Title:
【発明の名称】車輪速度検知用歯車およびその製造方法
Document Type and Number:
Japanese Patent JP3371482
Kind Code:
B2
Abstract:
An inexpensive wheel speed measuring gear (sensor ring) having a high corrosion resistance. This sensor ring is made chiefly of sintered stainless steel. The surface portion of the sensor ring contains 5-25 atm.% phosphorus, 30-70 atm.% oxygen and 5-5.0 atm.% iron, and at least a part of this surface portion is amorphous. The surface portion is formed by dipping a sintered stainless steel material in a phosphate group-containing oil of a temperature of 15-70 DEG C.
Inventors:
Koji Ueda
Naoki Inui
Yoshinobu Takeda
Naoki Inui
Yoshinobu Takeda
Application Number:
JP23772693A
Publication Date:
January 27, 2003
Filing Date:
September 24, 1993
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
B22F5/08; C10M105/74; C10M141/10; B22F3/24; C23C8/52; C23C22/03; C23C26/00; G01P1/04; G01P3/488; (IPC1-7): C23C26/00; B22F3/24; B22F5/08
Domestic Patent References:
| JP58500899A |
Attorney, Agent or Firm:
Fukami Hisaro (3 outside)