TECHNOLOGICAL PROCESSES OF WELDING HIGH PRECISION THIN-WALLED PRODUCTS FROM ALUMINUM ALLOYS USING A LASER HEATING SOURCE

The work is devoted to the development of the technological process of welding sealing of high-precision thinwalled products of the space industry from light alloys. This process includes: preparation of the product for welding by chemical etching of the welded parts with alkali, followed by neutralization with acid; assembly for welding of welded parts; basing in equipment and welding of a product with simultaneous control/management of its heating temperature; diagnostics of the level of its stress-strain state. It has been established that it is advisable to use laser welding as a welding process for sealing thinwalled high-precision products of the space industry from light alloys. An effective approach to minimizing (eliminating) such characteristic defects of laser welding as the formation of hot cracks and internal pores is the concomitant heating of the laser radiation zone. Such concomitant heating can be implemented using a hybrid laser-microplasma welding technology.