 (2006.01); B21D 22/02 (2006.01); C21D 1/18 (2006.01); C21D 1/673 (2006.01);
U.S. Cl.
CPC ...
C21D 9/48 (2013.01); B21D 37/16 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/005 (2013.01); C21D 8/04 (2013.01); C21D 8/0405 (2013.01); C21D 9/0068 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/38 (2013.01); C22C 38/42 (2013.01); C22C 38/58 (2013.01); B21D 22/022 (2013.01); C21D 1/18 (2013.01); C21D 1/673 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01);
Abstract

A steel sheet used for hot stamping includes, by weight percent, 0.18˜0.42% of C, 4˜8.5% of Mn and 0.8˜3.0% of Si+Al with the balance being Fe and unavoidable impurities. The alloy elements of the steel sheet enable the actual measured value of the martensitic transformation start temperature after hot stamping to be ≤280° C. The method for manufacturing the component includes: heating the material to 700˜850° C. and then stamping; cooling it to the temperature that is 150˜260° C. below the martensitic transformation start temperature by cooling in a die, cooling by air, water, or other methods; heating the component to a temperature ranging from 160 to 450° C. and maintaining the temperature for 1 to 100000 seconds for heat treatment, and then cooling the component to room temperature. The formed component has a yield strength of ≥1200 MPa, a tensile strength of ≥1600 MPa and a total elongation of ≥10%.

Find Patent Forward Citations

Loading…