Airtight aluminum alloy casting and its manufacturing method

Details Airtight aluminum alloy casting and its manufacturing method Airtight aluminum alloy casting and its manufacturing method

1994-03-25

1995-10-31

Yee, Deborah

Metal treatment

Stock

Aluminum base

148438, 148437, 75684, C22C 2102, C22B 2100

Patent

active

054626129

ABSTRACT:
An aluminum alloy casting comprising 4.0 to 13.0% of Si, 4.5% or below of Cu, 1.5% or below of Mg, and the rest of Al in weight ratio is produced by a production method which adds a metallic hydride to a molten aluminum alloy for casting at a temperature of liquidus line or above. This method makes the shape of pores generated in the casting circular and fine, and an average crystal grain diameter to be 1/3 or below of a thickness of the casting, thereby, an aluminum alloy casting having excellent airtightness can be produced.

REFERENCES:
patent: 3816952 (1974-06-01), Niebyski et al.
Rombauer et al., Joy of Cooking, 1975, The Bobbs-Merrill Company, Inc., pp. 336-369.

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