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Abstract
In this paper is studied the issue of thick steel sheets cutting on abrasive waterjet machine, due to the abrupt curvature of the jet, caused by energy loss at high thicknesses. Depending on the hardness of the processed material, incomplete cutting occurs and it is evident at a thickness of sheets larger than 30-50 mm. Achieving a cutting with different configuration regimes implies on most of the equipment, turning off the machine, a new configuration and restarting the process of abrasive waterjet cutting which leads to the appearance of traces and marks on cut surface. Choosing the parameters in such a way that cutting is achieved (automatic configuration), leads to obtaining an uncut zone at the exit of the material. This uncut area can be eliminated by an oversized configuration of input parameters, or just reduced by a randomly selected configuration. Both cases lead to large economic losses. The correct choice of machining regime for abrasive cutting of thick sheets, depending on the thickness and the hardness of the material is the aim of these studies and proposed calculation method can be implemented.
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