18ME45B Metal Casting and Welding syllabus for ME



A d v e r t i s e m e n t

Module-1 Introduction & basic materials used in foundry 0 hours

Introduction & basic materials used in foundry:

Introduction:

Definition, Classification of manufacturing processes. Metals cast in the foundry-classification, factors that determine the selection of a casting alloy.

 

Introduction to casting process & steps involved:

Patterns:

Definition, classification, materials used for pattern, various pattern allowances and their importance.

 

Sand moulding:

Types of base sand, requirement of base sand. Binder, Additives definition, need and types; preparation of sand moulds. Melding machines- Jolt type, squeeze type and Sand slinger.

 

Study of important moulding process:

Green sand, core sand, dry sand, sweep mould, CO2mould, shell mould, investment mould, plaster mould, cement bonded mould.

 

Cores:

Definition, need, types. Method of making cores,

 

Concept of gating (top, bottom, parting line, horn gate) and risers (open, blind) Functions and types.

Module-2 MELTING & METAL MOLD CASTING METHODS 0 hours

MELTING & METAL MOLD CASTING METHODS:

Melting furnaces:

Classification of furnaces, Gas fired pit furnace, Resistance furnace, Coreless induction furnace, electric arc furnace, constructional features & working principle of cupola furnace.

 

Casting using metal moulds:

Gravity die casting, pressure die casting, centrifugal casting, squeeze casting, slush casting, thixocasting, and continuous casting processes.

Module-3 SOLIDIFICATION & NON-FERROUS FOUNDRY PRACTICE 0 hours

SOLIDIFICATION & NON-FERROUS FOUNDRY PRACTICE:

Solidification:

Definition, nucleation, solidification variables. Directional solidification-need and methods. Degasification in liquid metals-sources of gas, degasification methods.

 

Fettling and cleaning of castings:

Basic steps involved. Sand Casting defects- causes, features and remedies. Advantages & limitations of casting process

 

Nonferrous foundry practice:

Aluminium castings - advantages, limitations, melting of Aluminium using liftout type crucible furnace. Hardeners used, drossing, gas absorption, fluxing and flushing, grain refining, pouring temperature. Stir casting set up, procedure, uses, advantages and limitations

Last Updated: Tuesday, January 24, 2023