Surface Integrity in Laser Assisted Micro Milling (LAMM) of Inconel 718 PDF Download
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Author:
Publisher:
ISBN:
Category : Inconel
Languages : en
Pages : 86
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Author:
Publisher:
ISBN:
Category : Inconel
Languages : en
Pages : 86
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Author: Daniel James Brown
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 94
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Book Description
The development of additive manufacturing (AM) in the past decade has brought along with it a number of new opportunities and challenges when it comes to how parts are manufactured. While this development represents an increase in the capabilities and performance of the AM parts, much work and research still needs to be done in order to ascertain how to avoid the limitations that plague AM such as low dimensional accuracy, high surface roughness, and large tensile residual stress. Ongoing efforts to improve part quality through process optimization of parameters such as scan speed and laser power, post heat treatment, or machining, are currently being pursued to mitigate these limitations, and it is likely that the fabrication of a functional part lies within the use of all of these efforts. Little study has been done to characterize surface integrity of an as-SLM part followed by milling (e.g., hybrid SLM-milling). In this paper, surface integrity including surface roughness, microstructure, and microhardness have been characterized for the IN718 samples processed by the hybrid process. It has been found that surface integrity can be significantly improved by the hybrid SLM-milling route. To investigate the machinability of the deposited materials, energy consumption was collected and analyzed in terms of specific energy between dry and flood milling of as-SLM IN718, dry-milling of conventional IN718, and flood-milling of conventional IN718. Energy consumption was the lowest for both flood milling cases compared to the dry milling case, and the lowest for both as-SLM cases in comparison to the conventionally produced cases.
Author: Salar Tavakoli Manshadi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Machine-tools
Languages : en
Pages : 80
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Author: Asriza Che Ashari
Publisher:
ISBN:
Category : Metal-cutting tools
Languages : en
Pages : 133
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Book Description
Author: A.K.M. Nurul Amin
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659439933
Category :
Languages : en
Pages : 196
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Book Description
Inconel 718 is the most widely used in the aerospace industries, especially for gas turbine hot section components. Titanium alloys, on the other hand, have very high strength-to-weight ratio making them very suitable for aircraft engines and airframe manufacture. They account for 30% of the total engine mass in commercial and 40% in military projects. However, both these strategic materials have poor machinability, as a result of which they have dominated the major research interests in metal cutting industries in the past decades. One of the techniques to improve machinability is the use an external heat source during machining. LAM applications offered significantly lower cutting force, higher metal removal rate and smoother surface finish, however, high costs of lasers slowed down its implementation. A new approach is heat assisted machining using inducting heating suitable for end milling operation. This book reports a comparative analysis of machinability of these two very strategic materials and their behavior to induction heat assisted machining in terms of tool wear, cutting forces, surface roughness and vibration/chatter.
Author: Jonas Holmberg
Publisher:
ISBN: 9789187531729
Category :
Languages : en
Pages : 92
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Book Description
Author:
Publisher:
ISBN:
Category : Electric metal-cutting
Languages : en
Pages : 47
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Author:
Publisher:
ISBN:
Category : Machine-tools
Languages : en
Pages : 87
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Book Description
Author:
Publisher:
ISBN:
Category : Metal-cutting
Languages : en
Pages : 65
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Book Description
