Effect of impact angle, exposure time, and particle size on impact erosion

Ediriweera, Mahesh; Chladek, Jana; Ratnayake, Chandana

doi:10.1080/02726351.2019.1663328

Cited by 12 publications

(4 citation statements)

References 27 publications

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“…A sharp rise in erosion rate is observed for 362.5 μm mean particle size, which implies higher erosion for particle size greater than 300 μm. Similar erosion wear behaviour of ductiletype material is reported by Ediriweera et al [39] for the particle size bigger than 350 μm. The increase in erosion rate with particle size may be due to the larger kinetic energy of abrasive particles and increased collision efficiency [39].…”

Section: Erosion Of Aisi 304 Steel and Ca6nm Steelsupporting

confidence: 87%

“…Similar erosion wear behaviour of ductiletype material is reported by Ediriweera et al [39] for the particle size bigger than 350 μm. The increase in erosion rate with particle size may be due to the larger kinetic energy of abrasive particles and increased collision efficiency [39]. Bitter [40] also reported that the observed peak after a respective mean particle size might be due to the removal of surface material by the conserved kinetic energy of solid particles.…”

Section: Erosion Of Aisi 304 Steel and Ca6nm Steelsupporting

confidence: 87%

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Experimental study on erosion of hydro-turbine grade steels due to solid particle impact

Sharma

Gandhi

2021

Tribology - Materials, Surfaces & Interfaces

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The present work has been performed to understand the erosion of hydro-turbine steels due to the impact of suspended sediment using a high-speed pot tester. Experiments have been performed at five different velocities of 13-32 m/s and four different mean particle sizes of 143-362.5 μm for the sand concentration of 3000 ppm. The orientation angle of the wear specimens was varied from 15°to 90°using an angular disc. Correlations for cutting and deformation have been developed to estimate the total erosion wear. The erosion mechanisms are also studied by scanning electron micrographic analysis of the eroded surface. The velocity exponent for CA6NM steel is observed as 2.07 and 2.14 for cutting and deformation wear rates, respectively, significantly higher than that observed at low velocity ranges. The correlation developed may be further used for numerical estimation of erosion.

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Section: Erosion Of Aisi 304 Steel and Ca6nm Steelsupporting

confidence: 87%

Section: Erosion Of Aisi 304 Steel and Ca6nm Steelsupporting

confidence: 87%

Experimental study on erosion of hydro-turbine grade steels due to solid particle impact

Sharma

Gandhi

2021

Tribology - Materials, Surfaces & Interfaces

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“…If the disc orientation increases, the impact of the particle stream appears to be based on deformation wear mechanism up to 90° impact angle. 22 In this present case, 60°-disc orientation shows lowest surface roughness value compared with lowest and highest disc orientation. The maximum S/N ratio value was obtained at 60° disc orientation, and the S/N ratio increases up to 60° disc orientation.…”

Section: Resultsmentioning

confidence: 47%

Process optimization and removal of phenol formaldehyde resin coating using mechanical erosion process

Palaniyappan¹,

Veiravan²,

Kumar³

et al. 2022

Progress in Rubber, Plastics and Recycling Technology

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Consumption of coated abrasive discs in various automobile and pipe fitting application is increasing, due to its good surface finish. Coated abrasive disc consists of single layer of abrasive grain bonded to a fibre backing. The major portion of the disc is comprised of fibre backing. But the sustainability of the fibre backing is low and is dumped as waste after usage. The present work deals with the removal of resin coating and recovery of fibre backing from the spent coated abrasive discs using physical separation process such as sand blasting technique. Initially, the recovery experiment was carried out based on L16 orthogonal array. The factors and levels chosen for the experiments were erodent pressure (0.2, 0.4, 0.6 and 0.8 MPa), erodent size (36, 60, 80 and 120 grit), disc orientation (30, 45, 60 and 75°) and number of times flexing (5, 10, 15 and 20). The experimental result shows that erodent size and erodent pressure have a major impact on recovery of the fibre backing. The surface structure of the recovered backing was analysed using scanning electron microscopy and optical microscopy. The recovered backing was very much useful for the coated abrasive industry as the flexible backing and support material for abrasive grain coating.

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“…There is a close relationship between particle erosion and particle injection angle. 29,30 The previous analysis proved that on the blade surface, the vortex can cause the strong local disturbance, which makes the local sediment particles obtain great local acceleration, results in faster and stronger sand erosion. Figure 22 shows the particle distribution in the impeller and the maximum injection angle of particles at the impeller inlet at three different moments.…”

Section: Effect Of Fsv On Injection Angle Of Particlesmentioning

confidence: 99%

Numerical prediction of the effect of free surface vortex air-entrainment on sediment erosion in a pump

Song

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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Sediment erosion through synergetic effects between free surface vortex (FSV) and particle erosion in silt-laden flow seriously affects the safe operations of pump. The purpose of this paper is to study the influence of free surface vortex entrainment on the erosion inner the pump impeller, aimed at the FSV and sediment erosion in sediment laden flow in a pump station of Yellow River, a new Eulerian-Lagrange approach was applied to simulate the sediment-laden flow by combining the Lagrange particle tracking approach and Volume of Fluid (VOF) method, followed by the application of Tabakoff model to estimate the erosion. Volume of fluid method was used to simulate the continuous flow FSV, and Lagrange method the particle trajectory. The theoretical model and filed results on site were used to verify the reliability of the proposed approach. Free surface vortex on particle motion and microscopic interactions between air and erosion were reviewed and discussed. Combined with the theoretical analysis and calculation results, the particle impact angle in the impeller was analyzed, and the erosion types were defined. Air entrainment by FSV does not directly erode the impeller components, but mainly changes the position, the local velocity and the concentration of the particles, which aggravates the sediment erosion in the impeller. Interestingly, air entrainment can reduce the surface erosion at some instantaneous moments. The present work may provide important engineering insights to resolve the erosion.

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Effect of impact angle, exposure time, and particle size on impact erosion

Cited by 12 publications

References 27 publications

Experimental study on erosion of hydro-turbine grade steels due to solid particle impact

Experimental study on erosion of hydro-turbine grade steels due to solid particle impact

Process optimization and removal of phenol formaldehyde resin coating using mechanical erosion process

Numerical prediction of the effect of free surface vortex air-entrainment on sediment erosion in a pump

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