SHEET FOR SOLDERING BY MEANS OF BRAZING SOLDER WITH SUPER-LONG LIFE PERIOD AND HIGH MOLDABILITY Russian patent published in 2007 - IPC B32B15/20 B23K35/28 

FIELD: sheet for soldering by means of brazing solder with corrosion resistance, method for making such articles.

SUBSTANCE: laminate sheet includes core made of 3xxx type alloy, gasket of aluminum alloy placed in one side of core and cladding of 4xxx type alloy for soldering by means of brazing solder placed on other side of gasket. After soldering sheet to part by means of brazing solder, continuous dense zone of Mn including dispersoids is formed in interface between core and gasket in the result of Si diffusion from cladding to core. Process for making such sheet comprises operations of producing composite including core of 3XXX alloy, cladding for soldering by means of brazing solder of 4XXX alloy and gasket of aluminum alloy placed between them; hot rolling of composite at temperature lower than 525°C for metallurgical joining of all components of composite together; cold rolling of composite till final size without subjecting it to heat treatment.

EFFECT: possibility for producing sheet suitable for any purpose having high corrosion resistance and moldability before soldering by means of brazing solder.

36 cl, 7 dwg, 7 tbl, 2 ex