Composite casting
The composite casting is a casting method in which a single casting from different materials is produced. The second material can be cast before or after the first material has completely solidified.
Often a first casting is completed and then a second material is cast around it using sand casting , die casting or permanent mold casting . Since shrinkage, i.e. a reduction in size, of the casting occurs during the solidification process, tensions arise in the second casting, which ensure a mechanical connection between the two castings. Mixing of the two metals to form an alloy does not usually occur, but can be achieved through targeted pretreatment, for example with salts.
See also
literature
- Ernst Brunhuber (Ed.): Giesserei Lexikon. Fachverlag Schiele & Schön, 16th edition, Berlin 1994, ISBN 3-7949-0561-X .