High temperature alloy pipe sectional material continuous casting crystallizer and demoulding method thereof

Abstract

The invention discloses a high temperature alloy pipe sectional material continuous casting crystallizer and a demoulding method thereof. Assembly impact force is buffered through graphite; erosion on a graphite buffer layer by high temperature alloy melt can be prevented through a corundum inner sleeve; high temperature alloy melt is guided into the crystallizer from the bottom of the crystallizer and solidifies, and then a finished sectional material is pulled out from the upper part of the crystallizer; an ultrasonic small amplitude vibration method is adopted for demoulding, and the hollow high temperature alloy pipe sectional material can be continuously cast; a high temperature alloy pipe casing can be smoothly separated from a lining of the crystallizer in the continuous casting process; the tight fit heat conductivity of the layers is excellent, the manufacturing cost is low, the assembly process is simple, and the mounting and the use are convenient, safe and reliable.

Description

technical field [0001] The invention relates to a mold for continuous casting of high-temperature alloy pipe profiles and a demoulding method thereof, which are applied to continuous casting of high-temperature alloy pipe profiles. Background technique [0002] In the prior art, high-temperature casting materials are generally directly cast and formed by centrifugal method. Due to the different specific gravity of each element of the high-temperature alloy material, the distribution of the material after forming is uneven, which affects the size and performance of the casting molding. In special occasions, the length of the high-temperature casting alloy pipe profile needs to be Tens of meters long, it can only be welded and assembled by segmental casting, the weld seam needs to be processed, the process is cumbersome, and the strength, performance and service life of the welded profile are affected. [0003] The published publication number is 103706773A for a hollow cast i...

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Problems solved by technology

[0002] In the prior art, high-temperature casting materials are generally directly cast and formed by centrifugal method. Due to the different specific gravity of each element of the high-temperature alloy material, the distribution of the material after forming is uneven, which affects the size and performance of the casting molding. In special occasions, the length of the high-temperature casting alloy pipe profile needs to be Tens of meters, can only be welded and assembled after segmental casting, the weld seam needs to be processed, the process is cumbersome, and the strength, performance and service life of the welded profile are affected

[0003] The published publication number is 103706773A for a hollow cast iron pipe and its vertical continuous casting method and special equipment. There is no induction device for casting superalloy pipe continuous casting equipment outside the furnace, and there is no requirement for the size of the furnace at the inlet end of the alloy melt. , the molten iron inlet end of the holding furnace is open, the molten iron is exposed, and the casting temperature of the superalloy is as high as 1600˚C. Compared with the casting temperature of cast iron at 1300˚C, the heat dissipation quickly leads to a sharp deterioration in the fluidity of the melt, and the heat conduction of the superalloy The rate is also worse than that of cast iron, which is not conducive to melt casting; the mold inner sleeve material is graphite, which is very stable when applied to cast iron with high carbon content, but will dissolve and corrode when applied to high-temperature alloys with low carbon content Graphite crystallizer, and superalloy pipes and mold linings are prone to sticking and cannot be demolded, so this type of equipment can only be used for cast iron continuous casting production, it is difficult to meet the needs of high temperature alloy continuous casting, and cannot be applied to high temperature alloy pipe continuous casting casting

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