Grinding Cylpebs

Mill Grinding Cylpebs for Ball Mill

Grinding Cylpebs Different from steel balls, the rotation flexibility of the Grinding Cylpebs during the grinding process is between the spherical shape and the rod shape, mainly relying on line contact to crush minerals. When the steel section is used as the medium grinding, the products of each particle size are relatively uniform, and the grinding of the intermediate product has a certain selectivity, and a certain protective effect on the minerals, giving full play to the advantages of the rod mill, but the crushing force is not as good as the spherical one. ; Steel ball grinding is ground through point contact with the material, suitable for fine grinding, the effect is good, but it does not have a protective effect on the material, it is easy to cause over-grinding, and the yield of each particle size of steel ball grinding does not change The steel section is uniform. Therefore, to ensure the grinding fineness and make the particle size distribution even, many mines will use the mixed addition method of adding steel balls and steel segments at the same time when adding grinding media to obtain a good grinding effect.

1. Diameter tolerance and length tolerance

 

Diameter(mm)	8×10	10×12	12×14	14×16	16×18	18×20	20×25
	25×30	30×35	35×40	40×45	45×50	50×55	55×60
Tolerance of diameter(mm)	+1,-1
Tolerance of length(mm)	+2,-2

Grinding Cylpebs

2. Chemical composition

Name	Brand	Chemical composition(%)
		C	Si	Mn	Cr	Mo	Cu	Ni	P	S
Chrome alloy casting steel cylpebs	ZQCr26	2.0-3.3	1.2max	0.3-1.5	>23.0-30.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
	ZQCr20	2.0-3.3	1.2max	0.3-1.5	>18.0-23.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
	ZQCr15	2.0-3.3	1.2max	0.3-1.5	>14.0-18.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
	ZQCr12	2.0-3.3	1.2max	0.3-1.5	>10.0-14.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
	ZQCr8	2.1-3.3	2.2max	0.3-1.5	7.0-10.0	0-1.0	0-0.8	–	≤0.10	≤0.06
	ZQCr5	2.1-3.3	1.5max	0.3-1.5	4.0-6.0	0-1.0	0-0.8	–	≤0.10	≤0.10
	ZQCr2	2.1-3.6	1.5max	0.3-1.5	1.0-3.0	0-1.0	0-0.8	–	≤0.10	≤0.10

3. Technical indicators

Name	Brand	Hardness	Breakage rate	Impact value	Balls number	Micro structure
High chrome alloy casting steel cylpebs	ZQCr26	>58	<1%	>7J/CM^2	≥12000	M+C
	ZQCr20	>58	<1%	>6J/CM^2	≥12000	M+C
	ZQCr15	>58	<1%	>5J/CM^2	≥12000	M+C
	ZQCr12	>58	<1%	>3.5J/CM^2	≥12000	M+C
	ZQCr8	>58	<1%	>3J/CM^2	≥12000	M+C
Middle chrome alloy casting steel cylpebs	ZQCr5	>47	<1%	>2J/CM^2	≥10000	M+C
Low chrome alloy casting  steel cylpebs	ZQCr2	>45	<1%	>1.5J/CM^2	≥8000	P+C