High Chromium Ball

Ball mill

Diameter	Common difference
DIA17MM	+1，-1
DIA20MM	+1，-1
DIA25MM	+1，-1
DIA30MM	+1，-1
DIA40MM	+2，-1
DIA50MM	+2，-1
DIA60MM	+2，-2
DIA70MM	+2，-2
DIA80MM	+3，-2
DIA90MM	+3，-2
DIA100MM	+3，-2

>> Chemical Composition >>

Name	Designation	C	Si	Mn	Cr	S	P	Mo
High-Cr-ball	ZQCr20	2.0~3.2	≤1.0	≤1.5	19~22	≤0.08	≤0.06	≤1.0
	ZQCr17	2.0~3.2	≤1.0	≤1.5	15~18	≤0.08	≤0.06	≤1.0
	ZQCr11	2.0~3.2	≤1.0	≤1.5	10~13	≤0.08	≤0.06	≤1.0
Low-Cr-ball	ZQCr2	2.1~3.5	≤1.0	≤1.5	1.5~3.5	≤0.08	≤0.08	≤1.0

>> Properties and Microstructure >>

Name	Designation	Hardness(HRc)		ak(j/cm2)	microstructure	Times of Falling Balls	Wear Rate (g/t cement)	Breakage
		Heat treatment	cast
High-Cr-ball	ZQCr20	55~65	≥50	≥4.0	M+C	≥8000	≤25	≤0.5
	ZQCr17	55~65	≥50	≥4.0
	ZQCr11	55~65	≥50	≥4.0			≤30
Low-Cr-ball	ZQCr2		≥45	≥2.5	P+C	≥5000		≤1.0

>> back >>

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