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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Chirkov A.M. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Vyatka machinbuilding enterprise Laser technics and technologies Ltd, Kirov The organization address: 610002, Russia, Kirov, Young Guard st., 14 Knyazeva I.A. – graduate student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Vyatka State University The organization address: 610000, Russia, Kirov, Moscovskaya st., 36 Zolotonosov Ya.D. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleTechnological features of laser welding of spring-twisted channels of heat exchangers
Abstract.The article discusses a method of making spring-twisted channels using the technology of laser welding. The advantages of laser welding to other types of welding for the manufacture of spring-twisted channel of heat exchangers are shown. They are: – Minimum molten weld pool due to the high ratio of concentration of the heat source; – Less than the values of transverse and longitudinal shrinkage due to the minimum amount of weld pool; – High-speed welding because of the process in deep penetration; – Minimum heat affected zone due to high welding speeds; – Minimum investment in heat welded construction; – The possibility of welding at atmospheric conditions. Two variants of the technological process. The rationale of two simultaneous processes: coiling spring and laser welding. Simultaneous management of two processes: the winding spring gives the desired weld quality while maintaining the geometric dimensions of the finished part in the dimensional tolerance. Technology provides high reproducibility of manufacturing quality of spring-twisted channel of heat exchangers. Shows the required control methods, the results of which judge the quality of the manufacture of spring-twisted channel heat exchangers can be judged. – Metrological control of geometrical sizes of spring-twisted channel heat exchangers, welded together by laser welding. – Metallographic examination of welds spring-twisted channel heat exchangers made by laser welding. – Fluid-testing of spring-twisted channel of heat exchangers, welded together by laser welding.
Keywords.Heat exchangers, spring-twisted channel, laser welding, technological features, technological reproducibility quality.
For citations:Chirkov A.M., Knyazeva I.A., Zolotonosov Ya.D. Technological features of laser welding of spring-twisted channels of heat exchangers // Izvestiya KGASU. 2012. №4(22) P.240-243.


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