Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1984-07-30
1986-07-08
Lin, Kuang Y.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164150, 164 571, B22D 2700, B22D 4600
Patent
active
045987548
ABSTRACT:
A method is disclosed for controlling the metallurgical structure of cast metals containing nonmetallic second phase structures. The method comprises (1) prior to making casting of the metal, determining a mathematical value associated with the rate of temperature change at liquidus recalescence and a value associated with the rate of temperature change at the eutectic arrest of a measured cooling curve for a sample of the metal melt; (2) comparing the determined values obtained with previously gathered values of the same type that have been correlated to known metallurgical structures; and (3) if the determined values are different than previously gathered values for a desired structure, add modifying and/or refining agents to promote a metallurgical structure change in the melt.
REFERENCES:
patent: 4333512 (1982-06-01), Sugiura et al.
"A Method of Thermal Analysis of Aluminum Alloys Prior to Casting", Sals brochure of Societe De Vente De L'Aluminum Pechiney, 1982.
Cole Gerald S.
Nowicki Roman M.
Yen Chia-Ming
Ford Motor Company
Lin Kuang Y.
Malleck Joseph W.
May Roger L.
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