| 摘要 |
PURPOSE: A vacuum chamber and a centrifugal casting apparatus are provided to perform high frequency vacuum melting and vacuum casting simultaneously and continuously by high frequency vacuum melting a high melting point active metal and precision casting high melting point active metal to form a certain cast article. CONSTITUTION: The vacuum chamber and centrifugal casting apparatus for vacuum precision casting high melting point active metal comprise a water cooling type double wall body structured main body means(100) in the middle part of which a separating heat sink(107) is installed so that vacuum chambers are separately installed in upper and lower parts of the separating heat sink, and in which a heat emission preventing plate(110) is installed in the upper part of an upper vacuum chamber(108), wherein an injection port is formed at one side of the separating heat sink in such a way that the injection port is opened or closed by sliding shutter(105); a high frequency melting ladle(200) installed so that it is tilted to the injection port side of the separating heat sink installed in the lower part of the upper vacuum chamber; a lowerable and liftable transfer sealing means(300) that is ascendingly and descendingly installed in the lower part of a lower vacuum chamber(109) of the main body means to seal the lower part of the lower vacuum chamber; radiating rotational die means(304) rotationally installed on the upper part of the lowerable and liftable transfer sealing means; and centrifugal casting heat reserving furnace means(307) a plural of which are concentrically arranged on the radiating rotational die means with being spaced apart from each other in an equal distance.
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