Title:
METHOD FOR CARRYING OUT HIGH FREQUENCY TEMPERING OF CARBURIZED MEMBER
Document Type and Number:
Japanese Patent JPS5974226
Kind Code:
A
Abstract:
PURPOSE: To make the hardness of a carburized member, especially its screw part proper after heat treatment by heating the member once at high output of a temp. required to carry out high frequency tempering, and heating it at low output.
CONSTITUTION: A carburized member 1 to be treated is put in the heating coil 2 of a high frequency tempering apparatus, and high frequency current is supplied to the coil 2 to heat chiefly the part 3 of the member 1 to be treated. At this time, the member 1 is heated at high output to a temp. required to carry out high frequency tempering, that is, 600°CW the transformation point, and it is heated at low output. By the two-step heating the member 1 is held at said temp. for a sufficient time.
Inventors:
UEDA TAKANORI
KASHIHARA KENJI
WATAHASHI AKIRA
KASHIHARA KENJI
WATAHASHI AKIRA
Application Number:
JP18352982A
Publication Date:
April 26, 1984
Filing Date:
October 19, 1982
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD
International Classes:
C23C8/22; C21D1/10; C21D9/00; (IPC1-7): C21D1/42; C21D9/00; C23C11/12