FIELD: mechanical engineering. SUBSTANCE: cellular element consists of at least partially structurized metal sheets turned into roll, assembled into pack or twisted. Gas permeable soldering foil is applied at least to one end face of cellular element, and soldering is carried out to connect layers. Cellular element and foil can be fitted into tubular casing for soldering. Porous foil or foamed foil can be used in process. Foil can be made of nickel-based material and it can contain fluxing additions. EFFECT: provision of high-quality soldered joint at simplified of process. 19 cl, 6 dwg
