Abrasive Water Jet Cutting of Hardox Steels—Quality Investigation

Abstract

The paper aims to study the surface quality dependency on selected parameters of cuts made in Hardox™ by abrasive water jet (AWJ). The regression process was applied on measured data and the equations were prepared for both the Ra and Rz roughness parameters. One set of regression equations was prepared for the relationship of Ra and Rz on cutting parameters—pumping pressure, traverse speed, and abrasive mass flow rate. The second set of regression equations describes relationships between the declination angle in kerf as the independent variable and either the Ra or the Rz parameters as dependent variables. The models can be used to predict cutting variables to predict the surface quality parameters.

Sequential Smoothing Treatment of Glass Workpieces Cut by Abrasive Water Jet

“…An appropriate combination of AWJM input parameters is important to achieve the required machining efficiency and the material’s surface qualities. This has been described in the literature by Krenicky et al [ 5 ]. The authors presented an interesting study on the influence of the cutting process parameters of the water jet cutting of HardoxTM steels on the surface quality.…”

“…This makes the high-pressure water jet a versatile technological tool with an ever-widening range of machining applications, including, among others, mechanical engineering, automotive, aviation and aerospace industries, plastics production and even medicine. A highly concentrated water jet with abrasive grains enables the shaping of a wide range of modern and conventional materials, such as metals and their alloys [ 5 , 6 , 7 , 8 , 9 ], composites [ 10 , 11 ], glass [ 12 ], ceramics, natural stone-based materials [ 13 ], and it may serve the purpose of regenerating the cutting ability of grinding tools [ 14 ].…”

3d Evaluation of the Topography of the Surface by Abrasive Water Jet Machining Technology

“…The permeate, which carries the kinetic energy of the abrasive, washes away the products of the removal from the cutting site and ensures cooling of the cutting site. Precisely because of the cooling of the cutting point, this material cutting technology is more advantageous than conventional cutting technologies, in which undesired heat is introduced into the cut materials with a consequent change in structure, deformation and change in visual appearance [Mascenik 2014]. A device with a WJ4020 1Z-C0-PJ60 COBRA coordinate table from PTV Praha and a PTV56-60 high-pressure pump from FLOW SYSTEMS was used to separate the samples.…”

Nozzle Condition Monitoring System Using Root Mean Square of Acoustic Emissions during Abrasive Waterjet Machining

“…Pure waterjets are used to cut soft materials such as foods, medicines, fabrics, or wood. Such waterjets cannot cut metals or hard composites, so an abrasive waterjet (AWJ) is required [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Water at 300-600 MPa and abrasive particles (#50-200 mesh) are mixed, ejected at high speed via a nozzle (bore size 0.24-0.40 mm), and the material is cut by the jet stream.…”