Title:
BAINITE TYPE RAIL EXCELLENT IN SURFACE FATIGUE DAMAGE RESISTANCE AND WEAR RESISTANCE
Document Type and Number:
WIPO Patent Application WO/1999/036583
Kind Code:
A1
Abstract:
A high strength bainite type steel rail having improved surface fatigue damage resistance and wear resistance at a rail head portion required by a heavy load railway, containing specific components and exhibiting a bainite structure at a part thereof, characterized in that the sum of the areas occupied by carbides having major diameters within the range of 100 to 1,000 nm at an arbitary section of the bainite structure is 10 to 50 % of the area of an arbitrary section.
Inventors:
UEDA MASAHARU (JP)
UCHINO KOUICHI (JP)
IWANO KATSUYA (JP)
KOBAYASHI AKIRA (JP)
UCHINO KOUICHI (JP)
IWANO KATSUYA (JP)
KOBAYASHI AKIRA (JP)
Application Number:
PCT/JP1999/000102
Publication Date:
July 22, 1999
Filing Date:
January 14, 1999
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
UEDA MASAHARU (JP)
UCHINO KOUICHI (JP)
IWANO KATSUYA (JP)
KOBAYASHI AKIRA (JP)
UEDA MASAHARU (JP)
UCHINO KOUICHI (JP)
IWANO KATSUYA (JP)
KOBAYASHI AKIRA (JP)
International Classes:
C21D9/04; C22C38/18; C22C38/34; C22C38/38; (IPC1-7): C22C38/00
Foreign References:
| JPH08158014A | 1996-06-18 | |||
| JPH0734133A | 1995-02-03 | |||
| JPH0734132A | 1995-02-03 | |||
| JPH06306528A | 1994-11-01 | |||
| JPH06248347A | 1994-09-06 | |||
| JPH06158227A | 1994-06-07 | |||
| JPH05345955A | 1993-12-27 |
Attorney, Agent or Firm:
Tamura, Hiroaki (Asakusabashi 3-chome Taito-ku Tokyo, JP)
Download PDF: