Title:
REMOLTEN AND CHILLED METAL CAM SHAFT AND MANUFACTURE THEREOF
Document Type and Number:
Japanese Patent JPS60234167
Kind Code:
A
Abstract:
PURPOSE:To enhance the wear-resistance capability of a slide cam surface on a remolten and chilled cast iron cam shaft, by forming, over the entire periphery of the cam slide surface, a chill hardened layer which is formed by application of high density energy irradiation onto the remolten and chilled metal cam shaft. CONSTITUTION:A chill hardened layer 4 is formed, having a cementite, as a main phase, which is remolten by application of high density energy irradiation such as, for example, TIG arc, and the chill hardened layer 4 is formed over the entire periphery of a cam slide surface on a cast iron cam shaft having a direct cast structure 5 which is subjected to no chill hardening. With this arrangement, the sliding characteristics such as, for example, the wear-resistance capability and anti-scuffing ability may be improved.
Inventors:
NONOYAMA HIDEO
FUKUMIZU TOSHIHARU
MORITA AKIYOSHI
FUKUMIZU TOSHIHARU
MORITA AKIYOSHI
Application Number:
JP9165384A
Publication Date:
November 20, 1985
Filing Date:
May 07, 1984
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD
International Classes:
C21D5/00; C21D9/30; F16H53/02; (IPC1-7): C21D5/00; C21D9/30
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