Abstract
A Jet erosion tester is designed and used to study the relative erosion behavior of high chromium white cast iron (ASTM 532A) at specific concentration of silica sand as an abrasive material, 45° impact angle and two size of abrasive particles. A slurry pot was used which contains two propellers rotated at the speed required for uniform distribution. The test specimens are mounted on test fixture which is fixed and has a provision to move in different angular position to find out the wear for different angles. Two different experiments are conducted preliminarily by using silica sand as abrasive with particle size of 400-600 µm and 600-800 µm. Impact angle of 45° and solid abrasives of 20% wt. concentration are used as fixed parameters for 10 hours. It was found that the erosion resistance decreases with increasing the abrasive particle size.
Highlights
Slurry erosion is caused by the interaction of a liquid suspension of solid particles and a target which experiences loss of material by the repeated impact of suspension particles
Slurry erosion has long been a serious problem in a variety of applications; including the mineral processing, cement manufacturing, slurry pumping, pulp, and paper manufacturing industries (Pearce, 2002, Llewellyn et al, 2004, Zhi et al, 2008), since it is one of the main sources of failure in many industrial applications
The photograph and schematic diagram for the jet erosion tester are shown in Fig. 1 and Fig. 2, they show that the test rig consists of important part namely as slurry pot, this pot has 110-liter capacity
Summary
Slurry erosion is caused by the interaction of a liquid suspension of solid particles and a target which experiences loss of material by the repeated impact of suspension particles. These parts of a system in which erosion is taking place are connected through the flow field which has a strong bearing on the rate of material loss from the eroding body and the time to failure of engineering parts in service (Clark, 1992, ASM, 1992). The slurry erosion is a complex phenomenon and it is not yet fully understood because it is influenced by many factors, which act simultaneously These factors include flow field parameters, target material properties and erodent particle characteristics. The maximum erosion wear occurs at 90 degrees' impact angle in case of brittle materials (Desale et al, 2009, Thakur et al, 2015)
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