Micro abrasive blasting (MAB) has been successfully improved by the introduction of a rectangular... more Micro abrasive blasting (MAB) has been successfully improved by the introduction of a rectangular Laval nozzle concept. In this paper the earlier presented set of models has been extended to predict the performance of such nozzles. The results of the sub-model for the jet show that its energy intensity is more evenly distributed and at a substantial higher level compared
Micro abrasive blasting (MAB) is becoming an important machining technique for the fabrication of... more Micro abrasive blasting (MAB) is becoming an important machining technique for the fabrication of Micro Electro Mechanical systems. The process is based on the erosion of a mask-protected brittle substrate by an abrasive-laden air jet. Currently available blasting machines are relatively simple. However, to exploit this technique for applications of industrial interest a more efficient and controllable process is required.
In industrial practice substitution processes are going on from abrasive processes to cutting and... more In industrial practice substitution processes are going on from abrasive processes to cutting and vice versa. To judge the future of grinding the process and machine developments have to be taken into account. The paper shows the interdependence between process and machine innovations. The machine tool developments relevant to grinding processes are investigated on a component and a system level.
Abrasive waterjet (AWJ) cutting has been widely accepted by the industry after the successful int... more Abrasive waterjet (AWJ) cutting has been widely accepted by the industry after the successful introduction of 400 MPa cutting systems. This paper describes the cutting with AWJ beyond the current industrial pressure limit. Firstly, the factors that limit the water pressure are discussed. Secondly, the jet formation is considered by addressing the effects of the geometry of the upstream tube
Micro abrasive blasting (MAB) has been successfully improved by the introduction of a rectangular... more Micro abrasive blasting (MAB) has been successfully improved by the introduction of a rectangular Laval nozzle concept. In this paper the earlier presented set of models has been extended to predict the performance of such nozzles. The results of the sub-model for the jet show that its energy intensity is more evenly distributed and at a substantial higher level compared
Micro abrasive blasting (MAB) is becoming an important machining technique for the fabrication of... more Micro abrasive blasting (MAB) is becoming an important machining technique for the fabrication of Micro Electro Mechanical systems. The process is based on the erosion of a mask-protected brittle substrate by an abrasive-laden air jet. Currently available blasting machines are relatively simple. However, to exploit this technique for applications of industrial interest a more efficient and controllable process is required.
In industrial practice substitution processes are going on from abrasive processes to cutting and... more In industrial practice substitution processes are going on from abrasive processes to cutting and vice versa. To judge the future of grinding the process and machine developments have to be taken into account. The paper shows the interdependence between process and machine innovations. The machine tool developments relevant to grinding processes are investigated on a component and a system level.
Abrasive waterjet (AWJ) cutting has been widely accepted by the industry after the successful int... more Abrasive waterjet (AWJ) cutting has been widely accepted by the industry after the successful introduction of 400 MPa cutting systems. This paper describes the cutting with AWJ beyond the current industrial pressure limit. Firstly, the factors that limit the water pressure are discussed. Secondly, the jet formation is considered by addressing the effects of the geometry of the upstream tube
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Papers by B. Karpuschewski