Product Details:
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Place of Origin: | CHINA |
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Brand Name: | JN |
Certification: | SGS |
Model Number: | 20mm-180mm |
Payment & Shipping Terms:
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Minimum Order Quantity: | 500kg |
Price: | Negotiable |
Packaging Details: | Ploy bag+25kg carton box+1000kg wooden box |
Delivery Time: | 7-15 days |
Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram,Paypal |
Supply Ability: | 500TONS PER MONTH |
Detail Information |
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Dimensions: | 20-150mm | Material: | Steel,Iron,chrome |
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Application: | Mining,cement,Power Plant,Power Stations Etc. | Hardness: | 58-66HRC,60-65HRC |
Breakage Rate: | ≤1% | Microstructure: | M+C |
Diameter Tolerance: | -1mm,+2mm | Impact Value: | ≥12 J/c㎡ |
Process: | Open Die Forging,Casting | Hs Code: | 84749000,73259100 |
Type: | Moulding Press | Heat Treatment: | Quenchining & Tempering |
Warranty: | 1 Year | ||
Highlight: | grinding media steel balls,forged grinding balls |
Product Description
Forged Steel Ball And Casting Steel Balls Of Grinding Media ForBall Mill 20MM-180MM
We mainly produce
Forged Grinding Balls, Rolled Grinding Balls and
Cast Grinding Balls as follows:
1. 60Mn Forged Grinding Balls and Rolled Grinding Balls (20mm to 180mm)
2. B2 Forged Grinding Balls and Rolled Grinding Balls (20mm to 180mm)
3. B3 Forged Grinding Balls and Rolled Grinding Balls (20mm to 180mm)
4. B4 Forged Grinding Balls and Rolled Grinding Balls (20mm to 180mm)
5. High chrome cast grinding ball (12.7mm to 120mm)
6. Medium chrome cast grinding ball (12.7mm to 120mm)
7. Low chrome cast grinding ball (12.7mm to 120mm)
Feature of our grinding balls as follows:
1. High Hardness: Surface hardness: HRC60-68 HRC, volume hardness HRC60-65.
2. High Impact Toughness: The impact toughness of our grinding balls is more than 12 J / cm2.
3. Low Broken Rate: the actual broken rate is not higher than 1%.
4. Good wear-resistant and lower wear rate.
Applied fields of our grinding balls:
1. Mines;
2. Cement plants;
3. Power stations;
4. Chemical industry
Specifications of our grinding balls as follows:
PRODUCTS |
SURFACE HARDNESS |
CORE HARDNESS |
CHEMICAL COMPOSITION |
1) 60Mn Forged grinding ball | HRC58-65 | ≥HRC45 |
C: 0.52-0.65; Si: 0.15-0.37; Mn: 0.6-1.2; S & P: 0.04Max; Cr: 0.25Max |
2) B2 Forged grinding ball | HRC60-68 | ≥HRC55 |
C: 0.75-0.90; Si:0.17-0.37; Mn:0.7-0.9; P: 0.035 MAX; S: 0.035MAX; Cr:0.40-0.70. |
3) B3 Forged grinding ball | HRC60-68 | ≥HRC55 |
C:0.55-0.65; Si:0.2-0.37; Mn:0.75-0.9; Cr:0.85-1.2;S/P≤0.03; |
4) B4 Forged grinding ball | HRC60-68 | ≥HRC58 | C:0.58-0.66; Si:1.6-1.9; Mn:0.65-0.80; Cr:0.7-0.9; S/P≤0.03; |
5) High chrome cast grinding ball | HRC60-65 | ≥HRC58 |
Cr:11-27; C: 2.0-3.0; Si:1.0Max; Mn: 0.5-1.5; S & P:0.10Max; |
6) Low chrome cast grinding ball | HRC48-55 | ≥HRC46 |
Cr:1-3; C: 2.2-3.6; Si:1.0Max; Mn: 0.5-1.5; S & P:0.10Max; |
7) Medium chrome cast grinding ball | HRC55-63 | ≥HRC55 |
Cr:4-10; C: 2.2-3.6; Si:1.0Max; Mn: 0.5-1.5; S & P:0.10Max; |
Diameter, Diametrical tolerance, Weight, Impact toughness of our grinding balls
Nominal diameter (mm) |
Diametrical tolerance (mm) |
Weight of Single of grinding ball in average |
Number of piece of One ton grinding ball in average |
Impact toughness |
DIA 20MM DIA 25 MM DIA 30 MM DIA 40 MM DIA 50 MM |
+2 -1 |
32 64 110 263 513 |
31250 15625 9090 3802 1949 |
≥12 |
DIA 60 MM DIA 70 MM DIA 80 MM DIA 90 MM DIA 100 MM |
+3 -2 |
888 1410 2104 2996 4110
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1126 709 475 333 243 |
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DIA 110 MM DIA 120MM DIA 130 MM |
+4 -2 |
5457 7102 9030 |
182 140 110 |
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DIA 140 MM DIA 150 MM |
+4 -3 |
11278 13871 |
88 72 |
Package: Steel drums (850kg per drum) or Flexible Container Bags ( 1000kg per bag)
Production process
Raw Material:
The quality of grinding ball almost depends on the raw material the manufacturer used.
Our products use high-quality round steel from national large-scale steel companies
to ensure the quality of our products.
Advanced Equipments:
All the balls are then forged into balls after heated by the intermediate frequency furnace.
Heat Treatment:
Firstly with 760 ℃ to go through austempering and then get the balls tempered at 200℃.
Mill Use
According to one of use reports of Φ9.75×4.88m SAG mill in copper mine,
on the basis of completely meeting production conditions and technical requirements,
our grinding ball consumption is about 0.38kg / t , so it saved 1416.00 tons grinding balls a year
which can finally save at least 10% purchase cost in grinding balls.
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