| Hyper /High Crome Steel Media Balls |
| Hyper steel Grinding Media Balls and Cylpebs as Per IS 6079-1989: |
(a) CHEMICAL COMPOSITION: The Chemical Composition of the grinding Media Will Be as Per IS 6079-1980:follows: |
| |
GRADE_1
(For Size below 60 mm) |
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. |
| Phospherous |
0.06 Max |
0.06 Max |
(i) 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.
(ii) MICROSTRUCTURE : Microstructure Shall be free form Continuous Carbide network .
(iii) HEAD TREATMENT : The Grinding Media is Suitably Heat Treated to Obtain the Required Hardness and Microstructure .
(iv) STANDARD SIZE OF GRINDING MEDIA :Balls Diameter (mm) -100,90,80,75,70,65,60,50,40,30,25,&20
Cylpebs (mm)- 25x25, 22x22, 19x19
(v)TOLERANCE ON SIZE : VARIATION On Size: Shall Not Exceed the Following Limits:-
| SHAP AND SIZE |
TOLERANCE (MM) |
| (1) Ball For Size 60 mm & Abobe |
+/- 2.50 |
| (2)Ball For Size 30 to 50 mm & Below |
+/- 2.00 |
| (2)Ball For Size 15 to 25 mm & Below |
+/- 1.50 |
| (3)Cylpebs for all sizes |
+/- 1.50 |
 |
