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PREVAIL CASTING PVT. LTD. WELCOMES DATE: SEPT. 20, 2006
OVER VIEW OF INVESTMENT CASTING (LOST-WAX PROCES) DEVELOPMENTS PROCESS
Conversion of Paper drg to AutoCAD drg Raster drgVector drg
3-d Model (Sand Casting ) provided by Customer to be converted to investment casting.
3d model converted to suit Investment Casting requirements. Advantage :1. Machining Allowance Reduced. 2. Pilot Holes provided on P.C.D for flanges to reduce machining time.
Wax pattern – 3 Patterns made from 3 different tools and assembled for next operation.
Design of Die for Aluminum Core and Cavity using I-DEAS software
Tool path generation designed by using Unigraphics Software to be transferred to Vertical Machining Center after verification
Tool path verification on Unigraphics Software
Machining of core die ON 5-AXIS VMC (MAKE : DECKEL MAHO-GERMANY)
Inspection of Die with precision measuring instruments.
Inspection of Surface finish for the Die
Modification of Die : Originally punch was fixed to the side plate causing practical problem while removal of wax pattern from the die. Now its modified by separating punch from the side plate
Injection of Wax into the die Opened Die with injected wax pattern.
Assembly of wax pattern with gate, runner and riser
First Layer of Ceramic Coating Coated wax pattern with approx. 10 to 14 coats
De-waxing of ceramic coated shell by dipping into liquid wax De-waxed shell
Samples taken during heat for chemical testing on spectrometer along with strip containing heat no. Grinding of Sample for spectro analysis
Testing of sample on spectroSpectro result for chemical analysis
Tested Scrap Tested Sample
Tapping of molten metal in to the ladle Pouring into ceramic shells
Knock-out of ceramics from casting
Weld Cutting of Gates & Runner of the casting
Heat Treatment: Solution Annealing
Grinding and Velvet Polishing
Microstructure analysis performed on Olympus Microscope equipped with digital camera analysing the structure by using automatic image analyser software to determine % of ferrite & Austenite
Physical Tesing by using UTM and Extensometer attached to the Computer. Test Piece
Computerized Extensometer giving graph of Stress Vs Strain
Removal of Gate and Runners on Lathe Machine Grinding of Gate
Fettling & Cleaning of Casting
Dye Penetration Test
Visual Inspection of Casting Hydro Testing of casting
Testing of Surface Finish
Casings in Sand Blasted Condition
Investment Foundry. TYPES OF FOUNDRY TYPES OF FOUNDRY 1. Sand Foundry 1. Sand Foundry 2. Investment Foundry 2. Investment Foundry Investment Foundry Process.
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INDIAN INSTITUTE OF TECHNOLOGY DELHI Submitted to: Submitted by: Prof. MP Gururajan Emrati Kumari (2008AMD3240) “INVESMENT CASTING”
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ADVANTAGES: INTRICATE SHAPES CAN BE MADE POSSIBLE TO CAST PRACTICALLY ANY MATERIAL TOOLS REQUIRED VERY SIMPLE & INEXPENSIVE LIMITATIONS: DIMENSIONAL ACCURACY.
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