Method for manufacturing a clad sheet product

A method for the manufacturing of a clad sheet product, the method comprising:

• attaching at least two edge sections to opposite sides of a centre section to form a cladding plate, wherein the cladding plate is an integral unit,
• attaching at least one cladding plate to a first surface of a core slab to form an assembly, wherein the core slab forms a core layer of the assembly and the at least one cladding plate forms a cladding layer of the assembly and wherein the at least two edge sections of the at least one cladding plate are along edges of the cladding layer;
• and
• rolling the assembly and reducing a thickness of the assembly to a desired gauge,
• wherein a material of the core layer is a first aluminium alloy, a material of the centre section is made of a second aluminium alloy or a composite material comprising a matrix of aluminium or a third aluminium alloy, and a material of the at least two edge sections is aluminium or a fourth aluminium alloy different from the aluminium or the fourth aluminium alloy in the material of the centre section,
• wherein the material of the centre section of the at least one cladding layer (i) has a liquidus temperature lower than a solidus temperature of the first aluminum alloy of the core layer or (ii) is less noble than the first aluminum alloy of the core layer or (iii) includes flux particles, and
• wherein the at least two edge sections of the at least one cladding plate are cut off during or after the rolling.

A method for the manufacturing of a clad sheet product comprising a core layer and at least one cladding layer, the method comprising:

• preparing an assembly of a core layer and at least one cladding layer by attaching a cladding plate as an integral unit forming at least one cladding layer to a core slab forming the core layer, said cladding plate comprising more than one cladding layer and at least one of the cladding layers of the cladding plate comprising both the centre section and at least two edge sections positioned at opposite sides of the centre section along the edges of the at least one cladding layer;
• and
• rolling the assembly and reducing the thickness to a desired gauge, the core layer being made of a first aluminium alloy, the centre section of the at least one cladding layer being made of a material being a second aluminium alloy or a composite material comprising a matrix of aluminium or a third aluminium alloy, the edge sections along the edges being made of aluminium or a fourth aluminium alloy different from the material of the centre section,
• wherein the material of the centre section of the at least one cladding layer (i) has a liquidus temperature lower than a solidus temperature of the first aluminum alloy of the core layer or (ii) is less noble than the first aluminum alloy of the core layer or (iii) includes flux particles, and
• wherein the edge sections are cut off during or after the rolling.