This article describes the combined method of plasma-electrolyte processing and subsequent ultrasound imaging of medical needles created from steel grade 12H18N9T. A functional diagram of an installation for medical needles plasma-electrolyte treatment is presented. A device for ultrasound diagnostics of microrelief in the obtained material is described. The actual task of ultrasound medical research is the quality of the processed tip. One of the ways to obtain deformation at the end of the needle is the electrolyte-plasma discharge method at the anode of a given material. In the course of the study, previously obtained results were confirmed, indicating that the plasma electrolyte process was caused by a fivefold or more excess of the cathode area relative to the anode area Sк≥5Sа. A study was conducted of plasma-electrolytic processing of steel grade 12H18N9T using anodic electrolyte. It is shown that in the plasma formation area occurrence around the anode, the current-voltage characteristic is practically independent of the electrolyte concentration. The patterns of formation of the depth of the hole at the end of the needle, determined by the process of melting the surface layer of the anode, which requires a uniform input of heat over a unit of time. The depth of the well and the wavelength of ultrasound are shown. It is necessary to apply roughness (holes) with a size of 10-1000 microns at different angles relative to the axis of the tube with a tip. On the research basis, a unique device «KLYON-1» was created, which performs the material processing and its control by means of ultrasonic radiation.
Keywords: ultrasound, plasma, electrolyte, visualization, microrelief, needle, well