Chengde Rongmao Cast Steel Co.,Ltd

Size of casting iron ball:<br />
Small size: Ø10mm--Ø40mm;      <br />
Medium size: Ø50mm--Ø90mm;<br />
Big size: Ø100mm--Ø150mm.<br />
Series of balls according to the chrome percentage:<br />
High chrome casting ball: More than Cr:10%;<br />
Medium chrome casting ball: Cr:3%-9%;<br />
Low chrome Grinding ball: Cr:1%-3%.<br />
Features of casting grinding balls<br />
(1) High hardness: surface hardness of casting iron ball is to HRC 58-65. The tolerance of the core hardness and surface hardness is not over 2HRC;<br />
(2) Good Impact Toughness: impact toughness of chrome balls is more than 4J/cm²;<br />
(3) Low Broken Rate: the actual broken rate is not higher than 1%;<br />
(4) Good Wear-resistant: the wearing rate of high cast iron ball is 30-50g/ton in cement industry, 350-430g in gold mines and even lower in some iron mines.