Method for producing polyporous material based on solid/gas eutectic directional solidification

A porous material, directional solidification technology, used in manufacturing tools, casting equipment, metal processing equipment, etc., can solve the problem of unable to obtain the variable cross-section pore diameter of the same axial direction, monitor the production process of porous materials, and unable to obtain porous materials. The effect of shortening the process time, widening the range of material selection, and uniform porosity

Active Publication Date: 2008-05-07
大连华乌科技转化有限公司
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AI Technical Summary

Problems solved by technology

[0008] The maximum heating temperature can only reach 1650-1700°C, and the temperature inside the melt is uneven;
[0009] The entire production process of porous materials from melting to casting cannot be monitored visually;
[0010] It is impossible to obtain

Method used

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  • Method for producing polyporous material based on solid/gas eutectic directional solidification

Examples

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Embodiment Construction

[0027] Add a certain quality of material into the melting crucible (1), make it heated and finally melted in the induction field of the electric induction heater (3), and detect the melting process and temperature in the furnace through the observation window (4) on the furnace shell Variety. After blowing saturated gas into the melt (7), the furnace body is inclined at 90°, and the melt is evenly layered and poured into the mold (5) of the crystallizer (2), and the refractory layer (6) of the furnace is in contact with the melt The time is shorter. The porous material (8) is crystallized by means of directional heat pipes on the mold. The crystallizer assembly can be easily disassembled and replaced, and can quickly change the shape, pore size, and direction of porous material castings.

[0028] The method of pressurized cooling to prepare porous materials is: melt the material to be prepared under the gas pressure of 0.005 ~ 10MPa, then pour the liquid material into the mo...

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PUM

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Abstract

The invention relates to a method for preparing porosint by solid/gas directional eutectic freezing. The equipment and craft adopted the invention can increase the speed of melting by two to ten times as rapid as the speed of the prior art and monitor the total processes of metal melting and casting by increasing the working pressure, accelerating and control the cooling speed and reducing the nonmetal impurity content. The made porosint has an advantages of even pore space (both radial direction and axial direction of the casting piece). The pore space inside the material can be equal or unequal in size, and also can be subuliform pore space with changeable section. The invention can be used in fluid permeation, filter control, efficient combustion, intensification of mass transfer heat transfer, inflaming and explosion prevention, artificial skeleton, absorption of radiation and noisedamping control in industrial processes such as metallurgical machinery, petrochemical industry, energy source and environmental protection, national defense and war industry, nuclear technology and biopharmaceutical industry, and is the critical technology for breaking through various technology.

Description

technical field [0001] The invention relates to the technical field of preparation of porous materials, in particular to the field of preparation of porous materials by a solid / gas eutectic directional solidification method. Background technique [0002] Since American Claus (C.Claus) obtained the US patent in 1923 by using the powder metallurgy method to make a filter, metal porous materials began to be recognized and applied. In the 1930s, porous materials such as bronze, nickel, and iron were used to produce filters for filtering air, fuel, and lubricating oil. After World War II, it was gradually applied to fluid pressure, flow control, prevention of wing icing, mercury infiltration switch, gas diffusion separation, etc. Since the 1960s, with the continuous expansion of application fields, manufacturing methods and molding technologies have also been continuously developed. In addition to powder sintered porous materials, metal fiber porous materials, foam metals, metal...

Claims

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Application Information

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IPC IPC(8): C22C1/08B22D47/00
Inventor 尤里·卡尔波夫孙克明李勇进
Owner 大连华乌科技转化有限公司
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