公开(公告)号：EP1498505B1

公开(公告)日：2012-05-30

申请号：EP03701075.8

申请日：2003-01-14

申请人： Nippon Steel Corporation ,  Namitei Co., Ltd. ,  OCC Corporation

发明人： OHASHI, Shoichi ,  DEMACHI, Hitoshi ,  MURAO, Masatsugu ,  HONDA, Michiyasu

IPC分类号： G02B6/44 ,  H01B7/14 ,  H01B7/18 ,  H01B11/22

CPC分类号： C22C38/06 ,  C21D8/06 ,  C21D9/50 ,  C22C38/02 ,  C22C38/04 ,  G02B6/4427 ,  G02B6/4429 ,  Y10S148/909 ,  Y10T428/12

摘要： A deformed wire for reinforcing a marine optical fiber cable used for the pressure-proof layer of the marine optical fiber cable and having a high strength of 1800 MPa or higher in tensile strength, characterized in that, by mass %, the requirement of 0.80 ≤ Ceq ≤ 1.80% is satisfied where C is 0.65 to 1.1% and Ceq = C + 1/4 Si + 1/5 Mn + 4/13 Cr, the number of shearing bands crossing the center axis of L-section is 20 pieces/mm or less per unit length of the center axis, an angle formed by the center axis and the shearing bands is within the range of 10 to 90°, the tensile strength is 1800 MPa or higher, the cross section is formed generally in a sector shape, a plurality of the generally sector shapes are combined with each other to form a circular hollow cross section for storing optical fibers, the surface is formed in an irregular satin-finished surface with a depth of 0.2 to 5μm, and welding parts are provided at least at one position in longitudinal direction.