foundry technology unit i pattern moulding and core making introduction foundry as a manufacturing centre scope and development of foundry types of foundries pattern types of patterns pattern materials pattern ...
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...Foundry technology unit i pattern moulding and core making introduction as a manufacturing centre scope development of types foundries patterns materials allowances layout equipment sands properties selection additives used testing sand strength permeability moisture content shatter index mouldability compactability loss on ignition clay afs grain fineness number ii casting processes green process dry co no bake shell investment permanent pressure die gravity continuous electroslag squeeze slush thixocasting rheocasting cosworth magnetic impulse high vacuum sealed iii principles solidification thermodynamics liquid phase cooling curve analysis pure metal alloy thermal undercooling molar free energy kinetics nucleation phenomena homogeneous heterogeneous nucleating sites agents controlled dynamic growth during structure the interface normal by surface imperfections formation planar cellular dendritic equiaxed structures alloys short range long solidifying constitutional eutectic factors...