METHOD FOR CONTROLLING OUTPUT OF METAL MELTING FURNACE HIGH-FREQUENCY INDUCTION HEATING CIRCUIT FOR ARTIFICIAL DENTITIONS/DECORATIVE ARTICLES CASTING AND ITS METAL MELTING APPARATUS

摘要

PROBLEM TO BE SOLVED: To solve the problem that the increase in capacities of a heating circuit and power supply equipment at installation site is required, when the melting processing of more quantity of metal than current metal melting processing at one time is attempted.;SOLUTION: In a method for controlling the output of a metal melting furnace high-frequency induction heating circuit, a conventional phase controlled process is abandoned, and power factors are improved as a controlling process by duty factors, thereby reducing an input current/capacity of the high-frequency induction heating circuit.;COPYRIGHT: (C)2006,JPO&NCIPI