Steel Grinding Balls, Brand Name : Zhicheng, Dimension : 8-140mm

1，definition：cast grinding ball is a crushing medium in the ball mill,which crushes the material in the ball mill.
2，applied：metallurgical mines；cement plant；power station；gas desulfurization；magnetic materials；chemical industry；coal water slurry;etc
3，size：
1）cast grinidng balls：￠8mm---￠150mm
2）cast grinding bar：￠8×10㎜～￠40×45㎜
4，chemical composition
chrome content                    chemical composition(%)
c si mn cr mo ni p s
cr10 1.8--3.3 1.2max 2.5max 10--15 low1.5 a little 0.08max 0.08max
cr1--3 1.8-3.5 1.4max 1.2max 1--3 low1.0 a little 0.08max 0.08max
cr 3--7 2.0-3.2 1.2max 0.5-1.5 3--9 low1.0 a little 0.08max 0.08max
cr＞10            varies according to the requirements
5.mechanical properties
item                mechanical properties
 
  hardness ak(jcm²) microstructure wear rate breakage rate times of falling
cr ＞10 58-68hrc 2.5max m+c 25grt.m ＜1% 108000min
cr ＜10 45-57hrc 1.6max p+c 80grt.m ＜1% 10000min
                     c-carbide   p-pearite   m-martensite