JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY
II Year B.Tech. M.E. I-Sem T P C
4+1* 0 4
UNIT – I
CASTING : Steps involved in making a casting – Advantage of casting and its applications. – Patterns
and Pattern making – Types of patterns – Materials used for patterns, pattern allowances and their
construction, Principles of Gating, Gating ratio and design of Gating systems
UNIT – II
Solidification of casting – Concept – Solidification of pure metal and alloys, short & long freezing range
Risers – Types, function and design, casting design considerations, special casting processes 1) Centrifugal
2)Die, 3) Investment.
Methods of Melting : Crucible melting and cupola operation, steel making processes, special.
UNIT – III
A) Welding : Classification of welding process types of welds and welded joints and their
characteristics, design of welded joints, Gas welding, ARC welding, Forge welding, resistance
welding, Thermit welding and Plasma (Air and water ) welding.
B) Cutting of Metals: Oxy – Acetylene Gas cutting, water plasma. Cutting of ferrous, non-ferrous
UNIT – IV
Inert Gas welding, TIG & MIG, welding, Friction welding, Induction welding, Explosive welding, Laser
welding, Soldering & Brazing. Heat affected zones in welding;
welding defects – causes and remedies – destructive nondestructive testing of welds.
UNIT – V
Hot working, cold working, strain hardening, recovery, recrystallisation and grain growth, Comparison of
properties of Cold and Hot worked parts, Rolling fundamentals – theory of rolling, types of Rolling mills and
products. Forces in rolling and power requirements.
UNIT - VI
Stamping, forming and other cold working processes : Blanking and piercing – Bending and forming –
Drawing and its types – wire drawing and Tube drawing – coining – Hot and cold spinning – Types of
presses and press tools. Forces and power requirement in the above operations.
EXTRUSION OF METALS : Basic extrusion process and its characteristics. Hot extrusion and cold
extrusion - Forward extrusion and backward extrusion – Impact extrusion Hydrostatic extrusion.
Forging processes: Principles of forging – Tools and dies – Types Forging – Smith forging, Drop Forging
– Roll forging – Forging hammers : Rotary forging – forging defects.
UNIT - VIII
Processing of Plastics: Types of Plastics, Properties, applications and their Processing methods &
Equipment (blow &injection modeling)
TEXT BOOKS :
1. Manufacturing Engineering and Technology/Kalpakjin S/ Pearson Edu.
2. Manufacturing Technology / P.N. Rao/TMH
1. Production Technology / R.K. Jain
2. Process and materials of manufacturing –Lindberg/PE
3. Principles of Metal Castings / Roenthal.
4. Welding Process / Paramar /
5. Production Technology /Sarma P C /
6. Production Engineering – Suresh Dalela & Ravi Shankar / Galgotia Publications Pvt. Ltd.
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