MANUFACTURING METHOD OF MARINE PROPELLER FOR IMPROVING FATIGUE PROPERTY BY SURFACE HARDENING HEAT TREATMENT AND MARINE PROPELLER THEREOF

PURPOSE: A marine propeller and a manufacturing method thereof including surface hardening heat treatment for improving fatigue property are provided to carry out uniform heat treatment over the propeller surface using a three-dimensional transfer device. CONSTITUTION: A manufacturing method of a ma...

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Bibliographic Details
Main Authors PARK, TAE DONG, KIM, DAE YOUNG, YOUN, JOONG GEUN
Format Patent
LanguageEnglish
Korean
Published 31.05.2010
Subjects
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
CHEMISTRY
FOUNDRY MOULDING
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:PURPOSE: A marine propeller and a manufacturing method thereof including surface hardening heat treatment for improving fatigue property are provided to carry out uniform heat treatment over the propeller surface using a three-dimensional transfer device. CONSTITUTION: A manufacturing method of a marine propeller comprises the steps of: melting a raw material for a propeller, solidifying the molten material and casting it, finish-cutting the surface of the cast product, carrying out partial surface heat treatment for reinforcement on the maximum load portion of the propeller, and carrying out partial surface heat treatment again in order to eliminate the residual stress.
Bibliography:Application Number: KR20080116081