FORMABILITY ANALYSIS OF RUBBER PAD-BASED FORMING PROCESS OF DRAWPIECES

1 MALINOWSKI Tomasz
Co-authors:
1 PIEJA Tomasz 1 BĄK Artur 2 HOJNY Marcin 3 TRZEPIECINSKI Tomasz
Institutions:
1 Pratt & Whitney Rzeszow, Rzeszów, Poland, EU, artur.bak@pwrze.utc.com
2 AGH University of Science and Technology, Faculty of Metals Engineering and Industrial, Computer Science, Kraków, Poland, EU
3 Rzeszow University of Technology, Faculty of Materials Forming and Processing, Rzeszów, Poland, EU
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
440-445
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
79 views / 37 downloads
Abstract

In this article, the results of modifications of the forming process of the bearing housing of a turbine engine are presented. The bearing housing is one of the critical structural elements of a turbine engine and is made of AMS 5504 stainless steel. Due to the nature of the element operation, the permissible shape error of housing profile is 0.508 mm. The proposed modification of the element forming process consists of welding two coupled parts into one and the calibration of the profile. This process is replaced by two steps expanding the cone-shaped drawpiece with the use of the rubber pad forming process in a SAAB hydro-mechanical press. Eliminating one weld allows us to reduce the manufacturing costs of parts and also to improve the strength of the part. To optimise the expanding process of the cone-shaped drawpiece, the finite-element-based IMPETUS Afea system was used. Measurements of shape errors of the drawpiece were carried out using the GOM ATOS Core instrument, which is optimised for the 3D measurement of small- to medium-sized components.

Keywords: Finite element method, rubber-pad forming, stainless steel, turbine engine

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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