Characteristics of Precision Castings:
a. Fine surface luminosity; b. Accurate size tolerance; c. Easy figuration of complicated castings; d. No limitation to designation; e. Easy choice for materials; f. Less processing procedures; g. Lower producing cost; h. Flexible producing capacity.
Technological data of grinding balls:
a. Chemical Composition (%):
C Si Mn P S Cr Mo Cu
1.7-3.4 ≤1.0 ≤2.5 ≤0.1 ≤0.1 10-18 ≤1.0 ≤1.5
b. Mechanical Properties:
HRC≥55; Time of Falling Balls≥8000; Ak(j/cm2)≥2.3; Diameter Tolerance: Ф17-Ф50≤1.5mm, Ф60-Ф100≤2mm
c. Microstructure: M+C
d. Using Properties:Crash and Breakage: ≤1%; Wearing Capacity: 20-50g/tn(for cement).