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AssigneesCeles, Usinor
InventorsMarc Anderhuber, Jean-Philippe Chaignot, Claude Couffet, Jean Hellegouarc'h, Philippe Roehr, Rene Pierret, Patrick Hug, Jean-Camille Uring, Gerard Griffay, Alain Daubigny
Estimating the term…
Gastight and vacuum-tight chamber intended to be used in a device for heating a product advancing inside the said chamber by electromagnetic induction, characterized in that it comprises a sheath made of an electrically insulating, gastight and vacuum-tight material, the inner faces of the said sheath being protected by a heat shield consisting of a matrix of tiles made of a thermally insulating material and of a plurality of tubes cooled by the flow of a fluid, the latter being trapped in the said matrix of tiles.
Gastight and vacuum-tight chamber intended to be used in a device for heating a product advancing inside the said chamber by electromagnetic induction, comprising a sheath made of an electrically insulating, gastight and vacuum-tight material, the inner faces of the said sheath being protected by a heat shield consisting of a matrix of tiles made of a thermally insulating material and of a plurality of tubes cooled by the flow of a fluid, the latter being trapped in the said matrix of tiles.
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Crucible furnaces: using vacuum or particular gas atmosphere
Continuous furnaces for strip or wire: with a controlled atmosphere or vacuum
Continuous furnaces for strip or wire: with induction heating
Furnaces through which the charge is moved mechanically, e.g. of tunnel type ; Similar furnaces in which the charge moves by gravity: adapted for…
Term end not estimated
The present invention relates to heating a metal product advancing continuously in a protective atmosphere or in a vacuum, by electromagnetic induction.
The use of electromagnetic induction heating devices for heat treatment in a protective atmosphere as implemented in hot coating lines (for galvanizing, aluminizing, etc.) or continuous heat treatment lines (for example annealing lines) has been known for a long time.
Generally, two types of induction heating devices are used for these plants, namely one with a longitudinal flux (the inductor consists of several turns through which current passes and which surround the advancing product so as to create a magnetic flux in the direction of advance of the product) and one with a transverse flux (the turns of the inductor are placed in a plane parallel to the surface of the product such that the magnetic flux is perpendicular to this surface).
Other characteristics and advantages of the present invention will emerge from the description given below with reference to the appended drawings which illustrate an embodiment thereof which is devoid of any limiting character. In the figures:
FIG. 1 is a view in cross section of the chamber according to the invention;
FIG. 2 is a partial enlarged view of a detail of FIG. 1;
As shown in FIGS. 1 to 4, the electrically insulating gastight and vacuum-tight chamber according to the invention is in the form of an elongated sheath 1 coupled to a heat shield 2.
The space 3 defined inside the said sheath is shaped according to the shape of the product to be treated. For example, the parallelepipedal shaped sheath illustrated in FIGS. 1 to 4 typically represents an application of this device to a strip to be treated.
Of course, this type of chamber can also be applied to any other product, whether or not it is advancing (wire made of steel, copper, aluminium, etc.).