By C. G. Duan, V. Ia Karelin
A scientific exposition of abrasive erosion and corrosion of hydraulic equipment in either conception and engineering perform. the entire vital matters are mentioned together with basics, calculation, research and numerical simulation of liquid-solid stream layout, erosion-resistant fabrics, interplay among cavitation and abrasive erosion, and corrosion of hydraulic equipment.
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Additional info for Abrasive Erosion and Corrosion of Hydraulic Machinery (Series on Hydraulic Machinery)
The corrosive resistance of a materiel does not play a significant part during the abrasive erosion process. The effect of the microstructure on the erosion resistance of materials during the abrasive erosion process can be illustrated on some non-ferrous metal alloys. It was noticed that the cast and plasticized copper alloys examined in the course of a study (copper, tin bronze, alloy brass, aluminum bronze) turned out to be less resistant than a conventional carbon steel, and their resistance to attrition, in this respect, does not depend on their hardness.
16) where dh is diameter of a particle in the sediment. e with the specified sediment matter densities, and all other things being equal, the intensity of hydraulic abrasion is proportional to the 3rd power of the diameter of solid particles. 17) is in poor agreement with the data obtained in number of experiments. 5 a). 6 4(mm) (b) (a) alteration of relative erosion (b) erosion rate alteration (1. aluminum; 2. 5 a). 18) Fundamentals ofHydroabrasive Erosion Theory 15 where I'h is erosion rate per hour, as related to the sand grain size dh = 1 mm and depending on concentration and mineral composition of sediments.
The stator columns in their upper and lower parts had worn-out journals, whereas the middle portions in these columns were smooth and shiny. Ring-shaped erosion grooves of different depths were revealed at the points where the column border on the bosses accommodated in the spiral case. The erosion pattern in the blades of the guide case was scaly and characterized by different intensity levels. The palaces nearby trailing edges of blades, ad well as those located at the journal parts of lower necks, had the greatest erosion.