06ME73-Manufacturing Process – III |
PART – A |
UNIT I: |
INTRODUCTION AND CONCEPTS: Classification of metal working
processes, characteristics of wrought products, advantages and limitations of
metal working processes.Concepts of true stress, true strain, triaxial & biaxial
stresses. Determination of flow stress. Principal stresses, Tresca & Von-
Mises yield criteria, concepts of plane stress & plane strain.
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UNIT II: |
EFFECTS OF PARAMETERS: Temperature, strain rate, friction and
lubrication, hydrostatic pressure in metalworking, Deformation zone
geometry, workability of materials, Residual stresses in wrought products.
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UNIT III: |
FORGING: Classification of forging processes. Forging machines &
equipment. Expressions for forging pressures & load in open die forging and
closed die forging by slab analysis, concepts of friction hill and factors
affecting it. Die-design parameters. Material flow lines in forging. Forging
defects, Residual stresses in forging. Simple problems.
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UNIT IV: |
ROLLING: Classification of Rolling processes. Types of rolling mills,
expression for RoIling load. Roll separating force. Frictional losses in bearing
etc, power required in rolling, Effects of front & back tensions, friction,
friction hill. Maximum possible reduction. Defects in rolled products. Rolling
variables, simple problems.
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PART – B |
UNIT V: |
DRAWING: Drawing equipment & dies, expression for drawing load by
slab analysis, power requirement. Redundant work and its estimation, optimal
cone angle & dead zone formation, drawing variables, Tube drawing,
classification of tube drawing, simple problems.
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UNIT VI: |
EXTRUSION: Types of extrusion processes, extrusion equipment & dies,
deformation, lubrication & defects in extrusion. Extrusion dies, Extrusion of
seamless tubes. Extrusion variables, simple problem
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UNIT VII: |
SHEET & METAL FORMING: Forming methods, dies & punches,
progressive die, compound die, combination die. Rubber forming. Open back
inclinable press (OBI press), piercing, blanking, bending, deep drawing, LDR
in drawing, Forming limit criterion, defects of drawn products, stretch
forming. Roll bending & contouring, Simple problems
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UNIT VIII: |
HIGH ENERGY RATE FORMING METHODS: Principles, advantages
and applications, explosive forming, electro hydraulic forming,
Electromagnetic forming.
POWDER METALLURGY: Basic steps in Powder metallurgy brief
description of methods of production of metal powders, conditioning and
blending powders, compaction and sintering application of powder
metallurgy components, advantages and limitations.
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REFERENCE |
TEXT BOOKS: |
1. Mechanical metallurgy (SI units), by G.E. Dieter, Mc Graw Hill
pub.2001
2. Manufacturing Engineering and Technology by Serope
Kalpakjian and Stevan R.
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Reference Books |
1. Materials and Processes in Manufacturing by E.paul, Degramo,
J.T. Black, Ronald, A.K. Prentice -hall of India 2002
2. Principles of Industrial metal working process - G.W. Rowe,
CBSpub. 2002
3. Manufacturing Science, hy Amitabha Ghosh & A.K. Malik - East -
Westpress 2001
4. Theory of plasticity by Dr. Sadhu Sing
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