Title:
RAW MATERIAL POWDER, SINTERED GEAR PRODUCTION METHOD, AND SINTERED GEAR
Document Type and Number:
WIPO Patent Application WO/2019/181453
Kind Code:
A1
Abstract:
[Problem] To provide a raw material powder from which it is possible to produce a sintered gear with high dimensional accuracy without using dedicated equipment and without performing secondary processing (postprocessing), a sintered gear production method that uses said raw material powder, and a sintered gear. [Solution] This raw material powder, used to produce a sintered gear 1, contains raw material particles with a particle diameter less than or equal to the module [mm] of the sintered gear 1. The raw material particles include first particles and second particles having an average particle diameter smaller than the average particle diameter of the first particles, and the second particles make up 0.5-7.5 parts by mass out of 100 parts by mass of the raw material particles. Further, defining D1 [mm] as the average particle diameter of the first particles and D2 [mm] as the average particle diameter of the second particles, D1/D2 is preferably 5-20.
Inventors:
KADOMURA TAKESHI (JP)
Application Number:
PCT/JP2019/008336
Publication Date:
September 26, 2019
Filing Date:
March 04, 2019
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
B22F1/00; B22F5/08; B22F9/08; F16H55/06
Domestic Patent References:
| WO2017175772A1 | 2017-10-12 |
Foreign References:
| JP2002520485A | 2002-07-09 | |||
| JP2006152409A | 2006-06-15 |
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