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Use cast steel grits as abrasive and counterweight to use wear degree

2021-05-27 09:50:21   Review:0 Click:
  The size, shape and orientation of cast steel grit have great influence on abrasive wear. They affect the load and stress from elastic contact to plastic contact, and cause the change of critical fracture indentation size and groove size.

  Conversely, if the load and hardness are constant, the contact area is also a constant, which depends on the size and shape of the abrasive. When the vertex angle of the cone, the vertex angle of the cone and the radius of the sphere decrease, the D / a value increases. The 4 / 4 value of cast steel grit is usually smaller than that of a cone or a cone, so the wear rate of a sharp abrasive is higher than that of a blunt abrasive, especially because the pressing depth F of the cone is larger, which is easy to exceed t. Cast steel grit causes the occurrence and propagation of cracks.

  It is difficult to calculate the wear rate quantitatively according to the size and shape of the abrasive under the actual working condition, although it is being explored at present. Because in any environment, the size of the cast steel grit is always in a certain range, the size, shape and orientation are not uniform, and there are cracks in the process of wear, and the contact area of the abrasive is usually only 10 ~ 30% of the total area. The wear rate depends not only on the size, shape and orientation of the abrasive, but also on the performance of the surface layer and the friction coefficient.

  This is the wear of cast steel grit used as abrasive and counterweight, which is related to shape and size.

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