Innovative Powder Based Manufacturing Of High Performance Gears
Paper in 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.

full-density

microstructure

Gears

sintering

porosity

double pressing

HIP

inclusions

Author

Alireza Khodae

Royal Institute of Technology (KTH)

Maheswaran Vattur Sundaram

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Other publications Research

Michael Andersson

Höganäs

Arne Melander

Royal Institute of Technology (KTH)

Swerea

Annika Strondl

Swerea

Irma Heikkilä

Swerea

Artur Miedzinski

Höganäs

Lars Nyborg

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Other publications Research

MAGNUS AHLFORS

Quintus Technologies AB

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

Innovative powder based manufacturing of gear wheels with high performance (HIPGEAR)

VINNOVA (2013-05594), 2014-10-01 -- 2017-03-31.

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Subject Categories

Production Engineering, Human Work Science and Ergonomics

Manufacturing, Surface and Joining Technology

Metallurgy and Metallic Materials

Driving Forces

Sustainable development

Areas of Advance

Transport

Production

Materials Science

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9/15/2020

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