Title:
CAM SHAFT MADE OF SPHERICAL GRAPHITE CAST IRON
Document Type and Number:
Japanese Patent JPS5850354
Kind Code:
A
Abstract:
PURPOSE:To eliminate blow holes by remelting and chilling at least a portion of cam surface of a cam section by a high energy density source. CONSTITUTION:A cam shaft comprises a cam section 1 and a shaft section 2 made of spherical graphite cast iron, and at least a portion 3 of cam surface of the cam section 1 is remelted and chilled by a high energy density source. Thus, anti-wear property of the cam shaft is improved without damaging the resiliency, and the cam section 1 is provided which has the surface without any blow holes.
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Inventors:
TAKAGI MUNEYA
Application Number:
JP14078081A
Publication Date:
March 24, 1983
Filing Date:
September 07, 1981
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD
International Classes:
C21D5/00; C21D1/09; C21D9/30; F16H53/02; (IPC1-7): C21D1/06; C21D5/00; C21D9/30
Domestic Patent References:
| JPS4527442Y1 | 1970-10-23 | |||
| JPS5457010A | 1979-05-08 |
Attorney, Agent or Firm:
Akashi Masatake