JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

This course is mainly intended to introduce and explain various

moulding, casting techniques and equipment used. Principles of Solidification of casting, defects in castings and their remedies are also dealt in detail

Course Outcome

This course would pave a platform for students to develop a thorough

understanding on the casting technology, solidification of metals and alloys.

UNIT - I

Introduction to Foundry – Types of Foundries and Patterns: Materials for patterns, types of patterns; functions and pattern allowance. Moulding materials; moulding sands, properties and selection of materials and additives. Moulding Processes: Green and dry sand moulding; shell moulding, CO2 moulding. Core making. Plaster moulding, Gating Risering and their design.

UNIT - II

Casting Methods: Permanent mould casting, pressure die-casting, Gravity die casting, Vacuum die casting, centrifugal casting, Investment Casting, Squeeze casting and Composite Casting

UNIT - III

Melting and Solidification: Cupola and Induction Melting. Nucleation and growth. Freezing of metals and alloys. Dendritic freezing. Progressive and Directional Solidification. Melting of Gray Iron in cupola

UNIT - IV

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 - V

Casting Defects and Remedial Measures: Casting defects arising due to moulding, cores, melting and pouring practice. Inspection and Testing of castings

TEXT BOOKS:

• 1. Principles of Metal casting by Heine – Loper and Rosenthal, Tata Mc Graw Hill, 2 nd Edition.
• 2. Foundry Technology – Dharmendra Kumar & S.K.Jain, CBS Publisher, 2007.

REFERENCES:

• 1. Fundamentals of Metals Casting, P. C. Mukherjee, Oxford & IBH Pub. Co., 1988
• 2. Casting Technology and Cast Alloys – AK Chakrabarti – PHI 2011 Edition R16 B.TECH METALLURGY AND MATERIALS ENGG.