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HRC 45-48 Medium chrome cast steel Grinding Balls

Capacity : 4000t/month

Raw materials : steel

Application : Mining

Overview

Process features of HRC 45-48 Medium chrome cast steel Grinding Balls:
Moulding process—pouing when the molten iron temoerature reaches 1500 C,using the teoperature difference between moletn iron and the molds.in this way,the ball can achieve internal organization of grain refinement and be moredense.menanwhile,the carvide is radially arranged .and such carbide is embedded in the matrix again during grinding process,forming hatd layer continously,so that the hardness and toughness is maintained to a reasonable range,greatly improving the toughness and hardness of the grinding balls.

Parameters

  Name

 

Material Impact test

AK.j/cm^2

Endurance test times HRC Breakage
 

 

 

 

Cast ball

 

 

special hi-cr ≥4 ≥10000 58-64 <1%
higt-cr ≥3 ≥10000 58-62 <1%
medium-cr ≥3 ≥8000 45-48 <1%
low-cr ≥2 ≥8000 42-46 <1%

 

Ball Diameter(mm)
Φ10 Φ12.7 Φ15 Φ17 Φ20 Φ25 Φ30 Φ40 Φ50
Φ60 Φ70 Φ80 Φ90 Φ100 Φ110 Φ120 Φ125 Φ130
Chemical Composition
Designation C Si Mn Cr Mo Cu Ni Nb
Multi-ball 1 1.8-3.2 0.3-1.2 0.2-1.0 3.2-7 ≤0.5 ≤0.8 ≤0.5 ≤0.2
Multi-ball 2 1.8-3.2 0.3-1.2 0.2-1.0 7~10 ≤0.5 ≤0.8 ≤0.5 ≤0.2
  Ti Zr V B P S    
Multi-ball 1 ≤0.5 ≤0.5 ≤0.5 ≤0.1 ≤0.15 ≤0.1    
Multi-ball 2 ≤0.5 ≤0.5 ≤0.5 ≤0.1 ≤0.15 ≤0.1  

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