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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY
HYDERABAD
III Year B.Tech. Met.E. II-Sem T P C
3+1* 0 3
FOUNDRY TECHNOLOGY
UNIT I
Scope and development of Foundry. Types of foundries.
PATTERNS: Materials for patterns, types of patterns functions and pattern allowance. MOULDING MATERIALS: Moulding sands, properties and selection of materials and additives used.
UNIT II
CASTING PROCESSES AND EQUIPMENT : Green and dry sand moulding shell moulding, CO2 moulding. Core moulds and cores. Plaster mould casting, composite mould casting, Investment casting.
UNIT III:
Permanent mould casting, pressure die casting, Gravity die casting and centrifugal casting, Types of moulding equipment.
UNIT IV:
GATING AND RISERING: Gate nomenclature, gate types and types of risers.
UNIT V:
SOLIDIFICATION OF METALS: Nucleation crystal growth. Freezing of metals and alloys. Dendritic freezing. Coring and segregation, ingot defects, Flow of metals in moulds.
UNITI VI
MELTING OF FERROUS ALLOYS : ‘Melting of Gray iron and cupola. Cupola operation and control. Effect on chemical composition, carbon equivalent and effect of alloying elements on foundry characteristics. Melting of non-ferrous alloys: Melting of Aluminium and copper alloys production processes: Production of Gray Iron, ductile iron. Malleable iron castings.
UNIT VII
MODERN DEVELOPMENTS: Recently developed processes - v- forming full mould process - Furon-no-bake sand moulds and cores. Continuous casting. Cold setting and self setting processes.
UNIT VIII
CASTING DEFECTS: Casting defects arising due to moulding, coring, melting and pouring practice.
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| Author: India 22 Dec 2007 | Member Level: Diamond Points : 3 |
TEXT BOOKS :
1. Principles of Metal casting by Heine, Loper and Rosenthal.
2. Foundry Technology – Dhuvendra kumar & S.K.Jain
REFERENCES :
1. Metals Hand book Vol. 5 published by ASM, Ohio.
2. Foundry Technology-Jain
3. Foundry Technology Principle-Raman Rao
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