Casting device of low tension fine grain and method thereof

A fine-grained, low-pressure technology, applied in the field of foundry metallurgy, can solve the problems that large-scale casting methods are not suitable and cannot be used in pressure-regulated casting methods, etc. Effect
CN102398014AInactive Publication Date: 2012-04-04SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2012-04-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a low tension fine grain casting device and a method thereof. The device comprises an upper chamber, a lower chamber, a top cover, a casting mold, a melt device, a liquid lift tube, a refiner memorizer, an air pressure regulating device, a pressure bearing plate. The refiner memorizer is placed between the liquid lift tube and the casting mold gate, and the liquid lift tube is fixed on the pressure bearing plate; the casting mold is placed in the upper chamber within the furnace, the periphery being filled with fine grains; the melt device is placed underneath the liquid lift tube, being concentric with the liquid lift tube; the air regulating device is circumscribed with a vacuum pump, a pressure tank and a connection valve by the flange plates in the upper chamber and the lower chamber so as to regulate the air pressure in the upper chamber and the lower chamber. The invention is reasonable in structure, advanced in technology and easy to operate. By arranging the refiner memorizer between the liquid lift tube and the casting mold gate, and utilizing the melt and flow of metal liquid, the refiner is carried into the casing mold, and meanwhile, the melt temperature while being carried into the casting mold is reasonably lowered so as to achieve the purposes of grain refining and shrinking looseness reduction.
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Description

technical field

[0001] The present invention relates to a device and method in the technical field of foundry metallurgy, in particular to a device and method that increases nucleation cores by increasing homogeneous particles or heterogeneous particles, and utilizes adjustable pressure-regulating casting during the casting process. characteristics, control its process parameters, adjust the amount of refiner entering the melt, and control the device and method of refinement process. Background technique

[0002] Adding a refiner to refine the solidified structure of the alloy is a process that has been widely industrialized. During smelting, crystal nuclei can be formed by adding a refiner to the melt, so that the coarse as-cast structure becomes fine equiaxed grains to achieve grain refinement, thereby improving the casting performance, physical properties, and mechanical properties of the alloy and processing performance. There are three main types of refiners: alloy fi...

Claims

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