Title:
METHOD OF MANUFACTURING ULTRA-HIGH-STRENGTH SPECIALS TUBE, CAPABLE OF EASILY ABSORBING SHOCK, FOR AUTOMOBILE REINFORCEMENT MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/116682
Kind Code:
A1
Abstract:
The present invention relates to a method of manufacturing an ultra-high-strength specials tube, capable of easily absorbing shock, for an automobile reinforcement material, the method comprising: a hollow steel tube preparation step of preparing a hollow steel tube, the interior of which is penetrated; a drawing step of drawing the hollow steel tube to have a predetermined deformed shape; a cutting step of cutting the drawn hollow steel tube to have a predetermined length; a heating step of heating the hollow steel tube cut to have the predetermined length, at the temperature of 950℃ or higher for 5 minutes; a die quenching step of inserting the heated hollow steel tube into a press die so as to press-mold and simultaneously cool the hollow steel tube; and a tempering step of re-heating, at a predetermined temperature, the hollow steel tube having gone through the die quenching step, so as to temper the hollow steel tube.
Inventors:
PARK JONGBAE (KR)
YOON CHUNHO (KR)
GU YOONSIK (KR)
YOON CHUNHO (KR)
GU YOONSIK (KR)
Application Number:
PCT/KR2018/015372
Publication Date:
June 11, 2020
Filing Date:
December 06, 2018
Export Citation:
Assignee:
HYUNDAI AUTO SOLUTION CO LTD (KR)
International Classes:
B21C37/15; B21C1/16; B21C37/08; C21D1/42; C21D9/00; C21D9/08
Foreign References:
| KR101052008B1 | 2011-07-27 | |||
| JP2000102820A | 2000-04-11 | |||
| JP2005282706A | 2005-10-13 | |||
| KR20120124630A | 2012-11-14 | |||
| JP2011121112A | 2011-06-23 |
Attorney, Agent or Firm:
JANG, Hyeseung (KR)
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