Apparatus for melting metal by electron beams and process for producing high-melting metal ingot using this apparatus
First Claim
1. An electron-beam furnace for melting refractory metal, comprising:
- a feeder unit for raw materials;
a melting unit for raw materials which is connected to the feeder unit for raw materials and which is constructed of a furnace wall and a ceiling wall; and
an outlet nozzle unit of exhaust gas that is connected to the melting unit for raw materials,the melting unit for raw materials further comprising at least a hearth, a water-cooled mold, and an electron beam gun,wherein titanium or stainless steel is lined on at least one of the furnace wall and the ceiling wall, and wherein plural fin-shaped members made of titanium or stainless steel are disposed at the ceiling wall.
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Accused Products
Abstract
The present invention provides an electron-beam furnace and a melting method that, in producing an ingot by melting a metal with an electron beam, can suppress the contamination of new impurities in the ingot production, are less likely to again result in inclusion of once evaporated impurities from a molten metal pool within a hearth or a mold, and can be improved in utilization rate. The electron-beam furnace for melting a refractory metal includes a feeder unit for raw materials, a melting unit for raw materials, which is connected to the feeder unit for raw materials and, at the same time, is defined by a furnace wall and a ceiling wall, and includes at least a hearth, a water-cooled mold, and an electron gun, and an evacuation unit for exhaust gas connected to the melting unit for raw materials. In this electron beam furnace, at least one of the furnace wall and the ceiling wall is lined with titanium or stainless steel, and in addition, plural fin-shaped members formed of titanium or stainless steel are provided at the ceiling wall. A lining, which can be attached and detached, is provided on the inner face of the electron beam furnace.
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Citations
14 Claims
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1. An electron-beam furnace for melting refractory metal, comprising:
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a feeder unit for raw materials; a melting unit for raw materials which is connected to the feeder unit for raw materials and which is constructed of a furnace wall and a ceiling wall; and an outlet nozzle unit of exhaust gas that is connected to the melting unit for raw materials, the melting unit for raw materials further comprising at least a hearth, a water-cooled mold, and an electron beam gun, wherein titanium or stainless steel is lined on at least one of the furnace wall and the ceiling wall, and wherein plural fin-shaped members made of titanium or stainless steel are disposed at the ceiling wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification