Application of vibration analysis to evaluate waterjet installation focusing tube erosion under cryogenic cooling

The problem of erosive wear in focusing tubes is considered. A phenomenological hypothesis is put forward about the protective properties of cryogenic cooling caused by an ice layer forming in the jet-forming channel. The known methods for vibroacoustic state monitoring in equipment generating ultrajets are considered. An experiment on cryogenic cooling for focusing tubes was prepared and conducted: additional equipment was manufactured, an experimental setup was assembled on a waterjet machine’s cutting head, and cryo-cooled focusing tubes underwent simultaneous titanium blank processing while vibration sensor readings were recorded. A vibration pattern from the operation of an uncooled and cooled focusing tube was obtained. Based on the data obtained, conclusions were made regarding the cryogenic cooling modes, additional cryoprotection methods, and recommendations formulated for further research in the field of cryogenic cooling technology for waterjet processing.
EDN: LYREKC, https://elibrary/lyrekc

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