TWO-STAGE RUBBER-PAD BASED FORMING OF FAN ENGINE BEARING HOUSING

1 MALINOWSKI Tomasz
Co-authors:
1 PIEJA Tomasz 2 TRZEPIECINSKI Tomasz 3 ZABA Krzysztof
Institutions:
1 Pratt & Whitney Rzeszów, Rzeszów, Poland, EU
2 Rzeszow University of Technology, Faculty of Mechanical Engineering and Aeronautics, Rzeszów, Poland
3 AGH University of Science and Technology, Faculty of Non-ferrous Metals, Kraków, Poland, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
472-477
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
31 views / 8 downloads
Abstract

In this paper, the forming process of the bearing housing element of a fan engine is investigated. Because the bearing housing is subjected to corrosion and a heat-resistant environment, this part is made of AMS5604 stainless steel. Due to the specific mechanical properties of the AMS5604 alloy, that is, a high ratio of yield stress to ultimate tensile strength, the forming process must be realized under special conditions. To achieve a suitable shape and dimensional accuracy of the final part, the forming process is divided into two stages. Firstly, a rubber-pad forming process is applied. Next, the part heated to the temperature of 830 ºC is calibrated in a grease-lubricated stamping die. The distribution of the drawpiece shape error is obtained by the system GOM ATOS Core. The results of SEM metallographic evaluation and analysis of the chemical composition by using energy dispersive X-ray spectrometry are also presented.

Keywords: AMS5604; fan engine; rubber-pad forming; springback; stainless steel; warm forming
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