| 摘要 |
PURPOSE: A nozzle apparatus of a die casting extruder is provided to improve working efficiency and productivity by keeping a molten metal flowing through a nozzle hole of a uniform temperature and to maintain a pleasant working environment. CONSTITUTION: A molten metal supplied from a melting furnace flows into a nozzle hole(11) of a nozzle unit(10) while being solidified due to rapid temperature falling. The temperatures of respective portions are sensed by two temperature sensors(12) of the nozzle unit and a corresponding signal is transmitted to an electronic circuit. The electronic circuit receives the signal and supplies a high frequency current to a high frequency coil of a high frequency oscillation unit. Thereby, the nozzle unit is heated at a certain temperature and the molten metal flowing in the nozzle hole is prevented from solidifying.
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