Casting processes
Introduction to
metal casting. patterns:
types, materials and
allowances.Moulding materials: moulding sand compositions and
properties, sand testing, types of moulds, moulding machines. Cores: function,
types, core making process, core-prints, chaplets. Elements of gating system
and risers and their design. Design considerations of castings. Melting
furnaces, cupola furnace, charge calculations, induction furnaces. Casting
processes: sand casting, shell mould casting, investment casting, permanent
mould casting, full mould casting, vacuum casting, die casting, centrifugal
casting, and continuous casting. Metallurgical considerations in casting,
Solidification of metals and alloys, directional solidification, segregation, nucleation
and grain growth, critical size of nucleus. Cleaning and finishing of castings