Method of treating cast aluminum metal to lower the recrystalliz

Details Method of treating cast aluminum metal to lower the recrystalliz Method of treating cast aluminum metal to lower the recrystalliz

1975-02-03

1976-12-28

Satterfield, Walter R.

Metal treatment

Compositions

Heat treating

29193, 75138, 148 115A, 148 127R, 148159, 164 76, B22D 2500, C21D 104

Patent

active

040000087

ABSTRACT:
A method of treating metal stock to lower the recrystallization temperature thereof comprising casting the metal into a continuous bar in a moving mold formed by a groove in the periphery of a casting wheel and an endless belt lying adjacent the groove along a portion of the periphery of the wheel, hot-working the bar substantially immediately after casting while the bar is in substantially that condition as cast by rolling the bar in closed roll passes to obtain a continuous metal rod, and allowing the rod to cool from the elevated rolling temperature to about 400.degree. F in a minimum of 30 seconds and from about 400.degree. F to ambient temperature at a maximum cooling rate of 300.degree. F per minute. A metal rod processed in this fashion has a lower recrystallization temperature than one which is quenched or quickly cooled after rolling.

REFERENCES:
patent: 3078191 (1963-02-01), Maeda
patent: 3234054 (1966-02-01), Sperry
patent: 3647565 (1972-03-01), Schoerner
patent: 3674569 (1972-07-01), Pryor et al.
patent: 3807969 (1974-04-01), Schoerner et al.
patent: 3827917 (1974-08-01), Zeigler et al.
patent: 3830635 (1974-08-01), Chia et al.
Sachs, G. et al; Practical Metallurgy, Cleveland (ASM), 1951, pp. 123-129.
Harrington, R; Effect of Single . . . Metals on Recrystallization . . . of Pure Aluminum, in Trans. ASM, 41, 1949, pp. 443-459.

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