grinding media--casting ball high hardness low breakage good wear resistance cast tech

Low Chrome Alloyed Cast Grinding Balls	Designation	Chemical Composition(%)
		C	Si	Mn	Cr	Mo	P	S
	ZQCr2	2.0-3.3	≤1.2	≤1.5	1.0-3.0	≤1.0	≤0.15	≤0.15
Properties and Microstructure
Name	Hardness(HRC)	AK(j/cm²)	Microstructure	Times o Falling Balls
Polybasic	48-56	≥2.0	P+C	80	≥13000
				≥80	≥16000
Polybasic	50-56	≥3.0	M+C	80	≥15000
				≥80	≥8000
Specification
Ball Diameter	Weight of Each Ball	Pcs/ton
20	0.0322	31056
25	0.063	15873
30	0.11	9091
40	0.257	3891
50	0.5	2000
60	0.867	1153
70	1.37	729
80	2.05	487
90	2.9	345
100	4	250
110	5.3	188
120	6.8	147
125	7.75	129
130	8.74	114
Name	Designation	Chemical Composition(%)
		C	Si	Mn	Cr	Mo	P	S
Higher Chrome Cast Grinding Balls	ZQCr26	2.0-2.8	≤1.0	≤1.5	22-28	≤1.0	≤0.10	≤0.08
	ZQCr20	2.0-2.8	≤1.0	≤1.5	18-22	≤1.5	≤0.10	≤0.08
High Chrome Cast Grinding Balls	ZQCr17	2.0-3.0	≤1.0	≤1.5	15-18	≤1.5	≤0.10	≤0.08
	ZQC12	1.7-3.0	≤1.0	≤1.5	10--14	≤1.5	≤0.10	≤0.08
Name	Designation	Hardness(HRC)		AK(j/cm²)	Microstructure	Times of Falling Balls
Higher Chrome Cast Grinding Balls	ZQCr26	≥56	≥45	≥4.0	M+C	≥8000
	ZQCr20	≥56	≥45	≥4.0		≥8000
	ZQCr17	≥56	≥45	≥4.0		≥8000
High Chrome Cast Grinding Balls	ZQC12	≥56	≥45	≥4.0		≥8000
Specification
8	10	12	15	17	20	25	30
40	50	60	70	80	90	100	110

grinding media--casting ball