Method of casting aluminum base alloy sheet and product

Details Method of casting aluminum base alloy sheet and product Method of casting aluminum base alloy sheet and product

1976-12-30

1978-06-06

Dean, R.

Metal treatment

Compositions

Heat treating

75141, 75142, 148 2, 148 115A, 164 88, C22C 2116, B22D 1106, B22D 2104

Patent

active

040934756

ABSTRACT:
In continuous casting of aluminum base alloy in sheet form where the alloy comprises small but effective amounts of silicon, iron, manganese, magnesium and copper, an objectionable amount of edge cracking has occurred in the product. This has necessitated side trimming the sheet with the resultant cost of the edge shearing operation and wasted energy in melting the scrap. Applicants have discovered that by increasing the iron and manganese contents of the alloy and decreasing the silicon and magnesium contents, edge cracking can be eliminated or reduced to the point where edge shearing can be eliminated or significantly reduced.

REFERENCES:
patent: 3219492 (1965-11-01), Anderson et al.
patent: 3930895 (1976-01-01), Moser et al.

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