Title:
【発明の名称】ギ ヤ
Document Type and Number:
Japanese Patent JP2000510909
Kind Code:
A
Abstract:
A powder metal gear wheel having a core density of at least 7.3 g/cc, and in one embodiment 7.4 to 7.6 g/cc and a hardened carburized surface. A method of manufacturing transmission gears comprises, sintering a powder metal blank to produce a core density of between 7.4 to 7.6 g/cc, rolling the surface of the gear blank to densify the surface, and then heating the rolled sintered part and carburizing in a vacuum furnace.
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Inventors:
Sivanus Rohis
Jones Peter
Jones Peter
Application Number:
JP54131797A
Publication Date:
August 22, 2000
Filing Date:
May 23, 1997
Export Citation:
Assignee:
Stack pole limited
International Classes:
B22F3/11; B22F3/24; F16H55/06; B22F5/08; B21H5/02; (IPC1-7): B22F5/08; B22F3/24; F16H55/06
Attorney, Agent or Firm:
Minoru Nakamura (6 outside)