Boots – shoes – and leggings
Patent
1983-08-24
1986-03-18
Smith, Jerry
Boots, shoes, and leggings
164416, 164478, B22D 1104
Patent
active
045772770
ABSTRACT:
A method and apparatus of continuous casting with the use of a mold oscillating system adapted to oscillate a casting mold supported by a oscillating frame, the method including oscillating the mold by applying vibration at a preselected frequency higher than the natural frequency of the oscillating system; and increasing the amplitude of applied oscillation to a value in a range as determined by the ratio of a length of time of a downward movement period of the mold to a time length in which the speed of the mold exceeds the casting speed during the downward period. Preferably the preselected frequency of applied oscillation of the mold is approximately 1.5 times higher than the natural frequency of the oscillating frame.
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patent: 3664409 (1972-05-01), Kolomeitsev et al.
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patent: 4480678 (1984-11-01), Cazaux et al.
Industrial Noise and Vibration Control; J. D. Irwin and E. R. Graf; pp. 279-283; Prentice-Hall; 1979.
Fujikawa Takeshi
Harada Shinichi
Iida Shinzo
Kamei Futoshi
Katayama Yasuyuki
Kabushiki Kaisha Kobe Seiko Sho
MacDonald Allen
Smith Jerry
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