Functionally gradient material forming method and functionally gradient material forming device

A technology of functionally graded materials and forming chambers, which is applied in the field of material processing, can solve the problems of complex forming process and inability to realize the forming of complex structural parts, and achieve the effect of reducing the difficulty of forming

Inactive Publication Date: 2017-05-31
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above method can only be used to form some functionally graded materials with relatively simple structures, and cannot realize the formation of complex structural parts.
And the forming process is more complex

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiments of the present invention include the following steps:

[0064] (1) Using the ANASYS finite element analysis method to design the optimal composition distribution and structure of the gradient material, that is, the thickness of the gradient layer, the number of layers and the composition ratio of each layer;

[0065] (2) Put the Inconel718 powder in the powder tank 1, and put the 316L powder in the powder tank 2. According to the optimal distribution ratio of each layer in step (1), determine the amount of powder that powder tank 1 and powder tank 2 drop to the powder mixing tank each time. Among them, Inconel718 powder and 316L powder are both spherical or nearly spherical, the average particle size of both is 20-45 μm, and the oxygen content is lower than 1000ppm.

[0066] (3) Rapidly mix the powder falling in the powder mixing cylinder, and the evenly mixed powder falls into the forming chamber 2 of the 3D printing forming device.

[0067] (4) Start the...

Embodiment 2

[0071] Embodiments of the present invention include the following steps:

[0072] (1) Using the ABAQUS finite element analysis method to design the optimal composition distribution and structure of the gradient material, that is, the thickness of the gradient layer, the number of layers and the composition ratio of each layer;

[0073] (2) Put the Ti powder in the powder tank 1, and put the TiAl powder in the powder tank 2. According to the optimal distribution ratio of each layer in step (1), determine the amount of powder that powder tank 1 and powder tank 2 drop to the powder mixing tank each time. Wherein, the Ti powder and the TiAl powder are spherical or nearly spherical, the average particle size of both is 20-45 μm, and the oxygen content is lower than 1000 ppm.

[0074] (3) Rapidly mix the powder falling in the powder mixing cylinder, and the evenly mixed powder falls into the forming chamber 2 of the 3D printing forming device.

[0075] (4) Start the 3D printing fo...

Embodiment 3

[0079] Embodiments of the present invention include the following steps:

[0080] (1) Using the MARC finite element analysis method to design the optimal composition distribution and structure of the gradient material, that is, the thickness of the gradient layer, the number of layers and the composition ratio of each layer;

[0081] (2) Put the Ti6Al4V powder in the powder tank 1, and place the TiC powder in the powder tank 2. According to the optimal distribution ratio of each layer in step (1), determine the amount of powder that powder tank 1 and powder tank 2 drop to the powder mixing tank each time. Among them, Ti6Al4V powder and TiC powder are both spherical or nearly spherical, with an average particle size of 20-45 μm and an oxygen content of less than 1000 ppm.

[0082] (3) Rapidly mix the powder falling in the powder mixing cylinder, and the evenly mixed powder falls into the forming chamber 2 of the 3D printing forming device.

[0083] (4) Start the 3D printing f...

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Abstract

The invention discloses a functionally gradient material forming method and a functionally gradient material forming device. The functionally gradient material forming method at least includes firstly, mixing raw materials according to a preset proportion of each layer of components; secondly, subjecting the mixed materials to 3D printing; thirdly, repeating the first step and the second step so as to obtain a functionally gradient material. The functionally gradient material forming method and the functionally gradient material forming device have the advantages that the raw materials are mixed firstly, the mixed materials are subjected to 3D printing, and complex three-dimensional processing is converted into simple two-dimensional processing, so that complex part forming difficulty is lowered greatly, and the functionally gradient material of a complex structure can be formed simply.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a method and device for forming functionally graded materials. Background technique [0002] The concept of Functionally Gradient Materials (Functionally Gradient Materials, FGMs) was first proposed by Japanese scholars Masaoyuki Shinno and others in 1987. Through special design and structure, the composition and performance of materials can be slowly changed to meet specific functional requirements. . Gradient materials not only retain the advantages of ordinary composite materials, but also introduce the design idea of ​​compositional and functional gradients, thereby overcoming the adverse effects of the macroscopic interface of traditional layered composite materials, and replacing the abrupt interface with a continuously changing composition gradient, thus The sudden change in the physical properties of the interface is eliminated, and the thermal stress is mini...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00B33Y30/00
CPCB33Y10/00B33Y30/00B22F10/10B22F10/00B22F10/36B22F10/32B22F12/49B22F12/41B22F12/44B22F10/64B22F10/20Y02P10/25
Inventor 周燕吴和保朱文志张臣李秀朱小帅
Owner WUHAN INSTITUTE OF TECHNOLOGY
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