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High volumetric mac...
High volumetric machining strategies for superalloy gasturbine components : Comparing conventional and nonconventional machining methods for efficient manufacturing
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- Holmberg, Jonas, 1976- (author)
- Högskolan Väst,RISE,Sweden,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW
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- Berglund, Johan (thesis advisor)
- RISE IVF AB
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- Wretland, Anders (thesis advisor)
- GKN Aerospace Engine Systems AB, Trollhättan
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- Beno, Tomas, 1969- (thesis advisor)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT)
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- Andersson, Joel, 1981- (thesis advisor)
- Högskolan Väst,Avdelningen för svetsteknologi (SV)
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- Johansson, Sten (opponent)
- Linköpings universitet, Linköping
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(creator_code:org_t)
- ISBN 9789188847751
- Trollhättan : University West, 2020
- English 233 s.
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Series: Ph D Thesis Production Technology 2020 No. 40
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Series: PhD Thesis ; 40
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Abstract
Subject headings
Close
- There is a strong industrial driving force to find alternative manufacturing technologies in order to make the production of aero engine components of superalloys even more efficient than it is today. Introducing new and nonconventional machining technologies, as well as enhanced utilisation of today's high volumetric manufacturing, allows taking a leap to increase the material removal rate and the productivity. However, the final goal is to meet there quirements set for today's machined surfaces.The objective with the present work has been performed to show how the conventional, Milling, and the non-conventional machining methods, Abrasive Water Jet Machining, AWJM, Laser Beam Machining, LBM, and Electrical Discharge Machining, EDM, affect the surface integrity. This knowledge can beused to define and optimise different manufacturing alternatives for existing orfuture production.The results show that it is possible to use the rough milling to a greater extent if the impact on residuals stresses and deformation is used when determine the machining allowance. This could have a great impact on the productivity. However, further improvement of the productivity requires an alternative method. For this reason, EDM and AWJM was evaluated and shown to be suitable alternatives to today's manufacturing methods, but both methods require post processing. The results showed that a combination of two post processes is required for addressing issues with residue, topography and residual stresses.The most promising and effective manufacturing strategy would be EDM or AWJM for rough machining followed by post processing either by finish millingor post processing by means of High-Pressure Water Jet Cleaning and shot peening. If EDM and AWJM are to be considered as finish machining operations, further development of the two methods are required.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- Alloy 718
- High volumetric machining
- Conventional and Nonconventional machining
- Material removal rate
- Post processing
- surface integrity
- Residual stress
- Microstructure
- Deformation
- Manufacturing
- Surface and Joining Technology
- Bearbetnings-
- yt- och fogningsteknik
- Production Technology
Publication and Content Type
- vet (subject category)
- dok (subject category)
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