Ultrasonic Assisted Deep Drilling of Super-Alloy and Comparison With Electro Discharge Drilling Method

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Baghlani, Valid | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43639 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Akbari, Javad
Abstract:
Drilling super alloys with a good hole quality and acceptable surface finish is a constant challenge in modern industries dealing with such materials. Ultrasonic assisted drilling is a modern and nonconventional method of drilling which has attracted many researchers attention recently. In this study deep drilling on Inconel 738 LC is done using ultrasonic assisted drilling technique and the results are compared with those of Electro Discharge Machininng or EDM method. The results show that Ultrasonic Assisted Drilling or UAD is an appropriate alternative for EDM of Inconel. The whole process time is decrease dimensional accuracy is improved and surface roughness is decreased significantly. Tool wear and edge chippingare decreased in UAD in Comparison with Conventional drilling
Keywords:
Superalloys ; Inconel 738 Nickel Based Superalloy ; Hole Drilling ; Ultrasonic-Vibration ; Surface Roughness ; Ultrasonic Assisted Deep Drilling

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