Development of an algorithm for optimum control process to compensate the nozzle wear effect in cutting the hard and tough material using abrasive water jet cutting process

Control of laser cutting by process timing

“…It is again possible, in agreement with general opinion, to speak about the complexity of the issues to be resolved, both from the experimental and analytical perspective. From numerous published research works, which dealt with these issues, and which can be used as sources of opinions, we can cite the works [5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The issues concerning the laser and other technologies using flexible working tool are complicated by considerable differences of the tool feed rate along the surface of the sample in comparison with the rate of penetration of the disintegration tool into material, i.e.…”

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 main technological parameters of influence on the process of AWJ which are considered by the comprehensive researches until present day [3][4][5][6][7][8][9][10][11][12][13] are: the water pressure, the traverse speed, the abrasive flow rate and the distance between the nozzle and the surface of the material to be cut, usually called standoff distance. The water pressure directly influences the process productivity and costs and almost all researches agree that it is better to use the maximum value given by the equipment.…”

“…There is a larger number of parameters which have an influence on the quality and cost of the process [5]. In the last decade there were published several research studies on AWJ, focusing mainly on the surface roughness, the kerf formation and the influence of the traverse speed on those parameters [6][7][8][9][10][11][12][13]. But each research analysed one type of material and the results have the validity for that type of material.…”

“…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.…”