Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
Hot rolling steel cylpebs
- High Hardness & Low Abrasion Performance
- 50,000+ Tons Annual Grinding Media Capacity
- ISO 9001 Certified Strict Quality Control
- Custom Grinding Media Solutions Worldwide
- Advanced CNC Forging & Heat Treatment Technology
PRODUCT DESCRIPTION
Size and Tolerance
| Size (mm) | 20×30 | 25×35 | 30×40 | 35×45 | 40×50 | 45×55 | 50×60 | 55×65 | 60×70 |
| Diameter tolerance(mm) | ±1 | ||||||||
| Length tolerance(mm) | ±2 | ||||||||
Chemical composition
| Brand | C（%） | Si（%） | Mn（%） | Cr（%） | Cu（%） | Mo（%） | P（%） | S（%） | Ni(%) |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.80 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 65Mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| B-2 | 0.70-0.80 | 0.17-0.37 | 0.70-0.80 | 0.50-0.60 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
Technical specification
| Brand | Breakage rate | Hardness(HRC) | Impact value(J/cm2 ） | Drop times(times) | Micro structure |
| 45# | <1% | ≥45 | ≥12 | ≥8000 | M+C |
| 60Mn | <1% | ≥55 | ≥12 | ≥12000 | M+C |
| 65Mn | <1% | ≥58 | ≥12 | ≥12000 | M+C |
| B-2 | <1% | ≥60 | ≥12 | ≥15000 | M+C |
Core Product Features of Forged Steel Balls
- Ultra-low breakage rate: ≤0.5% for 25mm-80mm forged grinding balls, ≤1% for 90mm-140mm specifications—far lower than industry average, reducing grinding media consumption and replacement costs;
- High & gradient-distributed hardness: Surface hardness reaches HRC57-67, volume hardness HRC56-64, with high and uniformly distributed overall hardness for consistent and efficient grinding performance;
- Superior dimensional stability: No roundness loss, no deformation during long-term use, with excellent abrasion resistance to maintain grinding efficiency;
- Strong corrosion resistance: Excellent acid and alkali resistance, specially designed for wet ball mills in various mines, adapting to corrosive grinding working conditions of metallurgical and chemical industries.
Applied Fields
Our forged steel balls are widely used in ball mill equipment across a variety of industrial sectors, including large metallurgical mines (gold, copper, iron, aluminum, nonferrous metals, rare metals, etc.), cement building materials, coal slurry power plants, chemical plants, ceramic coatings, quartz sand and silica sand plants. As versatile industrial grinding media, they are the ideal grinding solution for both dry and wet ball mills in mining and industrial production.
Professional Production Process Lines
We offer two mature, high-precision production processes for forged steel balls, ensuring flexible production capacity and consistent product quality for all specifications (20-150mm):
Rotary Cut Steel Ball Production Process
Raw Material Inspection → Intermediate Frequency Furnace Heating → Spinning into Balls → Quenching Treatment → Tempering Treatment → Finished Product Inspection → Packaging
Forging Steel Ball Production Process
Raw Material Inspection → Feeding → Intermediate Frequency Furnace Heating → Forging (Roll Forging) into Balls
Chemical Composition
We strictly control the chemical composition of all our forged steel balls (20-150mm), with strict limits on harmful elements to ensure stable performance and wear resistance:
