Title:
MOULDING METHOD FOR HIGHHDENSITY POWDERED METAL PRODUCT
Document Type and Number:
Japanese Patent JPS5214504
Kind Code:
A
Abstract:
A process of forming powdered metal into finished or near-finished, high-strength, structural parts of complex configurations wherein a metal powder preform is heated to a temperature of approximately 2100 DEG F and formed at relatively low pressures in the range of approximately 19 to 39 tons per square inch over a short contact time interval in a preheated forming die composed of a high temperature, high strength superalloy to produce a metal part having a density of 99+% of theoretical density. The preform is formed from a prealloyed metal powder blended with graphite and a lubricant, compacted to a density in the range of 70 to 80% of theoretical density, and heat treated for oxide reduction and solutioning of the graphite therein. The preform must be rapidly transferred from the heat treatment operation to the preheated forming die to minimize reoxidation and cooling of the preform.
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Inventors:
JIYON RUSHIAN ZANBOROO
RUDORUFU MAACHIN HENPURU
RUISU TEII FUENGU
RUDORUFU MAACHIN HENPURU
RUISU TEII FUENGU
Application Number:
JP8808276A
Publication Date:
February 03, 1977
Filing Date:
July 23, 1976
Export Citation:
Assignee:
BORG WARNER
International Classes:
B22F3/02; B22F3/16; B22F3/17; (IPC1-7): B22F3/12
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