Joining esp. aluminium@ to steel

摘要

Joining of different metals, esp. aluminium to high grade steel, is carried out by: (a) inserting aluminium sheets (1, 3) and a high grade steel body (2) in the cold condition into a tool space (4); (b) effecting heat transfer in conventional manner under the action of pressure; and (c) after additional heating to just below the aluminium melting point via heated upper and lower tools (5, 6), compressing the sheets (1, 3) and body (2) to form a sandwich packet.