Numerical Investigation of Slurry Erosive Wear Due to Multiple Particle Impact (original) (raw)
Related papers
2018
This paper presents a novel approach to predict the slurry erosion behavior of AISI304 steel substrate using mathematical modeled equation based on statistical method. To develop the modeled equation physical experimentation based on Taguchi L9 Design matrix was carried out by varying three operating process parameters, such as slurry concentration, impact velocity and impact angle. The output parameter in terms of erosion loss is measured. The effect of various parameters was analyzed using Taguchi analysis. It was observed that slurry concentration and impact velocity have a noteworthy influence on slurry erosion behavior of the target material. Based on the experimental result of the steel, mathematical model based on regression approach was developed. To assess the effectiveness of mathematical model equation, results were predicted for range of condition and compared with the experimental results. It was found that predicted results are in good conformity with experimental resu...
Investigating slurry erosion behavior of a hydro-machinery steel under various impingement variables
Materials Today: Proceedings, 2021
SS410 is widely used as a hydro-machinery steel and is generally exposed to the slurry erosion conditions, which decrease its useable-life. In the current investigation, an attempt was made to analyse the effect of slurry erosion on this steel. The slurry erosion testing was done in a slurry erosion test rig, which provides possibility to vary impingement conditions like average particle size, slurry concentration, impingement angle, and velocity of jet. Moreover, some mechanical and metallurgical properties of the steel were also investigated. It was concluded that the slurry erosion rate of the steel increases with increase in the concentration and jet velocity. However, with the increase in average particle size, slurry erosion was found to decrease, which may be due to the lower penetration capacity of higher sand particles. Moreover, slurry erosion, in general, was found to be maximum at a parametric combination of lowest average particle size (150 mm), 60°impingement angle, maximum concentration (45000 ppm), and maximum jet velocity (35 m/sec). Slurry erosion was found to be maximum at an impingement angle of 60°, indicating a mixed mode of erosion (ductile as well as brittle) for the given steel. The mechanisms involved in slurry erosion were found to be crater formation, ploughing, and lip formation followed by its fracture.
Effect of Impacting Particle Kinetic Energy on Slurry Erosion Wear
Journal of Bio- and Tribo-Corrosion, 2015
In the present investigation, the effect of kinetic energy of different materials of the same-sized solid particles is examined on copper as target material using slurry pot tester. Quartz, Silicon carbide and Alumina are the impacting solid particles used for conducting trials. It is understood that the kinetic energy and stress concentration of impacting particles on target surface are responsible for material removal from the target surface, also the effect of erodent property like its shape and density is more dominant at shallow impact angles compared to higher impact angles. However, it is reported in literature that the exponent of velocity varies from 1.87 to 4.00 for ductile materials. Thus, different materials with the same-sized solid particles at constant kinetic energy were used to conduct the experiments. It is observed that for three different materials mass loss for the same mean particle size is nearly constant at 90°orientation angle but variation is found in 30°orientation angle. Further, the SEM micrographs of these solid particles show that alumina have sharp edges and angular nature. Silicon carbide is sub-angular in nature while quartz is blocky in nature. SEM micrographs of eroded surfaces show that at shallow impact angles the material is mainly removed by the platelet mechanism and material is displaced in the direction of flow. Also it is observed that increasing the velocity for quartz particle increases the crater length as compared to other two materials. Erosion wear was found more when alumina are used as the impacting particle due to their angular nature. At normal impact, indentation craters with rim are observed with significance increase in crater size when quartz is used as impacting particles.
Study the Effect of Impact Angle on Slurry Erosion Wear of Four Different Ductile Materials
Materials Today: Proceedings, 2018
The test rig fabricated for the present work has an ability to study the effect of orientation angle of erosion wear. The particles of Indian Standard sand (Quartz) selected as erodent for the present investigation because it is the most widely occurs in natural slurries. Experimental investigations on erosion behavior of ductile materials AISI SS304, AA 6063, Copper and Brass have been carried out using solid-water mixtures of the above erodent. The erosion wear due to solid-liquid mixture of IS Sand and tap water at different impact angles shows typical ductile erosion behavior for the selected materials. The maximum erosion is observed at 22.5° angle for AISI SS 304, 45 o for AA 6063, 22.5 o for Copper and 30 o for Brass. The minimum erosion is observed at 90 o orientation angle for all the materials. The eroded specimens were examined under the Scanning Electron Microscope (SEM) at minimum and maximum wear orientation angles. The SEM micrographs of eroded specimens depict the mechanism of material removal.
Analyze erosion of Mild Steel material on jet erosion tester for slurry transportation system. In this work Mild Steel material will be experimentally investigated under varying velocity of jet, position of angle with respect to constant time duration using jet type erosion wear tester. The wear damage will estimate by means of weight loss techniques. In many application like, techniques of mining, food processing, power generation and other sectors erosion problem is serious in transportation of slurry. Erosion is a critical parameter for design, selection and operation of the hydraulic transportation system. Engineering interest is to estimate the service life of equipment subjected to slurry erosion & to investigate their efficiency. We will select different material used in pipes & pumps and will check it on jet erosion tester and will analyses it on software, results will be compared with theoretical results.
Journal of Al-Azhar University Engineering Sector
The present work is a study of the effect of slurry particle type, impact angle, and velocity, and test duration time on the erosion process of stainless steel 316, 304. Erosion change the surface geometry of the parts, components of machines that will affect the performance and efficiency of the parts may be causing the parts failure. Mud or sand particles were used in water with concentration of 40 wt. %. The particle maximum dimension is 550 µm. Specimens velocities were 2.3m/s and 5.75 m/s using a simple test rig was designed and fabricated to investigate slurry erosion and cavitation erosion. This is done by rotating the specimens in a transparent tank containing slurry with the desired composition and concentration with a fluid. The velocity of specimens can be from zero m/s up to 14 m/s. The specimen weight loss of the eroded sample was examined and was evaluated. The weight loss is measured using a balance with sensitivity of 0.0001g, and the surface is photography using SEM examination. Results show that; the increase of particles hardness results in increase the weight loss. And increase the testing time affecting the wear rate. Also increase velocity increasing weight loss.
Wear, 2011
An erosion prediction method with the objective of determining wear profiles on various geometries due to slurry erosion, based on material wear data acquired from a minimum set of carefully selected laboratory tests and CFD (computational fluid dynamic) simulations has been developed. Data from a single standard laboratory test [Jet Impingement Test on a flat specimen oriented at 90 • to an impinging solid suspension (water and sand)] is characterised using CFD to acquire wear data for a range of erosion parameters as a function of position. This data is used to build a wear map for that specific material-abrasive (316L steel-AFS50/70 sand) combination. The accuracy of this method is assessed by predicting wear from further jet impingement tests at 90 • but under different flow velocities to that used to build the map and subsequently assessing against experiments. A good correlation between predicted and measured wear was observed. An assessment of two phenomenological wear models (which profess to capture wear characteristics as a function of material properties) and one wear model that captures the above wear map statistically through the use of appropriate fitting functions is made.