Grinding Media Balls
We manufacture steel grinding media in various alloy steel compositions, shapes and sizes for diverse grinding and milling applications. This grinding media for ball mills, pulverizers and attritors is cold forged and ground. The hardened steel balls (shots, beads) are available in different hardness, as required, in both high carbon steel and chrome alloy steel. Precise heat treatment insures their resistance to flaking, chipping or spelling.
Hardened steel forged grinding media is very suitable wherever high wear and chemical resistance is required. And also where generation of heat is crucial to the milling and dispersion process. The steel shots, balls and beads - ball mill media - are preferred for contamination free and speedy (dry / wet) milling, grinding of solids, liquids dispersion and fine particle size reduction, homogenization of fillers and raw materials, attrition and pulverizing applications in ball, vibro, dyno, pearl, bead, pebble, attritor and small-media mills, vertical or horizontal.
Alloy steel media is particularly suitable because of its high relative density and hardness, for crushing and mixing heavy & hard materials. And also where high pressure and impact grinding or crushing methods are employed. The forged steel media balls also find advantage in reducing particle size and fine dispersion of highly viscous fluids.
Our grinding media are manufactured in carbon steel and chrome alloy steel. Normally, carbon steel balls are used for common low speed grain grinding such as metal or chemical powders. For high speed ball mill grinding process such as paints, inks or resin powders, chrome alloy steel balls are usually used for extended durability.
Since grinding media are always consumed in a great volume, cost and durability become the most important characteristics sought. We have been concentrating on developing cheap but durable grinding media for many years and are now able to provide the most cost saving and most durable grinding media in the market. We supply our grinding media in various finishes and shapes to save every penny. Our special heading and heat treating processes guarantee a much better durability. We will be pleased to develop custom made grinding media for any special grinding process.
Advantages
- Steel grinding media finds advantage where:
- High wear and chemical resistance is required.
- Generation of heat is crucial to the milling and dispersion process.
- Contamination free and speedy (dry / wet) milling is important.
- Crushing and mixing heavy and hard materials is undertaken.
- High pressure and impact grinding or crushing methods are employed.
- Reducing particle size and fine dispersion of highly viscous fluids is required.
HYPER / HIGH CROME STEEL MEDIA BALLS
Hyper steel Grinding Media Balls and Cylpebs as per IS 6079-1989
CHEMICAL COMPOSITION: The chemical composition of the grinding media will be as per IS 6079-1989: as follows:
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GRADE-1 (For size 60 mm & above)
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GRADE-2 (For size below 60 mm)
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Carbon
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1.25-1.50
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1.60-1.90
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Silicon
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1.00 Max.
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1.00 Max.
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Manganese
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1.20-1.50
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1.20 -1.50
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Chromium
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1.50-2.00
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1.50-2.00
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Sulphur
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0.06 Max.
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0.06 Max.
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Phospherous
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0.06 Max.
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0.06 Max.
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Hardness: tested in accordance with IS 1500/1983 the hardness at any point across the section of the ball is more than 375 BHN
MICROSTRUCTURE: Microstructure shall be free from continuous carbide network.
HEAT TREATMENT: The grinding media is suitably heat treated to obtain the required hardness and Microstructure.
STANDARD SIZE OF GRINDING MEDIA:Balls diameter (mm) 125,100,90,80,75,70,65,60,50,40,30,25, & 20 Cylpebs (mm)-25x25, 22x22, 19x19
TOLERANCE ON SIZE: Variation on size shall not exceed the following limits
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SHAPE AND SIZE
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TOLERANCE (mm)
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Balls for sizes 60 mm & above
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+/- 2.50
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Balls for sizes 30 to 50 mm & below
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+/- 2.00
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Balls for sizes 15 to 25 mm & below
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+/- 1.50
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Cylpebs for all sizes
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+/- 1.50
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COMPOSITION:The chemical composition of the forged steel grinding media will be as per IS 12658:1989 as follows
High chrome steel Grinding Media Balls and Cylpebs
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Working conditions
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Low abrasion medium impacts
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Low abrasion high impact
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High abrasion high impact
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High abrasion low impact
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High abrasion low impact
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High abrasion low impact
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Application
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First Chamber cement & raw mill
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First Chamber cement& raw mill
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First Chamber cement& raw mill
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Second Chamber of cement raw mill and Coal mill
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Second Chamber of cement raw mill and Coal mill
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Second Chamber of cement raw mill and Coal mill
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Hardness(HRC)
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58-62
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60-64
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61-65
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59-64
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60-65
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60-65
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Cr %
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14-18
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14-18
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18-22
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10-14
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11-15
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16-20
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C %
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2.0-3.0
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2.0-3.0
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2.5-3.5
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2.5-3.5
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2.0-3.0
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2-3
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Wear Resistant
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Good
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Good
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Excellent
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Excellent
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Excellent
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Excellent
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Impact resistance
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Good
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Excellent
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Excellent
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Low
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Low
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Low
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