Application of metallurgical bonding of metal wire with porous material in manufacturing high temperature resistant mechanical part

A technology combining mechanical parts and metallurgy, applied in mechanical equipment, engine components, engine functions, etc., can solve problems such as difficulty in forming a stable and continuous gas film layer, reducing safety and reliability of parts, and difficulty in lamination process, and achieve cost Low, sufficient heat exchange, the effect of improving the service life

Inactive Publication Date: 2019-12-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that the dense wall surface layer still adopts the conventional manufacturing method, and small holes are processed on the surface for the dense wall surface layer, and then filled with porous media material inside. The surface is not a porous material, and it is difficult for the outer surface of the blade to form a stable and continuous surface when it is working. air layer
The disadvantage is that the dense wall layer is still made by the conventional manufacturing method, and then the porous medium layer is covered on the dense wall layer. The blade is in the shape of a curved surface. The two materials must be firmly laminated together, and the lamination process is difficult. The process is complex and reduces the safety and reliability of the parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The application of the metallurgy-bonded porous material provided by this embodiment in the manufacture of high-temperature-resistant mechanical parts is as follows: firstly, the metal wire materials are gathered together, pressed to make the metal wires contact each other, and realize the Metallurgical combination to prepare porous metal wire materials with connected pores; then process the porous metal wire materials into porous high-temperature resistant mechanical parts, and assemble the porous high-temperature resistant mechanical parts to the corresponding positions in the mechanical structure to fix them; then Let the fluid enter the high temperature resistant mechanical parts through the fluid channel, make the fluid pass from the inner surface side of the porous high temperature resistant mechanical parts to the outer surface of the porous high temperature resistant mechanical parts through the pores of the porous high temperature resistant mechanical parts, and ...

Embodiment 2

[0039] The difference from Example 1 is that in this example, 100 H13 steel wires with a diameter of 55 microns are used as a bundle, and the multi-bundle wires are braided into a thick rope with a diameter of 300 mm by a rope braiding machine, and then the braided A good thick rope with a diameter of 300 mm is sintered in a vacuum heating furnace, heated to 1250 degrees Celsius for two hours, so that metallurgical bonding between the wires is achieved, and H13 steel rods with long fibers and porosity are manufactured. Then carry out cold forging at room temperature to reduce the diameter of the material by 10%, increase the density of the material, reduce the size of the pores, and manufacture a porous metal wire material with a maximum characteristic size of pores of 50 microns and a porosity of 35%. Then the prepared wire porous material is machined into aircraft engine blade parts.

[0040] Compared with the prior art, this embodiment has the following advantages and benef...

Embodiment 3

[0042] The difference from Example 2 is that in this example, the thick rope with a diameter of 300 mm obtained in Example 2 is cut into a cylinder with a length of 500 mm, heated to 1250 degrees Celsius, and then the hot cylinder is placed in the extrusion cylinder , the diameter of the core rod is 50 mm, the diameter of the outlet is 290 mm, and it is extruded in a pipe extrusion die to manufacture a pipe with an outer diameter of 290 mm, a hole diameter of 50 mm, and a wall thickness of 120 mm. Due to the small extrusion deformation , the pores in the material will not be completely eliminated, the obtained tube material contains tiny pores, and then the prepared metal wire multi-porous tube material is machined into a turbine disk part with an annular inner cavity of an aircraft engine, and the metal wire is multi- The turbine disk of porous material is installed and fixed on the rotating shaft of the aircraft engine, and then the metal wire porous material blade is install...

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Abstract

The invention discloses application of metallurgical bonding of a metal wire with a porous material in manufacturing a high temperature resistant mechanical part. The metal wire material is collectedtogether to press to enable the metal wires to be in contact with each other; metallurgical bonding between the metal wires is realized to prepare a metal wire porous material with communicating pores; the metal wire porous material is processed into a porous high temperature resistant mechanical part, and the porous high temperature resistant mechanical part is assembled into a mechanical structure to be fixed at a corresponding position; fluid passes by a fluid channel to enter the high temperature resistant mechanical part; fluid reaches the outer surface of the porous high temperature resistant mechanical part from one side of the inner surface of the porous high temperature resistant mechanical part through the pores of the porous high temperature resistant mechanical part; the poroushigh temperature resistant mechanical part is cooled, and a fluid film is formed on the outer surface of the porous high temperature resistant mechanical part to prevent a heat flow from being in direct contact with the porous high temperature resistant mechanical part, so that the porous high temperature resistant mechanical part works at a lower temperature. According to the invention, the service life of the porous high temperature resistant mechanical part under the high temperature working environment can be prolonged.

Description

technical field [0001] The invention relates to the technical field of metal porous materials applied to high-temperature-resistant mechanical parts, in particular to the application of a metallurgy-bonded porous material in the manufacture of high-temperature-resistant mechanical parts. Background technique [0002] The application number is CN201820308098, and the invention name is "working blade edge plate cooling structure". The Chinese utility model patent application of China Aviation Development Commercial Aviation Engine Co., Ltd. provides a working blade edge plate cooling structure, and the working blade includes the edge plate. An air film hole is provided on the top surface of the edge plate, a cooling channel is provided inside the edge plate, and one end of the cooling channel communicates with the side of the edge plate; a process plug is provided on the side of the edge plate, One end of the cooling channel communicates with the process plug, the process plug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/08F01D5/08F01D5/18F01D5/28F01D25/12F23R3/42
CPCF01D5/08F01D5/186F01D5/28F01D25/005F01D25/08F01D25/12F05D2230/22F05D2230/232F05D2260/202F05D2300/514F23R3/42
Inventor 周照耀
Owner SOUTH CHINA UNIV OF TECH
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