Method and devices for induction heating during the passage of a metallurgical product of elongated shape
AssigneeRotelec
InventorsMarc Buffenoir, Philippe Georges, Rene Pierret
Life of this patent
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Abstract
The product (11) is in relative motion in the direction (12) of its axis with respect to at least one magnetic inductor (10, 10'). The metallurgical product (11) is subjected to at least two magnetic fluxes (19, 19') having non-parallel directions which are transverse with respect to the longitudinal direction of the product (11). The heating device may advantageously consist of two C-shaped magnetic yokes (14, 14') spaced apart and angularly offset along the axial direction (12) of advance of the product (11).
Claims10
Method for induction heating of an elongated metallurgical product with an axis of symmetry;
- which comprises:
- advancing the product in the direction of the longitudinal axis thereof with respect to at least one magnetic inductor fitted with windings;
- subjecting the product to at least two magnetic fluxes about the axis of symmetry of the product having non-parallel directions, which are transverse with respect to the longitudinal axis of the product, the fluxes circulating between at least three poles of the inductor wherein said poles are equi-angularly distributed around the axis of the symmetry of the product.
Device for induction heating during the passage of an elongated metallurgical product with an axis of symmetry in the direction of the longitudinal axis with respect to at least one magnetic inductor which comprises:
- a magnetic inductor having at least one magnetic yoke and including at least three poles fitted with windings equi-angularly distributed around the axis of symmetry of the product so as to form, around the product when in motion in the direction of the longitudinal axis, at least two air gaps;
- and
- a plurality of windings which are provided at each of said poles wherein two magnetic fluxes are circulated which are transverse with respect to the longitudinal axis of the product and are not parallel to each other, by the windings.
Dependencies are inferred from the claim text.