Innovative Powder Based Manufacturing Of High Performance Gears
Paper i proceeding, 2016

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.

Gears

full-density

inclusions

microstructure

porosity

sintering

double pressing

HIP

Författare

Alireza Khodae

Kungliga Tekniska Högskolan (KTH)

Maheswaran Vattur Sundaram

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Michael Andersson

Hoganas AB

Arne Melander

Unknown organization

Annika Strondl

Unknown organization

Swerea

Irma Heikkilä

Swerea

Artur Miedzinski

Hoganas

Lars Nyborg

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

MAGNUS AHLFORS

Quintus Technologies AB

World Powder Metallurgy 2016 Congress and Exhibition, World PM 2016; Hamburg; Germany; 9 October 2016 through 13 October 2016

Ämneskategorier

Produktionsteknik, arbetsvetenskap och ergonomi

Bearbetnings-, yt- och fogningsteknik

Metallurgi och metalliska material

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Produktion

Materialvetenskap