Ultrasonic machining

Ultrasonic machining

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  Gandhinagar Institute of technology AlAPresentation Subject:- PT (2161902) Topic name:- Ultrasonic machining Prepared by:- jani Parth (150120119051)
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   Contents 1. Introduction 2.Ultrasonic machine parts 3. Working 4. Advantages 5. Disadvantages 6. Applications
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  1. Introduction  Theroots of ultrasonic technology can be traced back to research on the piezoelectric effect conducted by Pierre Curie around 1880.  Also Known as Ultrasonic Impact Grinding  The Ultrasonic waves are sound waves of frequency higher than 20,000 Hz.
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  …  Vibrating toolat ultrasonic frequency.  Use of abrasive slurry.  Conversely, mechanical vibrations are obtained by applying electrical oscillations to the same crystals
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  2. Ultrasonic machineparts
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  3. Working
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  4. Advantages  Itcan be used machine hard, brittle, fragile and non conductive material.  No heat is generated in work, therefore no significant changes in physical structure of work material  It is burr less and distortion less processes
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  …  Non-metal (becauseof the poor electrical conductivity) that cannot be machined by EDM and ECM can very well be machined by USM.  It can be adopted in conjunction with other new technologies like EDM,ECG,ECM.
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   Disadvantages Low Metalremoval rate Tool wear rate is high due to abrasive particles. Tools made from brass, tungsten carbide, MS or tool steel will wear from the action of abrasive grit with a ratio that ranges from 1:1 to 200:1. USM can be used only when the hardness of work is more than 45 HRC.
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   Applications Used tomachine fragile components in which otherwise the scrap rate is high. Used for multistep processing for fabricating silicon nitride (Si3N4) turbine blades Used for machining hard, brittle metallic alloys, semiconductors, glass, ceramics, carbides etc.
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  …  Ferrites andsteel parts , precision mineral stones can be machined using USM  USM can be used to cut industrial diamonds  USM is used for grinding Quartz, Glass, ceramics  Cutting holes with curved or spiral centre lines and cutting threads in glass and mineral or metal-ceramics
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  … Used in machiningof dies for wire drawing, punching and blanking operations USM has been used for piercing of dies and for parting off and blanking operations. USM enables a dentist to drill a hole of any shape on teeth without any pain USM can perform machining operations like drilling, grinding and milling operations on all materials which can be treated suitably with abrasives.
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  reference 1. http://www.engineeringarticles.org/ultrasonic-machining-process- / 2. https://www.google.co.in/imghp?hl=en&tab=wi&authuser=0 3.http:// www.bullentech.com/contract-machining-services/ultrasonic-mac 4. https://www.slideshare.net/hareeshang/ultrasonic-machining 5. https://www.ikbooks.com/home/samplechapter? filename=215_Sample-Chapter.pdf