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Innovative Powder Based Manufacturing Of High Performance Gears

Alireza Khodae ; Maheswaran Vattur Sundaram (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Michael Andersson ; Arne Melander ; Annika Strondl ; Irma Heikkilä ; Artur Miedzinski ; Lars Nyborg (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; MAGNUS AHLFORS
Proceedings of Wolrd PM2016 - PM Gears (2016)
[Konferensbidrag, refereegranskat]

There are strong driving forces towards high-performance gear wheels which can handle higher engine outputs, or allow more compact designs of transmissions. Today the performance and life of conventionally manufactured gear wheels are limited by factors such as inhomogeneous microstructure and distribution of inclusions. Powder metallurgy (PM) can solve some of these problems but has so far had limitations caused by porosity. In this paper a cost effective way to eliminate porosity by HIP-ing without canister has been evaluated with encouraging results. Parameters such as powder particle size, lubricant and double pressing have been evaluated in the PM route in order to get a gas tight surface enabling effective post HIP-ing. So far double pressing has given promising results. Challenges such as open porosity, surface porosity and inclusions are addressed in the paper.

Nyckelord: Gears, double pressing, sintering, HIP, full-density, porosity, microstructure, inclusions



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Denna post skapades 2016-10-14. Senast ändrad 2016-12-20.
CPL Pubid: 243420

 

Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik (2005-2017)

Ämnesområden

Materialvetenskap
Produktion
Transport
Hållbar utveckling
Produktionsteknik
Bearbetnings-, yt- och fogningsteknik
Metallurgi och metalliska material

Chalmers infrastruktur

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