Introduction of High Chromium Cast Ball

For a long time, some ferrous metal (iron ore) and nonferrous metal beneficiation industries at home and abroad still use low chromium ball and forged steel ball as abrasives and are still widely used. Although some grinding ball manufacturers have done a lot of work to replace low chromium ball and forged steel ball with high chromium ball, their own grinding ball products are not good enough in quality and have no good wear resistance (the hardness is lower than HRC56-59, and the wear resistance is only 1.5 times of that of ordinary low chromium ball), and sometimes even the grinding ball is broken in large quantities. In short, the cost performance ratio is poor, which cannot bring good economic benefits to users, So it has not changed the status quo. Practice has proved that it is a trend to replace low chromium ball and forged steel ball with ultra-hard high chromium ball in mines. Most foreign mines have already adopted ultra-hard high chromium ball as abrasive body.

In recent years, Ningguo Zhongyi Wear-resistant Material Co., Ltd. has continuously developed and developed a series of new products (combined with the industry and user working conditions), especially the ultra-hard high-chromium ball specially used for mining, which is soon favored by mining users after being put into use in the market. The product has a high hardness (HRC) of 63-67, an impact value ≥ 4.0J/cm2 or more, and its wear resistance is 2 times that of ordinary low chromium ball and 2.2 times that of forged steel ball (its wear resistance is 1.5 times that of GB/T17445-2009 high chromium ball); According to the user's actual use inspection, the steel ball crushing rate is ≤ 0.3% (much lower than the national standard and the level of similar enterprises). In addition, our company has developed products containing more than 30% chromium for export. Due to the good wear resistance of this kind of special high chromium ball for mine, low single bin wear, high grinding efficiency, stable grading of the steel ball in the mill is not easy to change, which not only increases the fineness of the ore powder to a certain extent, improves the output per hour, but also ensures the quality of the ore powder; At the same time, the period of adding balls is extended, and the labor intensity of workers is greatly reduced, especially the number of adding balls.