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Heat Accumulators

Induction-heated-casting-channel-with-graphite-sleeve

Cartridge heater having resilient retaining means

Referring now to the drawing, FIG. 1 illustrates a fragmentary portion of a plastic molding ...

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OF THE INVENTION Referring now more specifically to FIG. 1 of the drawings, the numeral 10 ...

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What is claimed is: 1. An elongated extruded solar panel comprising: a relatively flat member of ...

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OF THE INVENTION Water heater 10 is of conventional construction and does not per se form a part ...

Induction heated casting channel with graphite sleeve

Details

Inventors: Pamart, Joel;
Assignee: Pont-A-Mousson S.A. (Nancy, FR)
Primary Examiner: Rutledge; L. Dewayne
Assistant Examiner: McDowell; Robert L.
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas

A fusing furnace casting channel 13 is surrounded by an induction heating coil 17 embedded in a refractory lining 12. A graphite sleeve 20 having a refractory inner coating 16 defines the casting channel. The sleeve serves as a permanent, single turn secondary winding such that the channel may be preheated even when no molten metal is present in the channel, which would ordinarily act as the secondary winding or core. This enables the casting channel to be maintained at a high temperature between successive casting operations.

DETAILED DESCRIPTION This invention resolves the problem by providing, surrounding the casting bed of the channel and coaxially therewith, a graphite susceptor sleeve which is traversed by an induced or secondary heating current when the primary induction coil is energized.
With this arrangement the casting channel is induction heated even when no liquid metal alloy is present inside of the channel, so that the channel can be preheated before the first casting as well as between two successive castings at a temperature which ensures the continued fluidity of the metal alloy when it is introduced inside the channel.

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