Heating structure of electromagnetic fixed-point target area of ​​tundish tank

A heating structure, electromagnetic induction heating technology, applied in metal processing equipment, casting melt containers, casting equipment, etc., can solve the problems of electrode consumption on molten steel, difficult to maintain plasma arc, large internal cracks, etc. Inclusion floating, inclusion reduction, easy local temperature effect
CN104827018BActive Publication Date: 2018-07-06WUHAN XISAI METALLURGICAL ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN XISAI METALLURGICAL ENG CO LTD
Publication Date
2018-07-06

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Abstract

The invention discloses an electromagnetic fixed-point target area heating structure for a tundish tank, which solves the problems of low nozzle life, unreasonable molten steel heating area, high operating cost, easy leakage, steel overflow and other accidents existing in the existing tundish electromagnetic heating . The technical solution includes the bottom of the tundish which is composed of the working layer, the permanent layer and the bottom plate of the tundish, and the nozzle arranged at the bottom of the tundish, the outer periphery of the nozzle is provided with an annular movable seat brick above the bottom plate of the tundish, and the movable seat An annular electromagnetic induction heating device is embedded in the lower section of the brick, and the inner ring of the electromagnetic induction heating device is provided with an inner screen ring. The invention has the advantages of extremely simple structure, good control performance, convenient installation and maintenance, uniform heating of molten steel, effectively realizing constant temperature casting with low superheat, high safety and reliability, and effectively avoiding nozzle damage.
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Description

technical field

[0001] The invention relates to the field of molten steel smelting, in particular to an electromagnetic fixed-point target zone heating structure for a tundish. Background technique

[0002] The as-cast solidification structure of the continuous casting slab usually consists of three regions, that is, the edge is a fine equiaxed chilled grain area, the adjacent columnar grain area (perpendicular to the surface of the slab and growing towards the center), and the center is equiaxed. crystal area. Generally speaking, the equiaxed crystal has a dense structure and good processing performance, while the columnar crystal has obvious directionality and poor processing performance, which is easy to cause defects such as center segregation, center looseness and center cracks. Therefore, in continuous casting slab solidification During the process, the development of columnar crystal regions should be suppressed as much as possible, and the expansion of equiaxed crys...

Claims

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