Application
Automobiles
Railways
Air Compressors
Sewing machines
Control Valves
Sanitary Ware
Dairy Machinery
Spare Engines
Diesel Engines
Textile Machinery
Pumps
Turbine Engines etc.
Pneumatic Tools
Valves & Fittings
Watch Industries
Antiques (Reproduction)
Nuclear
Defense
Human Implants
SALIENT FEATURES
Thus, investment casting has got utility in various industries. The Investment Castings have got following salient features.
- Freedom in design alloy selection.
- Smooth surface finish and close dimensional tolerances.
- Eliminate/ Reduce machining operation.
- Suitable for batch as well as mass production.
- Letterings and numbering on Castings is possible.
- Zero leakage in all castings.
- Casting weight from 5 Gms. To 32 kgs. With minimum wall thickness 2.5mm possible
TOLERANCES
The accuracy obtainable in precision casting depends on a number of process tolerances the shrinkage of wax the refractory and casting material. Table given below shows the tolerances achievable for different dimensions.
*TIR-Total Indicator Reading
*TIR-Total Indicator Reading
| Range of Nominal Dimensions in mm | For Length, Width & Height in mm | For Centre Distance in mm |
For Roundness, Concentricity in mm | For Straight Flatness in mm |
| Over Upto | Functional +&- Non Functional +&- | Functional +&- Non Functional +&- | Functional TIR As Cast TIR | Functional TIR |
| 01 10 | 0.08 0.12 | 0.10 0.25 | 0.08 0.12 | 0.08 |
| 10 25 | 0.10 0.15 | 0.20 0.32 | 0.10 0.15 | 0.10 |
| 25 50 | 0.20 0.25 | 0.30 0.50 | 0.15 0.25 | 0.15 |
| 50 75 | 0.30 0.37 | 0.40 0.65 | 0.25 0.40 | 0.20 |
| 75 100 | 0.40 0.50 | 0.50 0.80 | 0.35 0.50 | 0.25 |
| 100 150 | 0.70 0.80 | 0.70 1.00 | 0.45 0.70 | 0.35 |
| 150 200 | 0.90 1.10 | 0.90 1.30 | 0.55 0.85 | 0.50 |
| 200 300 | 1.20 1.50 | 1.00 1.80 | 0.70 1.00 | 0.70 |
