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Hyper Steel Grinding Media Balls
(a) CHEMICAL COMPOSITION: The chemical composition of the grinding media will be as per IS 6079-1980: as follows:
| GRADE-1 (For size 60 mm & above) |
GRADE-2 (For size below 60 mm) |
|
| Carbon | 1.10-1.60 | 1.50-2.00 |
| Silicon | 1.00 Max. | 1.00 Max. |
| Manganese | 0.90-1.60 | 0.90-1.60 |
| Chromium | 1.20-2.40 | 1.20-2.40 |
| Sulphur | 0.06 Max. | 0.06 Max. |
| Phosphorous | 0.06 Max. | 0.06 Max. |
(b) HARDNESS: When tested in accordance with IS 1500/1983 the hardness at any point
across the section of the ball is more than 375 BHN.
(c) MICROSTRUCTURE: Microstructure shall be free from continuous carbide network.
(d) HEAT TREATMENT: The grinding media is suitably heat treated to obtain the required hardness and Microstructure.
(e) STANDARD SIZE OF GRINDING MEDIA:
Balls diameter (mm) - 125,100,90,80,75,70,65,60,50,40,30,25,20 & 17
Cylpebs (mm)-25x25, 22x22, 19x19
OTHER TECHNICAL SPECIFICATIONS WILL CONFIRM TO IS 6079-1980
(f) TOLERANCE ON SIZE: Variation on size shall not exceed the following limits:-
| SHAPE AND SIZE | TOLERANCE (mm) |
| (1) Balls for sizes 60 mm & above | +/- 3.00 |
| (2) Balls for sizes 50 mm & below | +/- 2.50 |
| (3)Cylpebs for all sizes | +/- 1.50 |
(a) CHEMICAL COMPOSITION: The chemical composition of the grinding media will be as per IS 6079-1989: as follows:
| GRADE-1 (For size 60 mm & above) |
GRADE-2 (For size below 60 mm) |
|
| Carbon | 1.25-1.50 | 1.60-1.90 |
| Silicon | 1.00 Max. | 1.00 Max. |
| Manganese | 1.20-1.50 | 1.20-1.50 |
| Chromium | 1.50-2.00 | 1.50-2.00 |
| Sulphur | 0.06 Max. | 0.06 Max. |
| Phosphorous | 0.06 Max. | 0.06 Max. |
(b) HARDNESS: When tested in accordance with IS 1500/1983 the hardness at any point across the section of the ball is more than 375 BHN.
| SHAPE AND SIZE | TOLERANCE (mm) |
| (1)Balls for sizes 60 mm & above | +/- 2.50 |
| (2) Balls for sizes 50 mm & below | +/- 2.00 |
| (3) Balls for sizes 25 mm to15mm & Cylpebs for all sizes | +/- 1.50 |