Abstract
Abrasive waterjet (AWJ) cutting technology is one of the most recent developed non-traditional processes used in industry for the processing of difficult-to-cut materials which usually lead to a pronounced wear of conventional tools and generation of damaged surfaces. The efficiency and the quality of AWJ depend on many parameters, some of them precisely controllable (e.g. water jet pressure, feed rate) while others uncontrollable (e.g. focusing tube size, waterjet orifice size). The aim of current study was to analyze the influence of feed rate at low working pressures on the quality of cuts, quantified by the parameters specified in the ISO/WD/TC44 N 1770 standard.
Highlights
IntroductionThe most common application of the abrasive water jet technology is cutting, due to the distinct advantages over other cutting processes as: it does not induce thermal distortions in the workpiece that may alter its mechanical properties or visual appearance; it has the ability to cut virtually any material, in any direction, without excessive forces; no burrs or rough edges are formed that may require subsequent removal; it is environmentally friendly [6, 7]
The aim of current study is to analyze the influence of feed rate at low working pressure on the quality of cuts performed by Abrasive waterjet (AWJ), quantified by the following parameters: width of the processed surface at the jet inlet (Li)/outlet (Lo), deviation from perpendicularity (u), inclination angle (α) and surface roughness (Ra)
The explanation is related to the amount of abrasive grains that come in contact with the material to be processed, which is smaller for higher feed rates
Summary
The most common application of the abrasive water jet technology is cutting, due to the distinct advantages over other cutting processes as: it does not induce thermal distortions in the workpiece that may alter its mechanical properties or visual appearance; it has the ability to cut virtually any material, in any direction, without excessive forces; no burrs or rough edges are formed that may require subsequent removal; it is environmentally friendly [6, 7] All these advantages can be achieved if the proper combination of process parameters (hydraulic, abrasive, work material and cutting parameters – Figure 1) is chosen. The aim of current study is to analyze the influence of feed rate at low working pressure on the quality of cuts performed by AWJ, quantified by the following parameters: width of the processed surface at the jet inlet (Li)/outlet (Lo), deviation from perpendicularity (u), inclination angle (α) and surface roughness (Ra)
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