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          Low  chrome cast grinding ball

          Low  chrome cast grinding ball

          Card no.
          Chemical analysis
          C
          Si
          Mn
          Cr
          P
          S
          Mo
          AI
          ZQCr
          2.0-3.5
          ≤1.2
          ≤1.0
          0.5-1.5
          ≤0.15
          ≤0.20
          trace
          trace
          Cu
          Ni
          Nb
          Ti
          Zr
          V
          B
          Mg
          trace
          trace
          trace
          trace
          trace
          trace
          trace
          trace

           

          Mechanical properties and microstructure 



          Low  chrome cast grinding ball



          Card no.
          HRC 
          (HRC)
          impact value 
          Ak(J/cm2)
          The microstructure
          Falling ball impact fatigue life
          ZQCr
          ≥45
          ≥1.6
          P+C
          >5000

          High chrome cast grinding ball

          牌號Grade
           chemical composition(%)
          C
          Si
          Mn
          Cr
          P
          S
          Mo
          Cu
          Ni
          ZQCr10
          2.0-3.2
          0.3-1.2
          0.2-1.0
          10-13
          ≤0.10
          ≤0.10
          0-2.0
          0-1.0
          0-1.5
          ZQCr17
          2.0-3.0
          0.3-1.2
          0.2-1.0
          15-18
          ≤0.10
          ≤0.10
          0-2.0
          0-1.0
          0-1.5
          ZQCr20
          2.0-2.8
          0.3-1.0
          0.2-1.0
          18-22
          ≤0.10
          ≤0.08
          0-2.5
          0-1.0
          0-1.5
          ZQCr26
          2.0-2.8
          0.3-1.0
          0.2-1.0
          22-28
          ≤0.10
          ≤0.08
          0-2.5
          0-2.0
          0-1.5
          硬度(HRC)
          沖擊值ak(J/cm2)
          落球沖擊值疲勞壽命(次數)Times of falling Balls
          金相組織 Microstructure
          56-63
          ≥3.0
          ≥15000
          M+C
          M-馬氏體 Martensite  C-碳化物 Carbide
          產品規格(mm)Specification
          φ8
          φ10
          φ12
          φ15
          φ17
          φ20
          φ25
          φ30
          φ40
          φ50
          φ60
          φ70
          φ80
          φ90

          φ100

          φ110
          φ120
          φ130


          chromium in paragraph

          chemical composition(%)
          C
          Si
          Mn
          Cr
          P
          S
          Mo
          Cu
          Ni
          1.7-3.2
          0.3-1.2
          0.2-1.0
          10-13
          ≤0.10
          ≤0.10
          0-3.0
          0-1.0
          0-1.5
          硬度(HRC)
          金相組織 Microstructure
          M-馬氏體 Martensite  C-碳化物 Carbide
          產品規格(mm)Specification
          φ8×10
          φ10×12
          φ12×14
          φ14×16
          φ16×18
          φ18×20
          φ20×20
          φ20×25
          φ25×30
          φ30×35
          φ35×40
          φ40×45

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