| 摘要 |
The invention concerns a sandwich-type metal sheet ( 2 ), adapted to a forming and welding operation, and exhibiting excellent resistance at high temperatures, comprising two metal sheet facings ( 1, 1 ') having a melting point Tp, and a metallic core ( 4 ) having a melting point Ta, Ta capable of being equal to or different from Tp, whereby the core ( 4 ) has a density lower than the density of each of the facings ( 1, 1 '), and the core ( 4 ) and each of the facings ( 1, 1 ') are mutually bound by means of a metallic binding agent ( 3, 3 ') having a melting point Tm lower than Ta and Tp. The invention also concerns a method for making said sandwich-type metal sheet ( 2 ), and its use in the automotive industry. |
