Experimental research on the machinability of Hardox steel by abrasive waterjet cutting

Abstract

Abstract.One of the main present industry challenges is finding the most efficient manufacturing process for a certain part. When parts are made of strong steels like Hardox, their fabrication method is usually difficult. Abrasive waterjet cutting (AWJ) is one of the cutting processes which can be used in this case. This paper presents an experimental research on the machinability of Hardox steel by AWJ. The experiments were conducted using a factorial design model considering two of the main influence parameters like the traverse speed and the distance between the nozzle and the surface of the material. Based on the measurement of the dimensions and the roughness of the parts, the influence of the parameters was revealed and analyzed. The manufacturing time was also compared, as it directly influences the production cost. Further research is considered to develop a mathematical model which can be used for a proper choice of the process parameters depending on the initial requirements.

An experimental study on the dimensional accuracy of holes made by abrasive waterjet machining of Hardox steels

“…The levels of these parameters are presented in Table 3. The levels of the traverse speed were chosen based on previous experiments done by others [6][7][8][9][10][11][12][13] and by the authors [14] for the type of material which was tested. The levels for the other parameters were chosen based on some practical considerations about the use of Hardox steels in the real workshop of the company which is partner in this research project.…”

“…The authors of this paper have made some previous studies on the AWJ of this materials [14] aiming to reveal the machinability of Hardox steels by abrasive waterjet machining. Some other research papers [11,13] proposed regression models of the dependence between the traverse speed, the water pressure, the abrasive flow rate and the roughness of the surface which is obtained after the process.…”

Preliminary study on occurrence of composite material delamination processed by abrasive water jet cutting

“…The most important problem is material delamination due to the high velocity impact of the jet [4][5]. In figure 2 is illustrated the delamination in case of CFRP [8].…”

“…AWJ cutting is a good solution for processing CFRP because of reduced interface temperature, low mechanical loading, better surface integrity, low tool wear, and small cutting forces [3][4][5]. The AWJC uses pressurized water, which acts either by itself at a very high pressure, or in connection with the erosion of the abrasive particles, added into the water jet [6][7].…”

Investigation on standoff distance influence on kerf characteristics in abrasive water jet cutting of composite materials

“…Abrasive water jet is used in various machining operations, like cutting [6], milling [7], drilling [8] and turning [9]. This innovative processing solution can be applied in processing for a wide range of materials like aluminium [10], steel [11], stainless-steel [12], composites [13], titanium alloy or even ceramics and diamond [14].…”