Research into the Disintegration of Abrasive Materials in the Abrasive Water Jet Machining Process

Perec, Andrzej

doi:10.3390/ma14143940

Cited by 22 publications

(16 citation statements)

References 25 publications

(26 reference statements)

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“…The phenomena occurring in the workpiece are accompanied by local heat generation causing a local increase in temperature. Another effect that the impact of high-pressure water has on the material is its erosion [ 26 ]. Thus, during the AWJM process, part of the kinetic energy in the jet is converted to thermal energy, causing a local change in temperature in the jet impact zone.…”

Section: Theoretical Approachmentioning

confidence: 99%

Influence of Local Temperature Changes on the Material Microstructure in Abrasive Water Jet Machining (AWJM)

et al. 2021

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This article considers effects of local heat transfer taking place insteel cutting by abrasive water jet machining (AWJM). The influence of temperature changes during AWJM has not been investigated thoroughly. Most studies on AWJM suggest that thermal energy has little or no effect on the material cut. This study focused on the analysis of the material microstructure and indentation microhardness in the jet impact zone and the adjacent area. The structure features revealed through optical metallography and scanning microscopy suggest local temperature changes caused by the impact of the abrasive water jet against the workpiece surface. From the microscopic examinationand hardness tests, it is clear that, during the process, large amounts of energy were transferred locally. The mechanical stress produced by the water jet led to plastic deformation at and near the surface. This was accompanied by the generation and transfer of large amounts of heat resulting in a local rise in temperature to 450 °C or higher.

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Section: Theoretical Approachmentioning

confidence: 99%

Influence of Local Temperature Changes on the Material Microstructure in Abrasive Water Jet Machining (AWJM)

et al. 2021

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“…In the literature, the most commonly reported results are the use of high-pressure waterjet for cutting [ 22 , 23 ] rather than cleaning, where the abrasive is usually garnet, corundum, or olivine. There are also published papers addressing the disintegration intensity of abrasives in the high-speed abrasive water jet (AWJ) cutting process [ 24 , 25 , 26 , 27 , 28 ]. New research has also been devoted to optimizing the cutting parameters of SiC-reinforced aluminum composite [ 29 ], and titanium alloy [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

The Use of a High-Pressure Water-Ice Jet for Removing Worn Paint Coating in Renovation Process

et al. 2022

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The paper presents the results of investigations into the possibility of using ahigh-pressure water-ice jet as a new method for removing a worn-out paint coating from the surface of metal parts (including those found in means of transportation) and for preparing the base surface for the application of renovation paint coating. Experimental investigations were carried out in four stages, on flat specimens, sized S × H = 75 × 115 mm, cut from sheet metal made of various materials such as steel X5CrNi18-10, PA2 aluminium alloy and PMMA polymethyl methacrylate (plastic). In the first stage, the surfaces of the samples were subjected to observation of surface morphology under a scanning electron microscope, and surface topography (ST) measurements were made on a profilographometer. Two ST parameters were analysed in detail: the maximum height of surface roughness Sz and the arithmetic mean surface roughness Sa. Next, paint coatings were applied to the specimens as a base. In the third stage, the paint coating applied was removed by means of a high-pressure water-ice jet (HPWIJ) by changing the values of the technological parameters, i.e., water jet pressure pw, dry ice mass flow rate m˙L, distance between the sprinkler head outlet and the surface being treated (the so-called working jet length) l2 and spray angle κ for the following constants: the number of TS = 4 holes, water hole diameter φ = 1.2 mm and sprinkler head length Lk = 200 mm. Afterwards, the surface morphology was observed again and the surface topography of the specimen was investigated by measuring selected 3D parameters of the ST structure, Sz and Sa. The results of investigations into the influence of selected HPWIJ treatment parameters on the surface QF removal efficiency obtained are also presented. Univariate regression functions were developed for the mean stripping efficiency based on the following: dry ice mass flow rate m˙L, working jet length l2 and spray angle κ. Based on these functions, the values of optimal parameters were determined that allow the maximum efficiency of the process to be obtained. A 95% confidence region for the regression function was also developed. The results demonstrated that HPWIJ treatment does not interfere with the geometric structure of the base material, and they confirmed the possibility of using this treatment as an efficient method of removing a worn paint layer from bases made of various metal and plastic materials, and preparing it for applying a new layer during renovation.

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“…The properties of abrasive grains [ 15 , 16 ], especially geometric parameters, are important in AWJ processes for achieving high efficiency and accuracy [ 17 ] on the treated surfaces.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Tool Steel Cutting by Water Jet with Recycled Abrasive Materials

et al. 2022

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High-pressure water jet machining is characterized by wide possibilities of cutting diverse materials together with multi-layer materials with dissimilar properties, accurate cutting complex profiles, as well as conducting them in uncommon conditions, especially in cases of thick materials. An additional advantage of water jet technology is its environmental friendliness. This paper presents tests of the cutting performance of tool steel with the use of an abrasive water jet (AWJ). The state-of-the-art has shown insufficient scientific evidence in AWJ tool steels cutting using recycled abrasive materials. Therefore, the main motivation for this paper was to carry out research from an environment aspect. The reuse of abrasives and the use of recycled materials have immense potential to reduce processing costs while remaining environmentally friendly. The RSM method was used for modeling and optimization. A response surface design (RSM) is a package of an advanced design-of-experiment (DOE) approaches that support better understanding and optimize response, exploring the relationships between several explanatory variables and one or more response variables. Based on this research, feed rate is the key factor influencing the depth of cut, while the water nozzle diameter has a secondary effect, and the concentration of abrasive has the least influence on the depth of cut. High level of variance (the percentage of variability in the reaction that is interpreted by the formula) confirms that the models fit well to the investigational data.

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Research into the Disintegration of Abrasive Materials in the Abrasive Water Jet Machining Process

Cited by 22 publications

References 25 publications

Influence of Local Temperature Changes on the Material Microstructure in Abrasive Water Jet Machining (AWJM)

Influence of Local Temperature Changes on the Material Microstructure in Abrasive Water Jet Machining (AWJM)

The Use of a High-Pressure Water-Ice Jet for Removing Worn Paint Coating in Renovation Process

Efficiency of Tool Steel Cutting by Water Jet with Recycled Abrasive Materials

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