HOT PRESS FORMING PROCESS OF PLATED STEEL AND HOT PRESS FORMED ARTICLES USING THE SAME

Title:

HOT PRESS FORMING PROCESS OF PLATED STEEL AND HOT PRESS FORMED ARTICLES USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2011/081394

Kind Code:

A2

Abstract:

The present invention relates to a hot press forming process of plated steel and hot press formed articles using the same, in which the hot press forming process of plated steel is capable of suppressing the volatilization of a plated layer and the production of oxidized scales by providing a blank with an optimal condition for heat treatment, and of securing different strength and physical properties by differentiating temperatures during the secondary heating. The hot press forming process of the invention comprises: performing a primary heating on the entire plated steel and maintaining the state; following the maintaining step, performing a secondary rapid heating on the entire or part of the plated steel additionally; and hot press forming the secondarily heated plated steel and then cooling.

More Like This:

WO/1998/025713	METHOD OF FORMING AND PIERCING A TUBE
WO/2009/106571	METHOD FOR SHAPING FROM A BLANK OF A HARDENING MATERIAL WITH DIFFERENTIAL COOLING
JP2003247605	ELEMENT OF BELT FOR CONTINUOUSLY VARIABLE TRANSMISSION, MOLDING METHOD FOR ELEMENT OF BELT FOR CONTINUOUSLY VARIABLE TRANSMISSION, AND BELT FOR CONTINUOUSLY VARIABLE TRANSMISSION

Inventors:

KIM, Hong-Gee (700 Geumho-dongGwangyang, Jeollanam-do 545-711, 545-711, KR)
김홍기 (전라남도 광양시 금호동 700번지 광양제철소내, 545-711 Jeollanam-do, 545-711, KR)
CHO, Yeol-Rae (700 Geumho-dongGwangyang, Jeollanam-do 545-711, 545-711, KR)
조열래 (전라남도 광양시 금호동 700번지 광양제철소내, 545-711 Jeollanam-do, 545-711, KR)

Application Number:

KR2010/009394

Publication Date:

July 07, 2011

Filing Date:

December 28, 2010

Export Citation:

Click for automatic bibliography generation Help

Assignee:

POSCO (1 Koedong-dong, Nam-guPohang, Kyungsangbook-do 790-300, 790-300, KR)
주식회사 포스코 (경상북도 포항시 남구 괴동동 1번지, 790-300 Kyungsangbook-do, 790-300, KR)
KIM, Hong-Gee (700 Geumho-dongGwangyang, Jeollanam-do 545-711, 545-711, KR)
김홍기 (전라남도 광양시 금호동 700번지 광양제철소내, 545-711 Jeollanam-do, 545-711, KR)
CHO, Yeol-Rae (700 Geumho-dongGwangyang, Jeollanam-do 545-711, 545-711, KR)

International Classes:

B21D22/02; B30B15/34; C21D7/13

Attorney, Agent or Firm:

C&S LOGOS PATENT AND LAW OFFICE (13th Floor, Seocho-Pyunghwa Building1451-34 Seocho-dong, Seocho-gu, Seoul 137-070, 137-070, KR)

Download PDF:

View/Download PDF PDF Help

Previous Patent: AUSTENITE STEEL MATERIAL HAVING SUPERIOR DUCTILITY

Next Patent: METHOD AND DEVICES OF COMMUNICATING LOW DUTY CYCLE PATTERN INFORMATION TO MOBILE STATIONS