engleski

Particle erosion resistance of ductile cast iron

Particle erosion is a wear loss from surface of solid body caused by a relative motion of fluid with solid particles. When impact angle is low (between 0° and 30°), this kind of erosion is called the abrasive erosion. On the other side, if the impact angle is between 60° and 90°, it is considered the impact erosion. One of the advantages of ductile cast iron in relation to other cast irons is its good wear resistance. However, we must consider that wear resistance depends on conditions of wear. Particle erosion resistance is a function of an impact angle and a kind of erosion particles. In this paper, samples of ductile cast iron were eroded with steel balls of two different sizes at six different angles of impact (15°, 30°, 45°, 60°, 75° and 90°). Test results were presented as a loss of mass, which occurred during the test. Wear scars were analyzed by scanning electron microscope. Test results showed that ductile cast iron had a higher abrasive erosion resistance (impact angles 15° and 30°) comparing to its impact erosion resistance (impact angles 60°, 75° and 90°). The angle of 60° had a maximum measured wear.

erosion resistance; ductile cast iron; abrasive erosion; impact erosion

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