Precimetal has established various technologies to manufacture investment casting parts in lost-wax process. They are :
1. Water-Sol Core
2. Quick Set Gel
3. Pre-formed Ceramic Core
Smallest casting manufactured: 10 grams.
Largest casting manufactured: 35,000 grams.
Available capacity for manufacturing largest casting: up to 50,000 grams.
Lowest wall thickness manufactured: up till 3.0mm.
Tolerance: ISO 8062, CT5 & IS 11166, Class – II.
Quantities: Small, Medium & large series (Domestic & Exports).
Machining facilities: Presently outsourced through our approved vendors..
The company manufactures all types of ferrous based castings conforming to various Indian as well as international standards. The most common are:
1. Stainless Steels & Corrosion Resistance Steels
Stainless Steel casting confirming to various standards like ASTM, IS, DIN, JIS e.g. CF8, CF3, CF8M, CF3M, CD4MCU, 17.4PH, CA6NM, CA 15, CA 40 etc.
2. Heat Resistance Steels
Heat Resistance Steel casting confirming to various standards like ASTM, IS, DIN, JIS e.g. grades HA, HH, HK, HT, etc.
3. Special & High Alloy Steels
Special Alloy casting confirming to various standards like ASTM, IS, DIN, JIS e.g. Alloy-20, Haste Alloy - A, Haste Alloy-B, Haste Alloy-C etc.
4. Plain & Low Alloy Steels
Plain & Low Alloy Steel casting confirming to various standards like ASTM, IS, DIN, JIS e.g. WCB, WCA, WCC, EN-8, EN-9, EN-19, EN-24, EN-55, etc.
5. low-temperature alloy steels
Alloy Steel casting confirming to various standards like ASTM, IS, DIN, JIS e.g. LCB, LCC, LC-6, CA 15, CA6NM, etc.
Dimension Tolerances:
Investment castings can be produced with a very close control dimension eliminating machining in some of the products. It’s to the buyer’s interest to develop the product with minimum machining allowance to enable him to take advantage of the process. General tolerances which can be achieved by this process are mentioned below. However if required still further tight tolerance, the same can be discussed with the manufacturer and then design the product accordingly.
Dimensions
The dimensions tolerances mentioned are as per Indian Standards 11166 Class II. All tolerances are in +/- tolerances.
Nominal dimension | Overall Dimensions | ||||||||
---|---|---|---|---|---|---|---|---|---|
Over | - | 6 | 10 | 18 | 30 | 80 | 180 | 300 | |
Over | Up-to | 6 | 10 | 18 | 30 | 80 | 180 | 300 | 500 |
- | 6 | 0.10 | 0.12 | 0.15 | 0.20 | 0.25 | 0.25 | 0.30 | 0.35 |
6 | 10 | _ | 0.12 | 0.15 | 0.25 | 0.25 | 0.30 | 0.35 | 0.45 |
10 | 18 | - | - | 0.20 | 0.30 | 0.35 | 0.35 | 0.40 | 0.55 |
18 | 30 | - | - | - | 0.30 | 0.40 | 0.45 | 0.50 | 0.65 |
30 | 80 | - | - | - | - | 0.45 | 0.55 | 0.60 | 0.75 |
80 | 180 | - | - | - | - | - | 0.60 | 0.70 | 0.90 |
180 | 300 | - | - | - | - | - | - | 1.00 | 1.15 |
300 | 500 | - | - | - | - | - | - | - | 2.00 |
Flatness
Casting length (mm) | 25 | 50 | 75 | 100 | 125 | 150 |
---|---|---|---|---|---|---|
As-cast tolerances (mm) | 0.20 | 0.37 | 0.50 | 0.63 | 0.76 | 0.76 |
Straightness
Casting length (mm) | 50 | 75 | 100 | 125 | 150 |
---|---|---|---|---|---|
As-cast tolerances (mm) | 0.50 | 0.75 | 0.75 | 1.00 | 1.50 |
Concentricity
Outside diameter (mm) | 18.75 | 25.00 | 37.50 | 50.00 |
---|---|---|---|---|
Inside diameter (mm) | 6.25 | 12.50 | 18.45 | 25.00 |
As-cast tolerances | 0.100 | 0.125 | 0.200 | 0.250 |
Angles
As a general rule, angular tolerances can be held to +/- ½ degree.
Surface Finish
Material | Average R.M.S. value |
---|---|
Carbon and low alloy steels | 90-125 |
Stainless Steels | 90-125 |
Moreover, letters, symbols, numbers, holes etc. also can be cast in ‘As-Cast’ conditions by this process.