Heat-insulated baffle for oriented freezing cast

A thermal insulation baffle and directional solidification technology, applied in the field of new high-temperature thermal insulation baffles, can solve the problems of heating zone loss, affecting the temperature gradient of the upper and lower zones, complex preparation process, etc., to achieve temperature gradient improvement, good heat insulation effect, Create a convenient effect
CN1853826AInactive Publication Date: 2006-11-01INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Publication Date
2006-11-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

A heat isolating plate for the directionally solidified casting is composed of two or more plates for splicing them together to become a single one, an external ring matched with the internal surface of temp holding furnace tightly, and an internal ring matched with the mould casing but retaining a gap (0.5-10 mm) between them for moving the mould casing easily. Said plate is just combined hard graphite felt.
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Description

technical field

[0001] The invention relates to directional solidification technology, in particular to a novel high-temperature heat insulation baffle applied to directional solidification equipment. Background technique

[0002] In the traditional directional solidification process, the alloy ingot is melted and cast into the mold preheated in the holding furnace. The mold is placed on the water-cooled crystallizer, and the mold is gradually pulled out of the holding furnace at a certain speed to form a higher casting. Temperature gradient, which is the key to the formation of metal directional crystal structure. In order to achieve the maximum temperature gradient, the key is to minimize the heat radiation loss from the hot zone of the holding furnace to the outer cold zone of the holding furnace, so that the heat is mainly conducted through the water-cooled crystallizer and through the surface of the mold outside the holding furnace to the outside of the holding furnace....

Claims

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