Study the Effect of Impact Angle on Slurry Erosion Wear of Four Different Ductile Materials (original) (raw)

Study of the Parameters Affecting Erosion Wear of Ductile Material in Solid-Liquid Mixture

2011

Erosion wear is recognized as an engineering problem for slurry handling equipments. It plays an important role in design and operation of slurry transportation systems. The present work reports experimental investigations on dependence of erosion wear of Aluminum in sand - water slurry. The aim of present study is to analyze the parametric dependence of erosion wear of Aluminum in sand water suspension. Aluminum has been chosen for target material as representative of ductile material. The effect of various parameters such as impact angle, particle size, velocity and solid concentration on erosion wear of Aluminum has been analyzed. A pot tester is fabricated and special fixtures have been developed to conduct erosion wear tests at various impact angles ranging of from 15° to 90°, in steps of 15°. Experiments have been conducted in the solid concentration ( by weight ) range of 20 % to 40 % for three narrow - sized particles of 225 µm, 505 µm, and 855 μm in the velocity range of 3....

Effect of erodent properties on erosion wear of ductile type materials

The present work reports the effect of erodent properties on slurry erosion. Experiments have been performed in a pot tester to evaluate the wear of two ductile materials namely, AA6063 and AISI 304L steel. Solid-liquid mixtures of similar particle sizes of three different natural erodents namely, quartz, alumina and silicon carbide have been used to evaluate the mass loss of the two target materials at different orientation angles. Shape factor for each erodent is determined which show decreasing value for increase in angularity of the particle. It is observed that the wear increases with decrease in the shape factor and increase in the density. The surface morphology shows deep craters and higher value of average surface roughness for angular particles, compared to the blocky shape particles.

Development of Correlations for Predicting the Slurry Erosion of Ductile Materials

Journal of Tribology, 2011

Material loss due to erosion is a serious problem associated with the flow of solid-liquid mixtures. In the present work, erosion wear tests have been carried out in a slurry pot tester for seven different ductile type materials namely aluminum alloy (AA6063), copper, brass, mild steel, AISI 304L stainless steel, AISI 316L stainless steel, and turbine blade grade steel using three different erodents namely, quartz, alumina, and silicon carbide. Experiments have been performed at different orientation angles of target material at the velocities of 3, 6, and 8.33 m/s for solid concentrations of 10%, 20%, and 30% (by weight) and particle sizes of 363, 550, and 655 μm. The contribution of cutting wear in the total wear of ductile material at various orientation angles has been determined. It is observed that the maximum cutting wear angle for the ductile material depends on its hardness and a correlation is developed for its prediction. Also a methodology is proposed for estimation of t...

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.

A Study on Surface Behavior of Ductile Material in Erosion

In order to get a better understanding of the pipeline surface behaviour and its influence on wear mechanisms, erosion tests were performed using a micro-sandblaster under a constant particle flux and different impact parameters. Angular silicon carbide (SiC) particles were entrained into a stream of compressed air to impact on a mild steel surface. Particle mass flow rate was selected to allow a sufficient mass loss to occur. The erosion rates were calculated from the mass loss of each target sample and the mass of erodent used. Experimental results confirmed that at shallow impingement angles, erosion was mostly dominated by cutting wear mechanisms, while at the higher angles, erosion is dominated by deformation wear mechanisms. Subsequently, the worn surfaces and their cross-sections have been studied using scanning electron microscope (SEM) to relate the sub-surface damage characteristics with wear mechanisms.

Erosion wear studies on high concentration fly ash slurries

Wear, 2017

Erosion is an unavoidable phenomenon in the pipelines transporting bulk solids in both hydraulic and pneumatic conveying modes. Erosion wear depends on a number of factors like hardness of the material, size and shape of the solid particles, solid concentration, velocity of particles, impact angle of solids on the target material surface etc. Several investigators have made systematic studies to establish the functional dependence of erosion wear on various parameters. In the case of hydraulic conveying of the solids in slurry form, most of these studies are limited to low and medium solid concentrations only. But with the advent of new economical, environment friendly and water saving technology of solid conveying in the form of high concentration slurries (HCSD) the study of erosion wear at these concentrations becomes necessary. Hence, in the present study a modified pot tester capable of operating at high concentrations (C w 460% by mass) has been designed and fabricated. Measurements have been made with fly ash slurries at various concentrations (in the range 50% to 70% by mass) and relative velocities (in the range 1 to 4 m/s). It is observed that the parametric dependence of erosion wear at high solid concentrations is at variance with that observed at lower concentrations. The erosion wear was found to have a stronger dependence on concentration as compared to relative velocity. Studies are also conducted to investigate the effect of variation of angle of impact on the erosion wear at a solid concentration of 65%(by mass) and it is noticed that erosion rate shows a maximum at an angle of 45°.

Simulate the Erosion Wear of AISI SS 304L due to Solid- Liquid Mixture

A Jet erosion is normally used to study the relative erosion behaviour of different material at moderate solid concentration, velocity, and particle size and impact angle. A slurry pot t is then fabricated by inserting propeller from the bottom of the cylinder and is rotated at the speed required for uniform distribution. The test specimens are then 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. Erosion of materials is occurs due to the impact of high velocity of slurry which is comes out from the nozzle and impacting on the test specimen. Two different experiments are conducted preliminarily first for repeatability test for fix parameters such as angles from 150 to 900 in six intervals of 150 difference,particle size 655micron, and 10% solid concentration for 120 minutes The results were obtained for ductile material and are found in good arrangement with the literature.