EXHAUST VALVE DEVICE AND GAS CUSHION MATERIAL

Japanese Patent JP2016053210

A

PROBLEM TO BE SOLVED: To provide a machine parts having an equivalent strength to a sintered product produced since compressed powder formed by one axis machining press etc. of metal powder is used as machine parts, thus being not required a sintering step and realized processing at a lower-temperature.SOLUTION: There is provided machine parts having pressed ring strength over 100 MPa, in which compressed powder is obtained by compression of ingredient powder comprising metal powder as main material capable of forming oxide coat, and the oxide coat is formed between particles of the metal powder of the compressed powder by vapor processing at 400 to 550°. There is provided machine parts in which the compressed powder has a compressed powder density of 5.0 to 7.6 g/cmin size measurement.EFFECT: Since processing temperature is lower than a standard sintering step, there is little size change and thus size correcting step by sizing after sintering may be deleted. Degree of freedom and easiness in product and mold is increased and energy upon processing may be reduced.SELECTED DRAWING: None

JPS5814502	[Title of the Invention] A high temperature-proof oxidation treatment method of polymerization money
JPS5230206	PROCESS FOR PRODUCTION OF WATCH CASES BY SINTERING AND FORGING
JP2014123653	RH DIFFUSION SOURCE AND MANUFACTURING METHOD THEREFOR AND PRODUCTION METHOD OF R-T-B-BASED SINTERED MAGNET

YASHIRO NAOKI
KAKO NORITAKA
OHIRA AKINARI

JP2014229131A

April 14, 2016

November 11, 2014

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NTN TOYO BEARING CO LTD

B22F3/24; B22F5/00; B22F1/102

JPS5763602A	1982-04-17
JPS51144313A	1976-12-11
JPH1081902A	1998-03-31
JP2013113220A	2013-06-10
JP2003213308A	2003-07-30
JPH1073132A	1998-03-17

Kunihiko Shiromura
Tsuyoshi Kumano

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