Tungsten Carbide Hydraulic Sand-blasting Nozzle Abrasion III

If the sand impacts the inside wall with a larger angle, whose hardness is lower than nozzle material, the surface of nozzle will be out of shape. And the water flow will harden the surface, which small cracks come into be some new cracks so that the strain exceeds the ultimate strength and falls off finally. This is fatigue wearing. Although tungsten carbide nozzle has good hardness and toughness, it belongs to fragile materials. Its inner wall is wearing the sand flow impact and water flow is squeezing into through the cracks, which called brittle rupture abrasion.









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