Kovalenko Volodymyr S.

Enhancement of laser processing results(alloying, cladding, rapid prototyping) by controlled characteristics of gas-powder stream

Experimental investigations of the influence of gas-powder mixture supply nozzles configuration on the efficiency of gas-powder laser cladding were conducted.
Nozzle designs that guarantee maximum efficiency and quality of laser cladding were

Surface topography modification by controllable laser irradiation

Обробка зразків на макеті устаткування

Main goal in the development of technological process and the design of experimental equipment for its realization was to improve the exploitation properties of parts. It is possible to pattern required micro-relief on flexible thin-walled workpieces and, with help of additional ultra-sonic processing, on rigid bulk parts. Данная технология позволяет создавать требуемый микрорельеф на не жестких тонкостенных деталях или его формирование (для жестких деталей) с помощью дополнительной выглаживающей УЗ-обработки

Research and development of the technology of medical stents manufacturing by means of laser milling

Лазерне фрезерування стента

We established that at laser stent manufacturing by means of direct laser milling technology there is a possibility to create “pockets” in the stent’s walls with given depth, shape and size. These pockets are used for drug deposition and could not be formed using ordinary laser cutting techniques. Moreover, it is also possible to wary the stent’s filament thickness (up to 20 mkm) thus increasing the flexibility and elasticity when filament’s width increases (from 0.5 to 1 mm).

Research and development of the technology of laser cutting of medical implants (stents).

Лазерне вирізання медичного ендопротеза (стента)

There was developed a highly efficient technology of medical stents' manufacturing  by means of focused laser beam.

 The developed technology lets us to cut stents  from tube workpieces (material – stainless steel, nitinol etc.) with any complexity of the stent's pattern. In order to implement the developed technology a trial version of industrial laser system that consists of Q-switched YAG laser, beam delivery and focusing system, assyst gas delivery system, monitor and control system and workpiece movement and protection system was developed.