Title:
DIFFERENT-STRENGTH STEEL WELDING COMPONENT WITH ALUMINUM OR ALUMINUM-ALLOY PLATING AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2020/200110
Kind Code:
A1
Abstract:
Disclosed is a different-strength steel welding component with an aluminum or aluminum-alloy plating. The different-strength steel welding component is formed by means of butt welding of a high-strength steel plate and a low-strength steel plate, and each of the high-strength steel plate and the low-strength steel plate comprises a base body and at least one pure aluminum or aluminum-alloy plating on a surface of the base body. The components of the base body of the high-strength steel plate, in percentages by weight, are: 0.08-0.8% of C, 0.05-1.0% of Si, 0.1-5% of Mn, P < 0.3%, S < 0.1%, Al < 0.3%, Ti < 0.5%, 0.0005-0.1% of B, 0.01-3% of Cr, and the remaining components are Fe and inevitable impurities. The components of the base body of the low-strength steel plate, in percentages by weight, are: 0.03-0.1% of C, 0-0.3% of Si, 0.5-2.0% of Mn, P < 0.1%, S < 0.05%, Al < 0.1%, 0-0.1% of Cr, 0-0.05% of Ti, and the remaining components are Fe and inevitable impurities. The tensile strength of a welding seam of the welding component after hot stamping is greater than the tensile strength of a low-strength steel base metal, and the elongation is greater than 4%, such that application requirements of the welding component in the field of automobile hot stamping are met. The present invention also relates to a method for manufacturing a different-strength steel welding component with an aluminum or aluminum-alloy plating, a different-strength steel welding component with an aluminum or aluminum-alloy plating that is prepared by means of the method, and a welding wire used in the method.
More Like This:
Inventors:
PAN HUA (CN)
LIU CHENGJIE (CN)
LEI MING (CN)
WU YUE (CN)
SUN ZHONGQU (CN)
JIANG HAOMIN (CN)
LIU CHENGJIE (CN)
LEI MING (CN)
WU YUE (CN)
SUN ZHONGQU (CN)
JIANG HAOMIN (CN)
Application Number:
PCT/CN2020/081743
Publication Date:
October 08, 2020
Filing Date:
March 27, 2020
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
B23K26/26; B23K26/12; B23K26/322; C22C38/02; C22C38/04; C22C38/06; C22C38/28; C22C38/32; C22C38/38
Foreign References:
| CN106794671A | 2017-05-31 | |||
| CN105163895A | 2015-12-16 | |||
| CN106334875A | 2017-01-18 | |||
| CN108838541A | 2018-11-20 | |||
| CN106687248A | 2017-05-17 | |||
| US20150034615A1 | 2015-02-05 | |||
| US20040200813A1 | 2004-10-14 | |||
| CN101426612A | 2009-05-06 | |||
| US20180326538A1 | 2018-11-15 | |||
| US20150030382A1 | 2015-01-29 | |||
| JP2008105057A | 2008-05-08 | |||
| US20140076470A1 | 2014-03-20 |
Other References:
SUDER W. J.; WILLIAMS S. W.: "Investigation of the effects of basic laser material interaction parameters in laser welding", JOURNAL OF LASER APPLICATIONS, LASER INSTITUTE OF AMERICA, US, vol. 24, no. 3, 1 August 2012 (2012-08-01), US, pages 32009 - 032009-10, XP012163045, ISSN: 1042-346X, DOI: 10.2351/1.4728136
BHARTI A.: "Laser welding", BULLETIN OF MATERIALS SCIENCE, vol. 11, no. 2-3, 1 November 1988 (1988-11-01), pages 191 - 212, XP055834053
NICKLAS EAGER: "TWB requirements in hot forming steels", MASTER’S THESIS IN MATERIALS ENGINEERING, 2018, CHALMERS UNIVERSITY OF TECHNOLOGY, XP055835689, Retrieved from the Internet
See also references of EP 3815837A4
BHARTI A.: "Laser welding", BULLETIN OF MATERIALS SCIENCE, vol. 11, no. 2-3, 1 November 1988 (1988-11-01), pages 191 - 212, XP055834053
NICKLAS EAGER: "TWB requirements in hot forming steels", MASTER’S THESIS IN MATERIALS ENGINEERING, 2018, CHALMERS UNIVERSITY OF TECHNOLOGY, XP055835689, Retrieved from the Internet
See also references of EP 3815837A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
Download PDF: