Recently, significant investment has been made in the development and optimization of the
machining processes to ensure higher productivity, lower processing costs, high precision,
and quality of products. Researchers have already developed classic processes that employ
cryogenic cooling, which can similarly optimize the process of machining with abrasive
water jet (AWJ). We observed how supercooling impacted the stainless steel X5CrNi18-10
and aluminium alloy AlMg4.5Mn0.7 workpieces. The samples were cooled by liquid
nitrogen to -198 °C and engraved with AWJ. The results were compared with the
experiments with samples conducted at room temperature. We monitored the change in
temperature during cooling and engraving. The change in the efficiency of the process was
evaluated according to both the quantity of the eroded material, which was calculated as the
difference in the mass of the sample before and after the processing, and the depth of the
engraving.
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