Title:
METHOD FOR CONTROLLING VIBRATION OF ULTRASONIC VIBRATING MOLD FOR CONTINUOUS CASTING OF METAL
Document Type and Number:
Japanese Patent JPH01122645
Kind Code:
A
Abstract:
PURPOSE:To prevent seizure of molten metal in a mold to the inner wall of the mold by controlling amplitude of each vibrator to the fixed value at the time of vibrating the mold for continuous casting with plural ultrasonic vibrators. CONSTITUTION:Plural vibrators 1-1-1-6 are fitted to the mold 3 for continuous casting composing of four pieces of steel plate, etc., and it is prevented by vibrating the mold 3 with the ultrasonic generators 2-1-2-6 that the continuous casting can not be executed caused by seizure of the molten steel 4 in the mold 3 to the inner wall of the mold 3. In this case, the frequency of vibration is set by a frequency generator 21 and the power of vibration is set by a power setting comparator 22 and the power is applied to the vibrator by power setting signal from an output matching inverter 23 through an output transformer 24 and an impedance matching coil 25. On the other hand, the primary current of the output transformer 24 is detected by a shunt 27 and the voltage is detected by a potentiometer 30 and both are amplified by amplifiers 28, 31, respectively and inputted to a power control circuit 26 through control circuits 29, 32 to control the amplitude to the fixed value and the seizure of the molten steel to the inner wall of the mold is prevented.
Inventors:
YUI KATSUHIKO
HIRATSUKA RYUICHI
KATO YUICHI
NAKAMURA TETSUO
WAKAO MASAMITSU
SAWADA KENZO
UEHARA MASAJI
HIRATSUKA RYUICHI
KATO YUICHI
NAKAMURA TETSUO
WAKAO MASAMITSU
SAWADA KENZO
UEHARA MASAJI
Application Number:
JP27819487A
Publication Date:
May 15, 1989
Filing Date:
November 05, 1987
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B22D11/04; B22D11/053; B22D11/16; (IPC1-7): B22D11/16
Attorney, Agent or Firm:
Yuji Miura