| 摘要 |
The invention relates to a brazing metal sheet consisting of a series AA3xxx aluminum alloy core sheet, coated, on at least one surface, with a cladding layer made of a first so-called "intermediate aluminum alloy" containing 0.35 to 1.8 wt% manganese, less than 0.3 wt% of each of other elements, and a total of 1 wt% aluminum residue. Said series AA3xxx cladding layer is itself coated with a second series AA4xxx alloy cladding layer in which the alloy of the core metal sheet is selected, and the core metal sheet developed, such as to have an essentially recrystallized structure after brazing. The invention also relates to the use of such a metal sheet for manufacturing a "supercharge air cooler" heat exchanger or passenger compartment air conditioner "evaporator" heat exchanger, and to said exchangers themselves, manufactured from said metal sheets. |
