ME8351 – NOTES & QP
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ME8351 – SYLLABUS
UNIT I METAL CASTING PROCESSES
Sand Casting : Sand Mould — Type of patterns — Pattern Materials — Pattern allowances –Moulding sand Properties and testing — Cores –Types and applications — Moulding machines– Types and applications; Melting furnaces : Blast and Cupola Furnaces; Principle of special casting processes : Shell — investment — Ceramic mould — Pressure die casting — Centrifugal Casting — CO2 process — Stir casting; Defects in Sand casting
UNIT II JOINING PROCESSES
Operating principle, basic equipment, merits and applications of: Fusion welding processes: Gas welding — Types — Flame characteristics; Manual metal arc welding — Gas Tungsten arc welding
— Gas metal arc welding — Submerged arc welding — Electro slag welding; Operating principle and
applications of: Resistance welding — Plasma arc welding — Thermit welding — Electron beam welding — Friction welding and Friction Stir Welding; Brazing and soldering; Weld defects: types, causes and cure.
UNIT III METAL FORMING PROCESSES
Hot working and cold working of metals — Forging processes — Open, impression and closed die forging — forging operations. Rolling of metals– Types of Rolling — Flat strip rolling — shape rolling operations — Defects in rolled parts. Principle of rod and wire drawing — Tube drawing — Principles of Extrusion — Types — Hot and Cold extrusion.
UNIT IV SHEET METAL PROCESSES
Sheet metal characteristics — shearing, bending and drawing operations — Stretch forming operations — Formability of sheet metal — Test methods –special forming processes-Working principle and applications — Hydro forming — Rubber pad forming — Metal spinning– Introduction of Explosive forming, magnetic pulse forming, peen forming, Super plastic forming — Micro forming
UNIT V MANUFACTURE OF PLASTIC COMPONENTS
Types and characteristics of plastics — Moulding of thermoplastics — working principles and typical applications — injection moulding — Plunger and screw machines — Compression moulding, Transfer Moulding — Typical industrial applications — introduction to blow moulding –Rotational moulding — Film blowing — Extrusion — Thermoforming — Bonding of Thermoplastics.