Method for the inductive heating of a refractory mold part as well as corresponding mold part for such
AssigneeDidier-Werke AG
InventorsRaimund Bruckner, Rudiger Grau, Daniel Grimm, Seyed Masoud Hashemi, Karl-Heinz Spitzer
Life of this patent
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Abstract
A refractory guide member and a method for heating the refractory guide member by use of an inductor, where at least one collateral electromagnetic field located in a region spaced apart from the inductor is generated by the inductor. The mold part is made of an electrically conductive layer with several insulating interrupting slots for the controlled deflection of eddy currents from a main field generated by the inductor into a region spaced apart from the inductor.
Claims30
A method of inductively heating an electrically conductive guide member employed to directly contact and guide molten metal, said method comprising:
- employing an inductor to generate a main field in a first region of the electrically conductive guide member, thereby inductively heating the first region and producing eddy currents;
- and
- diverting at least a part of the eddy currents from the first region of the electrically conductive guide member to a second region thereof, that is not acted upon by the main field, by electrically non-conductive interruptions in the electrically conductive guide member including at least one electrically non-conductive interruption positioned between the first region and the second region, thereby inductively heating the second region.
An electrically conductive guide member that is to be inductively heated while being employed to guide molten metal, said electrically conductive guide member comprising:
- a first region to be inductively heated by the generation therein of a main field by an inductor;
- a second region not to be acted upon by the main field;
- electrically non-conductive interruptions located in said electrically conductive guide member including at least one electrically non-conductive interruption positioned between said first region and said second region to divert at least a part of eddy currents produced by the main field from said first region to said second region and thereby to inductively heat said second region;
- said electrically conductive guide member has an inner surface with an electrically insulating surface formed thereon;
- and said electrically non-conductive interruptions are comprised of at least two electrically insulating transverse slots formed in said electrically conductive guide member which extend over nearly an entire circumference of said electrically conductive guide member, and at least one electrically insulating longitudinal slot connecting said at least two electrically insulating transverse slots.
An electrically conductive guide member that is to be inductively heated while being employed to guide molten metal, said electrically conductive guide member comprising:
- a first region to be inductively heated by the generation therein of a main field by an inductor;
- a second region not to be acted upon by the main field;
- electrically non-conductive interruptions located in said electrically conductive guide member including at least one electrically non-conductive interruption positioned between said first region and said second region to divert at least a part of eddy currents produced by the main filed from said first region to said second region and thereby to inductively heat said second region;
- said electrically conductive guide member is a limiter plate to be used with a molten metal continuous casting device;
- said electrically conductive guide member has an inner surface with an electrically insulating surface formed thereon;
- and
- said electrically non-conductive interruptions are comprised of at least two electrically insulating transverse slots formed in said electrically conductive guide member which extend across a width of said electrically conductive guide member, and at least one electrically insulating longitudinal slot.
An assembly, comprising:
- a electrically conductive guide member to be employed to directly contact and guide molten metal, said electrically conductive guide member including a first region, a second region and electrically non-conductive interruptions including at least one electrically non-conductive interruption positioned between said first region and said second region;
- an inductor positioned to generate a main field acting on said first region, thereby to inductively heat said first region and to produce eddy currents, and not acting on said second region;
- and
- wherein said electrically non-conductive interruptions are located to divert at least a part of the eddy currents from said first region to said second region, thereby to inductively heat said second region.
Dependencies are inferred from the claim text.