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Foundry
(Preparation of Casting)
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Need of Going for Casting
Conventional Machining Vs Casting
Use of Foundry
Play Fly & more
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Advantages :
Complex shapes
No (or) Low machiningRequirement
Good Mechanical propertiesThroughout the component
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Pattern
Making
Core
Making
Mould Sand
Preparation
Mould
Preparation
Raw
Material
Furnace
Melting /
Sample Testing
Sample check
& Pouring
Curing Knockout Degating
HeatTreatment
Shot
Blasting
Finishing
(Fettling)
TestingWeld Repair
Final
Testing
Process:
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Pattern Making :
* Allowances :
Shrinkage
Draft
Machining
Corrosion
* Pattern may be
- Single(or)
- Split
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Core Making :
Use of Core :
** Core making issimilar to mould maki
ng
Position of core in
mould
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Mould Sand Preparation :
Moulding Sand Mixer
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Mould Preparation :
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Raw Material :
50 % of Scrap from out side 50 % of Foundry Returns
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Furnace :
Induction
Furnace:
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Melting :
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Sample Check using Spectrometer:
Molten metal in to Ladle Molten metal in to Moulds
Pouring :
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Knockout :
** Separation of casting from sand mould& Removal of
cores
Knockout vibrator
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Degating :
Removal of Unwanted portions of casting
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Heat Treatment :
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Testing :
Destructive Testing :
Compression Testing
Hardness testing
Impact Testing
Mechanical Testing
Non Destructive Testing :
Radiographic Examination
Magnetic Particle Inspection
Liquid Penatrent Examination
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Heat Treatment :
