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COMPANY ENVIOMENT
PRODUCTS INTRODUCTION
Manganese steel grinding ball II with high hardness and corrosion resistance specialty. Mainly used in wet ball mill in mines and quartz sand factories.Has been exported to Pure, Mexico, Spain, India, Australia and South Africa. The specific performance as follow:
Chemical Composition | C(%) | Si(%) | Mn(%) | Cr(%) | Cu(%) | Mo(%) | P(%) | S(%) | |
0.57-0.65 | 0.17-0.37 | 0.7-1.0 | ≤0.25 | ≤0.25 | ≤0.3 | ≤0.035 | ≤0.035 | ||
Size | 20-150mm(0.8inch-6inch) | ||||||||
Hardness | Serious | Hardness | |||||||
Standard Hardness | 53-58HRC | ||||||||
High Hardness | 55-60HRC | ||||||||
Impact Value | ≥15J/CM^2 | ||||||||
Balls Number | ≥15000times | ||||||||
Microstructure | M+C(C-Carbide M-Martensite ) |
Diameter Tolerance(mm) | 20-25mm | 30-60mm | 70-90mm | 100-140mm | 150mm | ||
±1 | ±1.5 | +2,-2 | +2.5,-2 | +3,-2 | |||
Roundness tolerance(%) | ≤1% | ≤1% | ≤1.5% | ≤2% | ≤2% | ||
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Forged Steel Ball Production Process | 1)Fully automatic production line of hot rolling steel ball Raw material testing→Material on storage rack→automatic continued feeding device→furnace heating→enter into rolling ball machine→automatic isothermal transfer→quenching system→steel ball heating preservation device→finished steel ball testing→package→transport to warehouse 2)Automatic production line of hot forging steel ball Raw material testing→Material on storage rack→furnace heating→hot cutting→preforging→enter into rolling ball machine →automatic isothermal system transport→quenching system→steel ball heating preservation device→finished steel ball testing→package→transport towarehouse 3)Traditional production line of forged steel ball Raw material testing→Cutting raw material→furnace heating→forging→automatic isothermal system→quenching system→steel ball heating preservation device→finished steel ball testing→package→transport to warehouse |
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