Heating – Heating or heat retaining work chamber structure – Including baffle wall – work shield – or work support element
Patent
1985-03-01
1986-08-05
Yuen, Henry C.
Heating
Heating or heat retaining work chamber structure
Including baffle wall, work shield, or work support element
432234, 432235, F23D 2300, F27B 914
Patent
active
046040560
ABSTRACT:
The present hearth is composed of a plurality of support bars, which are made of graphite in the preferred embodiment, and which are arranged to be parallel to the length of the hot zone chamber and orthogonal to the mouth of the vacuum furnace. Each of the support bars has a groove, or a channel, formed in its upper surface and disposed in each of said channels is one or more rotatable molybdenum load support rods each of which has been impregnated, or coated, with titanium nitride. To the underside of each support bar there are secured molybdenum bar support rods which are located and secured to hold the support bars away from coming in contact with the heating elements of the hot zone.
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Cleaver William E.
Yuen Henry C.
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