The Sand Flow Influenced Tungsten Carbide Porous Nozzle II

The size of sand grain has obvious influence on the abrasion of nozzle. When the grain is small and its kinetic energy is also small so that the impact to nozzle material will be small and has elastic deformation. When the sand grain size exceeds a certain range, material impact is enough to cause fracture. If the size of grain increases further, the nozzle material is also cut deeper, the abrasion is more serious. But when the particle size increases to a certain degree, "size effect" will occur. This is due to the force area material will also increase, the material wear size increases with increases slowly. In addition, the shape of grain will affect the abrasion. The smoother shape of the grain (form factor＜1), the slighter abrasion.















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