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| Customization: | Available |
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| Material: | B2 |
| Content: | >90% |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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JUNDA B2 forged steel grinding balls are designed for mineral processing mills where consistent hardness, wear resistance and grinding stability are important. Manufactured through controlled forging and heat treatment, the balls provide a dense internal structure and controlled surface and core hardness for continuous grinding applications.
Available in a range of diameters according to production specifications, B2 grinding balls can be selected according to mill size, feed size, ore abrasiveness, target product size, and operating conditions.
Why Choose B2 Forged Steel Grinding Balls?
B2 is a commonly used alloy steel grade for forged grinding media in mineral processing applications. It is designed to provide a balance between hardness, wear resistance and toughness rather than maximizing hardness alone.
Suitable for continuous abrasive grinding conditions.
Helps the grinding balls withstand repeated impact during mill operation.
Hardness can be adjusted through controlled heat treatment according to ball size and customer specifications.
B2 grinding balls can be used in various mineral processing mills where forged steel grinding media are required.
Why Is Uniform Hardness Important in Grinding Balls?
Grinding balls are repeatedly subjected to impact, abrasion and compression inside a mill. If hardness varies significantly between the surface and core, the ball may wear unevenly or lose grinding performance as the surface wears.
JUNDA B2 forged grinding balls are heat-treated to achieve a controlled and consistent hardness profile from the surface toward the core, helping maintain stable mechanical properties throughout the ball.
Uniform hardness helps reduce excessive differences in wear behavior between grinding balls.
More consistent grinding media properties help maintain a stable grinding charge.
A controlled hardness profile helps balance wear resistance with toughness.
Consistent material properties can help maintain grinding performance throughout the service life of the media.
Applications in Mineral Processing Mills
B2 forged grinding balls can be used for size reduction of various ores in mineral processing ball mills.
Different grinding ball sizes can be selected according to feed size and the grinding stage.
Grinding media support the size reduction required before downstream classification, flotation, gravity separation or other beneficiation processes.
B2 grinding balls can be considered for abrasive ore grinding where wear resistance and mechanical stability are required.
How to Select B2 Grinding Balls for Mineral Processing Mills?
| Selection Factor | Why It Matters |
|---|---|
| Mill Diameter | Influences ball impact energy |
| Feed Size | Coarser feed generally requires larger media |
| Ore Hardness | Affects grinding resistance and energy consumption |
| Ore Abrasiveness | Influences grinding media wear |
| Target Product Size | Finer products may require smaller media |
| Mill Speed | Affects ball movement and impact conditions |
| Ball Charge | Influences grinding media interactions |
| Existing Ball Size Distribution | Important for maintaining grinding performance |
| There is no single grinding ball size suitable for every mineral processing mill. The optimum size should be selected according to actual mill and ore conditions. | |
Grinding Ball Size Selection Guide
| Ball Size | Typical Grinding Stage | General Selection Consideration |
| 20-30 mm | Fine Grinding | Finer feed and smaller target product size |
| 30-50 mm | Secondary Grinding | Intermediate feed size and balanced grinding action |
| 50-80 mm | Primary / Secondary Grinding | Moderate to coarse feed |
| 80-100 mm | Primary Grinding | Coarser feed and higher impact requirement |
| 100-150 mm | Large-Diameter Grinding | Primary Grinding / Large-Diameter Mills | Coarse feed and high impact conditions |
| Note: The table provides general guidance only. Actual ball size selection depends on mill diameter, feed size, ore hardness, mill speed, ball charge and target product size. | ||
B2 Forged Grinding Ball Specifications
| Diameter | Surface Hardness | Core / Volume Hardness |
| 20-50 mm | 62-66 HRC | 60-64 HRC |
| 60-90 mm | 58-64 HRC | 50-60 HRC |
| 100-125 mm | 56-61 HRC | 45-55 HRC |
| 130-150 mm | 55-60 HRC | 40-50 HRC |
| JUNDA controls the hardness distribution of forged grinding balls through controlled heat treatment. Surface and core hardness are inspected according to ball diameter and the agreed technical specification. | ||
| Element | Carbon (C) | Chromium (Cr) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
|---|---|---|---|---|---|---|
| Typical Range | 0.72-0.86% | 0.40-0.60% | 0.15-0.35% | 0.30-1.20% | ≤0.035% | ≤0.035% |
JUNDA checks grinding ball hardness at specified locations to verify the consistency of surface and core mechanical properties. Hardness inspection can be performed according to the agreed technical specification.
Steel chemistry and material quality are checked before production.
The steel is heated under controlled temperature conditions before forging.
The heated steel is forged into spherical grinding media to develop a dense internal structure.
Controlled quenching develops the required hardness and strength.
Tempering helps balance hardness and toughness.
Surface and core hardness are inspected according to the specified requirements.
Ball diameter and dimensional tolerance are checked before shipment.
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