Chrome Grinding Steel Ball
Grinding steel ball is used to in mining,cement plant,power station,chemicial industrial and other many industry areas.
A good surface grinding steel ball should not have crack,gas porosity,shrinking cavity,cold shut,etc.If producing these problems,it does not only relate with production technology,but also related with the producing equipments.
Ningguo Zhicheng does not only offer excellent grinding ball making machines,but also production technology in producing cast grinding balls.Now we mainly introduce the grinding balls from our customers who are using our grinding ball machines to produce grinding steel balls.
PRODUCTS:
1. High,Middle And Low Grinding Steel Balls
2. Specification
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DIa 8 mm
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Dia10 mm
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Dia 12.5mm
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Dia 15mm
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Dia 20mm
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Dia 25mm
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|
Dia 30mm
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Dia 40mm
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Dia 50mm
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Dia 60mm
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Dia 70mm
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Dia 80mm
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Dia 90mm
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Dia 100mm
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Dia 110mm
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Dia 120mm
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Dia 125mm
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Dia 130mm
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Customized according to customer requirements
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3.Mechanical Property And Metallographic Structure
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Product
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Hardness(HRC)
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AK(J/cm²)
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Metallographic Structure
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The times of falling balls
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Low Cr Ball
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≥45
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≥2.0
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P+C
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8000
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Middle Cr Ball
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≥48
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≥2.0
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P+C
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9000
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High Cr Ball
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≥58
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≥2.5
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M+C
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18000
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Super Hi Cr Ball
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≥60
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≥3.0
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M +C
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20000
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C-Carbide M-Martensite P-Pearlite
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4. Chemical Composition
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Chemical Composition
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Product
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C
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Si
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Mn
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Cr
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P
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S
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Low Cr Ball
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2.2-3.5
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≤1.2
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≤1.0
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0.8-2.2
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≤0.10
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≤0.10
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Middle Cr Ball
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2.0-3.3
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≤1.2
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≤1.0
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4.9-9.0
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≤0.10
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≤0.10
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High Cr Ball
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2.0-3.2
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≤1.0
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≤1.0
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10-12
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≤0.10
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≤0.06
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Super Hi Cr Ball
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2.0-3.2
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≤1.0
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≤1.0
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18-28
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≤0.10
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≤0.06
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Production Equipent：
1. Automatic grinding ball molding line
2.Grinding ball mold
3. Heat treatment furnace
Test Equipment:
1. Direct reading spectrometer
2. Cutting machines for metallographic structure
3. Metallographic Microscope
4. Hardness tester
5. Impact tester
6. Quality inspection
PACKAGE
1. one ton bag(1000kg)
2. Iron drum（850-920kg per drum）
