Title:
METHOD FOR MANUFACTURING HIGH-NITROGEN STEEL WIRE, AND OVERHEAD POWER LINE USING SAME
Document Type and Number:
WIPO Patent Application WO/2012/011622
Kind Code:
A1
Abstract:
Disclosed are a method for manufacturing a nonmagnetic high-nitrogen steel wire, and an overhead power line adopting the high-nitrogen steel wire as the core thereof. According to one embodiment, the method for manufacturing high-nitrogen steel wire comprises the steps of: injecting argon (Ar) gas to reach atmospheric pressure after having first adjusted the pressure to 6x10-5 torr for an initial vacuum using a pressurized vacuum induction melting (VIM) furnace; and injecting nitrogen gas to reach a pressure of 2 atmospheres after having first adjusted the pressure to 6x10-5 torr for a second vacuum, and melting a nitrogen steel alloy consisting of 25 to 35 wt % of Mn, 25 to 35 wt % of Cr, 10 to 20 wt % of Ni, 0.5 to 1.0 wt % of C, and 20 to 35 wt % of Fe, which are alloy elements constituting nitrogen steel. The high-nitrogen steel wire manufactured in this manner has a nitrogen content ratio higher than 12,000 ppm, excellent mechanical strength, and nonmagnetic characteristics. By using this high-nitrogen steel wire, an overhead aluminum power line with a nonmagnetic steel core for reducing power loss and increasing power transmission capacity can be provided.
Inventors:
KU, Jae Kwan (#Samsung Jangmi Apt, Sanbon-dong Gunpo-si, Gyeonggi-do 435-040, 435-040, KR)
Application Number:
KR2010/005069
Publication Date:
January 26, 2012
Filing Date:
August 02, 2010
Export Citation:
Assignee:
METAL LINK INC. (266-1, Suchon-riJangan-myeon, Hwaseong-si, Gyeonggi-do 445-944, 445-944, KR)
(주)메탈링크 (경기도 화성시 장안면 수촌리 266-1, 445-944 Gyeonggi-do, 445-944, KR)
(주)메탈링크 (경기도 화성시 장안면 수촌리 266-1, 445-944 Gyeonggi-do, 445-944, KR)
International Classes:
H01B1/02; H01B13/00; H02G1/02
Attorney, Agent or Firm:
EZ INTERNATIONAL PATENT & TRADEMARK LAW OFFICE (Suite 1511, Byucksan Digital Valley 6-cha481-4 Gasan-dong, Geumcheon-gu, Seoul 153-803, 153-803, KR)
Claims: