Title:
ULTRA-HIGH STRENGTH GALVANIZED STEEL SHEET WITH EXCELLENT WELDABILITY AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/224200
Kind Code:
A1
Abstract:
The present invention provides a manufacturing method for an ultra-high strength galvanized steel sheet with excellent weldability, the method comprising a step of annealing a cold-rolled steel sheet in an annealing furnace, wherein the annealing time (A) to perform the annealing and the moisture concentration (B) in the annealing furnace are controlled on the basis of the product of the positive square root of the annealing time (A1/2) and the value of the natural logarithm of the reciprocal of the moisture concentration ((ln(1/B)).
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Inventors:
PARK MIN SUH (KR)
LA JOUNG HYUN (KR)
YOOK WAN (KR)
JANG MIN HO (KR)
LA JOUNG HYUN (KR)
YOOK WAN (KR)
JANG MIN HO (KR)
Application Number:
PCT/KR2022/019624
Publication Date:
November 23, 2023
Filing Date:
December 05, 2022
Export Citation:
Assignee:
HYUNDAI STEEL CO (KR)
International Classes:
C23C2/02; C21D8/02; C22C38/00; C22C38/02; C22C38/04; C22C38/12; C22C38/14; C23C2/06; C23C2/40
Foreign References:
| KR20210062887A | 2021-06-01 | |||
| KR20170071658A | 2017-06-26 | |||
| KR20190073200A | 2019-06-26 | |||
| JP2018016851A | 2018-02-01 | |||
| KR101824823B1 | 2018-02-01 |
Attorney, Agent or Firm:
LEE, In Haeng et al. (KR)
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