Powder spreading processing based functionally graded material preparation device and method

A technology of gradient functional material and preparation device, which is applied in the field of laser selective melting and molding to achieve the effect of expanding the scope, improving the comprehensive performance and low development cost

Inactive Publication Date: 2014-08-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional preparation methods can only produce functionally gradient materials with small size and simple shape.

Method used

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  • Powder spreading processing based functionally graded material preparation device and method
  • Powder spreading processing based functionally graded material preparation device and method
  • Powder spreading processing based functionally graded material preparation device and method

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Experimental program
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Embodiment

[0038] Such as figure 1 --4 shown. The invention discloses a gradient functional material preparation device based on powder spreading processing, which includes a powder spreading device, a feeding device, a powder collecting device, and a powder mixing control device sequentially connected through pipelines from top to bottom;

[0039] The feeding device includes three powder barrels 1-1, namely A powder barrel, B powder barrel, and C powder barrel;

[0040] The powder collection device includes a powder collection chamber 2-1;

[0041] The powder mixing control device includes a buffer screen 3-1, a stirring blade 3-2, a control switch 3-3, and a powder supply port 3-4 arranged sequentially from top to bottom;

[0042] The powder barrel 1-1 is connected to the powder collection chamber 2-1 through a pipeline, and a flow controller 1-2 and a gas power generator 1-3 are arranged in sequence on this pipeline from top to bottom;

[0043] A pressure limiting valve 2-2 is prov...

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Abstract

The invention discloses a powder spreading processing based functionally graded material preparation device and method. The powder spreading processing based functionally graded material preparation device comprises a powder spreading device, a feeding device, a powder collecting device and a powder mixing control device; the feeding device, the powder collecting device and the powder mixing control device are connected sequentially from upside to downside through pipelines; the feeding device comprises three powder cylinders, i.e., powder cylinder A, powder cylinder B and powder cylinder C; the powder collecting device comprises a powder collecting chamber; the powder mixing control device is provided; the powder cylinders are connected to the powder collecting chamber through pipelines, and flow controllers and gas power generators are arranged on the pipelines sequentially from upside to downside; a pressure-limiting valve is arranged at the joint of the powder collecting chamber and the powder mixing control device. The functionally graded material which is prepared by adopting the device and method has no obvious interface or separated layer, the gradient change can be realized in a horizontal plane and a vertical plane of substrate during the processing process, good spatial continuity is achieved, direct melting molding of high-melting metal can be realized, and the use range of the functionally graded material is enlarged.

Description

technical field [0001] The invention relates to the technical field of laser selective melting and molding, in particular to a preparation device and method for gradient functional materials based on powder coating processing. Background technique [0002] With the development of national defense high-tech and energy technology, the requirements for material performance become more and more stringent, sometimes according to the different external environment, there are different special requirements for different parts of the same material, in this case, gradient function Materials (Functionally Graded Material, FGM for short) play an increasingly important role. FGM is a new type of material based on computer-aided design and advanced material preparation technology to make the composition and structure of the material change in a gradient along the thickness direction, so that the performance of the material also changes in a gradient. From the structural point of view of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/115B22F3/105B22F9/04C23C24/10
Inventor 杨永强王赟达宋长辉
Owner SOUTH CHINA UNIV OF TECH
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