METHOD OF DIFFUSION WELDING OF ALUMINIUM ALLOYS THROUGH AND INTERMEDIATE INTERLAYER Russian patent published in 1995 - IPC

FIELD: welding. SUBSTANCE: low-melting glass on the base of oxides is used as intermediate interlayer during the diffusion welding of aluminium alloys. An intermediate interlayer made of low-melting glass is used during the welding of aluminium alloys. Besides the stated ones, the glass includes four components in the form of oxides in a definite relationship. EFFECT: enhanced strength and air-tightness of channels of the matrix heat-exchanger made of aluminium alloy plates, improved method of heat-exchanger production. 2 tbl