Grinding Balls No Longer Grows Slowly With Abrasive Hardness

- Feb 10, 2018-

Temperature: As temperature increases wear increases.

Humidity: The actual project, in the case of metal friction pairs, the liquid into the grinding interface, Grinding Balls wear can be greatly reduced; but in the abrasive wear case, the abrasive water into the wear but become serious.

Particle Size: Abrasive Particle Size: Effect on Wear Grinding Balls wear initially increases linearly with increasing particle size. When a certain value, the so-called critical particle size, is reached, wear growth becomes slow or occurs No longer growing.

More meaningful is the relative hardness of the material and abrasive, or the hardness ratio. Extensive testing of Grinding Balls abrasive wear has shown that there is a relationship between the ratio of material hardness to abrasive hardness and the amount of wear as shown in Figure 2. H1 and H2 in Figure 2, respectively, the hardness of the material M1 and M2. The change of wear volume of two kinds of different hardness materials with the change of abrasive hardness and the change rule of the two kinds of material wear volume ratio, in Fig. 2, for the softer material M1, when the hardness of Grinding Balls abrasive is smaller than that of the material Hardness H1, with the increase of abrasive hardness, wear increased slowly, and when the hardness of the abrasive rose to about the hardness of the material, the abrasive is the most sensitive to abrasive hardness, abrasive hardness exceeds the hardness of the material, continue to increase the abrasive hardness of the wear and tear No effect. There are also the same variation rules for the hard material M2. In summary, the wear can be divided into three areas: Ⅰ low wear area, Hs (1.25 ~ 1.13), where Hm is the hardness of the material, Hs is the hardness of the abrasive, 0.8Hs; Ⅲ high wear area, Hm <1.25Hs.

Low wear zone Ⅰ: The wear in zone Ⅰ is not serious. For the parts with Grinding Balls hardness much higher than that of the processing materials, the effective wear components of the workpieces are not the processed materials but a small amount of high hardness impurities, A few impurities control the wear process. Transition wear zone II: Most of the wear occurs in zone II, when the hardness of the mineral and the workpiece close to improve the hardness of the workpiece can significantly improve the wear resistance of the workpiece, the situation for failure analysis and selection of wear resistant materials It is instructive.

As the hardness of the abrasive further increases, ie into the high-wear Zone III, the Grinding Balls no longer increase or slow with the hardness of the abrasive, blindly increasing the hardness of the material in this zone does not contribute to the improvement of the wear and increases The cost.