METAL OXIDIZATION PREVENTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a high quality non-oxidized metal by making reducing atmosphere by providing free electrons, and easily preventing binding with oxygen. SOLUTION: This metal oxidization preventing device 21 is provided with an electronic melting furnace 22 and a high voltage direct current power source 23, and a positive electrode bar 25 and a negative electrode bar 26 are provided inside a chamber 24 of the melting furnace 22. The positive electrode bar 25 is connected to the positive electrode 27 side of the direct current power source 23, and the negative electrode bar 26 is connected to the negative electrode 28 side of the direct current power source 23. The negative electrode bar 26 of the direct current power source 23 is made contact with melt aluminum 35 inside a crucible 36. The positive electrode bar 25 is arranged so as to have an interval to the melt aluminum and it is arranged between both the electrodes so as not to contact with surface of molten metal 35 and voltage of 1000V or higher is applied thereon. COPYRIGHT: (C)2004,JPO