Alloy Casting Grinding Ball

Alloy casting grinding ball Alloy casting grinding ball is higher hardness,lower wear rate,good toughness and less are widely used in mining, power plant, cement and magnetic materials industries. In the using process, the surface hardness getting higher and the wear resistant getting strengthen, at the same time, the production capacity of ball mill getting improved. Alloyed chrome cast grinding ball Chemical Composition Name Designation Chemical Composition(%) C Si Mn Cr P S Alloyed chrome cast grinding ball ZQCr26 2.0~3.3 ≤1.2 0.3~1.5 >23~30 ≤0.10 ≤0.06 ZQCr20 2.0~3.3 ≤1.2 0.3~1.5 >18~23 ≤0.10 ≤0.06 ZQCr15 2.0~3.3 ≤1.2 0.5~1.5 >14~18 ≤0.10 ≤0.06 ZQCr12 2.0~3.3 ≤1.2 0.5~1.5 >10~14 ≤0.10 ≤0.06 ZQCr8 2.1~3.3 <2.2 0.3~1.5 7~10 ≤0.10 ≤0.06 ZQCr5 2.1~3.3 <1.5 0.3~1.5 4~6 ≤0.10 ≤0.10 ZQCr2 2.1~3.6 <1.5 0.3~1.5 1~3 ≤0.10 ≤0.10 Physical Property Name Designation Surface Hardness Core Hardness Microstructure Times of Falling Balls (HRC) (HRC) Alloyed chrome cast grinding ball ZQCr26 >58 >56 M+C ≥15000 ZQCr20 >58 >56 M+C ≥15000 ZQCr15 >58 >56 M+C ≥15000 ZQCr12 >58 >56 M+C ≥15000 ZQCr8 >50 >47 P+C ≥10000 ZQCr5 >48 >45 P+C ≥10000 ZQCr2 >46 >45 P+C ≥10000 M-Martensite P-Pearlite C-Carbide Tolerance of Diameter Diameter Φ10-Φ25 25<Φ<60 60<Φ≤100 100<Φ Tolerance of Diameter +1.0 +1.5 +2.0 +3.0 -1.0 -1.0 -1.0 -1.0