| 摘要 |
PURPOSE:To stabilize the quality of an amorphous metal having a specified thickness by controlling the quick cooling operation for molten metal with the detected outputs from respective sensors during the period when the supply input to a high frequency heater is kept interrupted. CONSTITUTION:The operating quantities of devices such as a gap adjuster 12, a pressure regulator 9 and a high frequency power source 13 are controlled by a control device provided with the functions of a microprocessor according to preset programs; at the same time, the input from the outside to the power source 13 which supplies electricity to a heater 2 is interrupted for a specified period at prescribed time intervals and the control programs are corrected in accordance with the detected output signals from sensors 16-21 during the period when the disturbance in magnetic field from the heater 2 is annihilated. The operating conditions of the respective devices are controlled automatically according to the corrected programs so that the thickness of the formed thin film 5 of the amorphous metal is made constant. |
