ABSTRACT

Shallow trench isolation (STI) requires a high quality oxide with superior fill capability provided by High Density Plasma (HDP) oxide. Unfortunately, the HDP deposition process can create large within die topographies that are difficult to polish directly using conventional silica slurries. As a result, etch back integration schemes have traditionally been incorporated for STI polish. A more revolutionary approach is the use of Fixed Abrasive (FA) CMP . FA CMP allows direct STI polish with good planarizatio ....etc

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Abrasive Jet Machine

Introduction
Abrasive jet machining (AJM) is a non-traditional machining
process that can machine material without generating heat and
shock.
Abrasive jet machining (AJM) is commonly used for Cutting,
Cleaning, Drilling and Etching operation

Mechanism of AJM

Fine particles are accelerated in
gas stream .


The particles are directed towards
the focus of machining.

As the particle impacts the surface,
....etc

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Abrasive Waterjet Machining
Introduction to Waterjet
 Fastest growing machining process
 One of the most versatile machining processes
 Compliments other technologies such as milling, laser, EDM, plasma and routers
 True cold cutting process – no HAZ, mechanical stresses or operator and environmental hazards
 Not limited to machining – food industry applications
History
 Dr. Franz in 1950’s first studied UHP water cutting for forestry and wood cutting (pure WJ)
 1979 Dr. Mo ....etc

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Abrasive Jet Machining
abstract

Abrasive water jet machine tools are suddenly being a hit in the market since they are quick to program and could make money on short runs. They are quick to set up, and offer quick turn-around on the machine. They complement existing tools used for either primary or secondary operations and could make parts quickly out of virtually out of any material. One of the major advantage is that they donot heat the material. All sorts of intricate shapes are easy to make. They turns to be ....etc

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presented by:
C.VIGNESH


INFLUENCE OF WHISKER REINFORCEMENT ON THE ABRASIVE WEAR BEHAVIOR OF
SILICON NITRIDE- AND ALUMINA-BASED COMPOSITES
Abstract
 The abrasive wear of brittle materials is generally modeled as an inverse function of both the bulk hardness and fracture toughness.
 According to these models,an increase in the hardness or fracture toughness of a material will enhance its wear resistance.
 However,less is known about how whisker-reinforcement influences the properties that ....etc

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I am choto kumar ,
I want a full seminar of the topic Magneto Abrasive Flow Machining .I want a pdf file with diagram of the above topic.
i am doing btech in mechanical engg, i have to give a seminar of the above topic on sept 6. if u give me some guidence then i will do well in seminars.

....etc

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The recent increase in the use of hard, high strength and temperature resistant materials in engineering necessitated the development of newer machining techniques. Conventional machining or finishing methods are not readily applicable to the new materials like hastalloy, nitralloy, waspalloy, nimonics, carbides, ceramics etc.


Conventional machining processes when applied to these newer materials:
1. Are uneconomical,
2. Produce poor degree of surface finish and accuracy,
3. Produce some stress,
4. Highly insufficient.

Newer machin ....etc

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Can u please send me the detailed seminar report and the ppt of the topic Magneto Abrasive Flow Machining ....etc

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ABSTRACT
Study of new and cost effective finishing processes has alwaysbeen an area of keen interest to overcome the difficulties ofexisting finishing process. Magnetic Abrasive Finishing(MAF) is a process in which a mixture of non-ferromagneticabrasives and ferromagnetic iron particles is used to dofinishing operation with the aid of magnetic force. The ironparticles in the mixture are magnetically energized using amagnetic field. The iron particles form a lightly rigid matrixin which the abrasives are trapped. This ....etc

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hi boss
i wanted a report and ppt on abrasive jet machining
plz can u help me........ ....etc

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