Hyderabad Karnataka Minerals & Chemicals was established in2007 as a small scale unit to manufacture resin coated sand for the foundry industry. This quality conscious and enterprising unit is a proprietorship from owned by:
Mr. Md. Mazhar. S. Choudri. B.E(Mech)
Laboratory Facilities
Well equipped lab to check all critical properties of in coming raw material & finished products via sieve shaker, Hot and cold tensile strength Testing M/c, Transverse strength, core gas determinater, peel back, Build up Stick point tester.
Grades
Resin Coated Sand
This is a range of a Resin Coated Send used in production of cores & moulds by shell process with superb hot strength. It is prepared form high grade Quartz sand, Silica sand, Ceramic sand, Chromite, Zircon sand by procoating it with phenol – formaldehyde (PF) resin and catalyst. This resin - coated sand is very smooth, free flowing and dry with good resistance to moisture.
Grades for non-ferrous casting
Our product line for various non ferrous casting such as cylinder head, cylinder block, water jacket manifold and hollow pipes with good surface finish and excellent collapsibility.
| Code | Product | Specifications | Characteristics |
|
|
| H.T.S |
|
|
| HK11 | HKNF – A | 10-12 kg/cm2 | AFS | : 55-80 |
| HK12 | HKNF – B | 12-14 kg/cm2 | GAS | : 8-14 cc/gm |
| HK13 | HKNF – C | 16-20 kg/cm2 | STICK POINT | : 92-94 deg C |
|
|
|
| L.O.I | : 1.8-2.7 % |
Grades for cast iron/S.G.Iron/Alloy/Cast Iron
Our product line for this grade is suitable for casting such as camshaft, crankshaft, turbine housing casting, valve guide………
| Code | Product | Specifications | Characteristics |
|
|
| H.T.S |
|
|
| HK14 | HKNF – A | 24-28 kg/cm2 | AFS | : 52-70 |
| HK15 | HKNF – B | 30-35 kg/cm2 | GAS | : 16-24 cc/gm |
| HK16 | HKNF – C | 36-38 kg/cm2 | STICK POINT | : 98-100 deg C |
| HK17 | HKNF – D | 40-44 kg/cm2 | L.O.I | : 3.5-4.5 % |
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|
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| CTS can be 15-30% Higher than HTS (If desired) |
Grades for Steel Casting
This grade is suitable for alloy steel castings; sand has very low nitrogen content cores and moulds will with stand high thermal shock resistance.
| Code | Product | Specifications | Characteristics |
|
|
| H.T.S |
|
|
| HK18 | HKNF – A | 22-25 kg/cm2 | AFS | : 52-67 |
| HK19 | HKNF – B | 28-30 kg/cm2 | GAS | : 14-18 cc/gm |
| HK20 | HKNF – C | 32-35 kg/cm2 | STICK POINT | : 100-101 deg C |
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|
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| L.O.I | : 4-5 % |
Note : We can also manufacture the sand as per customers specifications.
Highlights of Resin Coated Sand
- Silica Content in our Quartz is 99.2% and above.
- We can give Resin coated sand from 40AFS to 120AFS
- We can give 80 to 85% of RCS in 3 sieves distribution for better surface
- finish & improved collapsibility.
- Sand has very good flowability
- There is through curing of cores
- During pouring it will withstand thermal shock and the moulds will not crack during pouring
- The ejection of the moulds is smooth & there are no Sub surface cracks in the mould
- Low gas & low Nitrogen content
- Good collapsibility for aluminum casting
We are committed to:
- Manufacture and supply products that meet the requirements of our customers.
- Maintain consistency in quality to ensure the continuing satisfaction of our customers.
- Make consistent improvements in our products for technical up-gradation and reduction of costs.
- Continuously improve the effectiveness of our Quality Management system.
- To develop at least one new application or one new product to meet customer demand.
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