LASER PROCESSING SYSTEM (LPS) FOR METALS AND ALLOY MATERIALS WELDING
Description
Laser processing system for metals and alloy materials welding based on an impulse solid-state laser on yttrium aluminum garnet with the variable form, spatial-output and timing performance of impulses of both radiation generation and optical systems for formation of laser beam with the task geometry (cylindrical form, elliptic and ring cross — sections) has been developed.
LPS includes both systems for producing laser beams with circular-, elliptic- and ring cross — sections with a variable diameter and the ring width, and а fibre optical attachment for laser radiation transmission into a metals processing zone.
Purpose
The system has been designed for laser welding of high-strength alloy steels, aluminum and aluminum alloys, titan and titan alloys and for the development of components surface restoration technologies with the impulse laser welding method, which makes it possible to get metal coverings with the set-up physical-mechanical features on the surfaces of the articles manufactured of these metals.
The system structure: radiator post; power frame, power frame and LPS control rack; optical-mechanical block; coordinate table, a computer; an arrangement for processed articles rotation.
Technical features:
| Laser medium …YAG Nd+3; Radiation wave length, μm … 0,64; Set-up form and impulse duration, ms … (0,25 — 20); Maximal impulse exit energy, J … 50; Maximal exit power, W … 400; Radiation impulse repetition frequency, not more, HZ … 200; Variable diameter of a focused spot in a processed zone, mm … (0,25 — 3); Beam divergence under maximal average power, not more, mrad … 20; Impulses stability, % … ±3. |
| Laser cooling system is water double-circuit: inner circuit is filled with distilled water for radiator cooling. |
| Outer cooling circuit flow, l/min … 15; Water inlet temperature, not more, °C … 20; System supply: − voltage, V … 380/220; − frequency, Hz … 50/60; − power, kW … 14. |
Advantages: Republic of Belarus patent has been implemented at Belarusian enterprises.
VICTOR MYSHKOVETS,
HEAD OF THE RESEARCH AND DEVELOPMENT LABORATORY
«LASER TECHNOLOGIES OF MATERIALS PROCESSING»,
СANDIDATE OF PHYSICS AND MATHEMATICS, DOCENT
tel. (+375 232) 50 38 22, fax (+375 232) 51 00 77,
e-mail: Myshkovets@gsu.by,
http://nis.gsu.by