Machining of Wood Plastic Composite Using AWJ Technology with Controlled Output Quality

Abstract

The paper deals with the application of abrasive water-jet cutting to composite material containing natural reinforcement—wood plastic composite. The specimens were cut through the application of four flows of different abrasive mass: 150, 200, 250, and 300 g·min−1, respectively, and under different traverse speeds required to achieve the (expected) quality level Q1–Q5 (according to the SN 214001: 2010 standard). The output quality of Q1–Q5 was set in the CNC cutting programs and the real traverse speed values were calculated by machine control system according to change in the flow of the abrasive mass. The quality of surface topography was assessed using a tester (contact roughness) and an Inspectis digital zoom microscope. The results of topography–surface roughness parameters Ra presented here are compared with the values normalized for individual samples sets. The applied technology, i.e., the AWJ, eliminated the problem of tool wear and adhesion of the thermoplastic matrix to tool surfaces (compared to standard machining).

The Influence of the Use of Technological Waste and the Simulation of Material Lifetime on the Unnotched Impact Strength of Two Different Polymer Composites

“…For the purposes of the experimental measurement, we used an impact hammer with a nominal energy of 5 J for the PBT material before exposure to elevated temperature. A hammer with a nominal energy of 2 J was used for the PBT after exposure and the PPA before and after exposure [ 16 , 17 , 18 ].…”

Design of a Spiral Double-Cutting Machine for an Automotive Bowden Cable Assembly Line

“…Diamond disk cutting can be an alternative that greatly reduces pollution generation and improve performance with a respective increase in service life, but with a higher cost [26]. Other cutting techniques such as abrasive waterjet [27] or laser cutting [28] have been explored for metallic and composite materials with success, although the parameters must be optimized for each application. Abrasive waterjet cutting in particular involves a good edge sharpness and low initial investment and avoids the heat-affected zone [29], but for spiral cutting can promote the water ingress to the spiral.…”

Editorial for Special Issue “Advances in Computer-Aided Technology”

“…The article by Mitalova et al describes the initial study and development in the field of machining one kind of composite material with natural reinforcement WPC with AWJ. The influence of selected technological factors on the topography of resulting surfaces has been studied in particular [3]. The article of the authors Lishchenko et al describes research on how to develop information signals in time and frequency domains containing the surface quality diagnostic features to monitor the 3D-printing technological system state.…”