ME6004 Unconventional Machining Processes Lecture notes PPT

ME6004 syllabus is here.This post also covers the Lecture notes (Prepared By Mr.S.Senthil kumar, AP/Mech of the Unconventional Machining processes(Elective Paper for semester VI) Unit 1 Introduction. Take for your reference and try to get more marks in university examinations.

ANNA UNIVERSITY CHENNAI

REGULATION 2013

DEPARTMENT OF MECHANICAL ENGINEERING

ME6004 UNCONVENTIONAL MACHINING PROCESSES 

UNIT 1           INTRODUCTION

INTRODUCTION

Conventional machining process

Metal is removed by means of tool which is harder than work piece and they both are in contact with each other.

Demerits of conventional machining process

(i)Disposal and recycling of the chips are difficult and tedious process

(ii)        Large cutting forces are involved in this process

NEED FOR UCM

Unconventional manufacturing process

Unconventional machining process

Unconventional forming process

Need for unconventional machining process

 (i)Harder and difficult to machine materials

  (ii)Can be machined easily and precisely

CLASSIFICATION OF UCM

 Classification of UCM

(i)Based on type of energy required to shape the material

•Thermal energy methods

•Electrical energy methods

•Electro chemical energy methods

•Chemical energy methods

•Mechanical energy methods

(ii)Based on mechanisms involved

•erosion

•Ionic dissolution

•vaporization

(iii) Based on the source of energy required for material removal

•Hydro static pressure

•High current density

•High voltage

•Ionized material

(iv)Based on medium of transfer of energies

•High voltage particles

•Electrolyte

•Electron

•Hot gases

Process Selection

Points to be considered for correct selection of UCM are

(i)Physical parameters

(ii)Shapes to be machined

(iii)Process capability or machining characteristics

(iv)Economic consideration

Advantages of UCM

(i)Increases productivity

(ii)Reduces no. of rejected components

(iii)Close tolerance is possible

(iv)Toll material need not be harder than work piece

(v)Machined surface does not have residual stress

Limitations of UCM

(i)More expensive

(ii)Manufacturing cost is slow

Here the syllabus of the subject Unconventional Machining Processes.

ME6004   UNCONVENTIONAL MACHINING PROCESSES

OBJECTIVES:

· To learn about various unconventional machining processes, the various process parameters

and their influence on performance and their applications

UNIT I INTRODUCTION

Unconventional machining Process – Need – classification – Brief overview .

UNIT II MECHANICAL ENERGY BASED PROCESSES

Abrasive Jet Machining – Water Jet Machining – Abrasive Water Jet Machining - Ultrasonic

Machining.(AJM, WJM, AWJM and USM). Working Principles – equipment used – Process

parameters – MRR- Applications.

UNIT III ELECTRICAL ENERGY BASED PROCESSES

Electric Discharge Machining (EDM)- working Principle-equipments-Process Parameters-Surface Finish and MRR- electrode / Tool – Power and control Circuits-Tool Wear – Dielectric – Flushing – Wire cut EDM – Applications.

UNIT IV CHEMICAL AND ELECTRO-CHEMICAL ENERGY BASED PROCESSES

Chemical machining and Electro-Chemical machining (CHM and ECM)-Etchants – Maskant -

techniques of applying maskants - Process Parameters – Surface finish and MRR-Applications.

Principles of ECM- equipments-Surface Roughness and MRR Electrical circuit-Process Parameters- ECG and ECH - Applications.

UNIT V THERMAL ENERGY BASED PROCESSES

Laser Beam machining and drilling (LBM), plasma Arc machining (PAM) and Electron Beam

Machining (EBM). Principles – Equipment –Types - Beam control techniques – Applications.

TOTAL: 45 PERIODS

OUTCOMES:

· Upon completion of this course, the students can able to demonstrate different unconventional

machining processes and know the influence of difference process parameters on the

performance and their applications.

TEXT BOOKS:

1. Vijay.K. Jain “Advanced Machining Processes” Allied Publishers Pvt. Ltd., New Delhi, 2007

2. Pandey P.C. and Shan H.S. “Modern Machining Processes” Tata McGraw-Hill, New Delhi,

2007.

REFERENCES:

1. Benedict. G.F. “Nontraditional Manufacturing Processes”, Marcel Dekker Inc., New York,

1987.

2. Mc Geough, “Advanced Methods of Machining”, Chapman and Hall, London, 1998.

3. Paul De Garmo, J.T.Black, and Ronald.A.Kohser, “Material and Processes in Manufacturing”

Prentice Hall of India Pvt. Ltd., 8thEdition, New Delhi , 2001

For more study materials visit annaunivstudymaterials.blogspot.com