Search academic texts

Information × Registration Number 0225U002369, (0123U100584) , R & D reports Title Gas soldering of thin-sheet galvanized steel with aluminum solder popup.stage_title Розширення фізико-хімічних основ отримання якісного паяного з'єднання Head Strelenko Nataliia M., Registration Date 05-03-2025 Organization National Technscal University of Ukraine "Kiev Polytechnic Institute". popup.description1 Research of the main physico-chemical processes that determine the quality characteristics of a brazed joint made of thin-sheet galvanized steel during gas brazing with an aluminum solder system popup.description2  The modern pace of expansion of the range of soldering products, the appearance of new materials with improved characteristics leads to the necessity of optimization of the system "appiy-flux-base metal", and sometimes creation of new compositions for guaranteed reception of high-quality soldering connection. The process of obtaining a high-quality soldering connection is determined by a large number of complex, interconnected factors, phenomena on the boundary of interaction of two phases: liquid solder and solid surface of the base metal the result of which is formation of joint complexes on the basis of present components of liquid solder and base metal, growth of similar crystal structure in the process of crystallization with formation of a non-integral connection. At present, the alternative method of connection of thin-sheet galvanized steel is electroarc welding with MIG wires on the copper basis (CuSi3, CuAl8) and the use of innovative technology of controlled process of heat-treatment (CMT), which allows to significantly reduce the amount of heat necessary for reception of connections with sufficient level of mechanical and anti-corrosion properties. In its turn, the current rates of development of the majority of branches of industry and expansion of the range of products require optimization of the existing technology for connection of galvanized steel with thickness of 0,4 – 0,7 mm with layer of anticorrosive zinc coating 45-65 microns. The chemical composition, structure and, as a result, mechanical characteristics of the soldering connection are determined by the processes that flow on the interphase boundary of interaction of liquid solder and surface layers of the base metal. Product Description popup.authors Kovalenko Vladyslav L. Minakov Anton S. Minakov Serhii M. Stepanov Denys V. Chvertko Yevheniia P. popup.nrat_date 2025-03-05 Close