Method and device for preparing functionally graded structural component

A technology for functionally gradient and structural parts, applied in the field of preparing functionally graded structural parts, can solve the problems of difficulty in recycling, can not meet the diversification of product performance, waste powder, etc., and achieve the effect of easy recycling

Active Publication Date: 2015-02-11
HUNAN FARSOON HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the continuous development of rapid prototyping technology, the manufacture of structural parts with functional materials has become the need of scientific and technological development. At present, rapid prototyping technology has been tried to be applied to the manufacture of functionally graded structural parts, but the functionally graded structural parts manufactured by it are only in One-dimensional or

Method used

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  • Method and device for preparing functionally graded structural component
  • Method and device for preparing functionally graded structural component
  • Method and device for preparing functionally graded structural component

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example one

[0038] Such as figure 1 As shown, the method for preparing a functionally graded structure includes the following steps:

[0039] Step 11: Establish a three-dimensional solid CAD model of the structural part, and obtain the information of each layer of processing through the slice software processing;

[0040] Step 12: The forming cylinder is lowered by one layer thickness, and a layer of aluminum powder (melting point is 660.2℃) is spread on the forming cylinder so that the plane of the aluminum powder is flush with the working plane of the forming cylinder; and the need is determined according to the current sintering section Add the effective area of ​​magnesium powder (melting point is 650℃), and add magnesium powder on the effective area where the aluminum powder has been paved. The height of the added magnesium powder is calculated according to the mass ratio of the aluminum powder to the magnesium powder in the effective area get;

[0041] In this step, th...

Example Embodiment

[0054] Example two

[0055] image 3 It is the method flow chart of Embodiment 2 provided by the method for preparing a functionally graded structure of the present invention, Figure 4 Is a cross-sectional view of the circular piston structure prepared by the method in Example 2, such as image 3 As shown, the method for preparing a functionally graded structure includes the following steps:

[0056] Step 21: Establish a three-dimensional solid CAD model of the structure, and obtain the information of each layer of processing through the slice software processing;

[0057] Step 22: The forming cylinder is lowered by a layer thickness, and a layer of titanium carbide powder is spread on the forming cylinder so that the plane of the titanium carbide powder is flush with the working plane of the forming cylinder; and the need to add nickel, The effective area of ​​the molybdenum mixed powder, and the nickel and molybdenum mixed powder is added to the effective area where the titanium c...

Example Embodiment

[0069] Example three

[0070] Such as Figure 5 As shown, the device for preparing a functionally graded structure includes:

[0071] The slicing unit 31 is used to process the built three-dimensional solid CAD model to obtain the information of each processing level;

[0072] The powder spreading unit 32 is used to spread a layer of master powder on the working plane and add auxiliary powder on the effective area where the master powder has been spread;

[0073] The processing unit 33 determines the effective area where auxiliary powder needs to be added in the current sintering section, and calculates the height of the added auxiliary powder according to the mass ratio of the mother powder to the auxiliary powder in the effective area; and

[0074] The scanning unit 34 is used for laser scanning and sintering the master powder and auxiliary powder at the corresponding position according to the information of the processing level of each layer.

[0075] In specific implementation, the ...

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Abstract

The invention discloses a method and a device for preparing a functionally graded structural component. The method comprises the steps as follows: a three-dimensional entity CAD (computer-aided design) model of the structural component is established, and information of each processing layer is obtained through slicing software process; a forming cylinder is descended by a layer thickness height, a layer of main powder is spread on the forming cylinder, the effective area requiring for adding auxiliary powder is determined according to a current sintering section, the auxiliary powder is added in the effective area where the main powder is spread well, and the height of the added auxiliary powder is obtained by calculating a mass ratio of the main powder and the auxiliary powder in the effective area; and the main powder and the auxiliary powder are subjected to laser scanning sintering in corresponding positions according to the information of each processing layer. According to the method, the structural component with graded change in one-dimensional, two-dimensional or three-dimensional orientation can be prepared, so that requirements for product diversification performance are met, the auxiliary powder is only added in the effective area requiring auxiliary powder addition during the whole processing process, only the main powder is remained finally, and accordingly, the recovery of residual powder is facilitated.

Description

technical field [0001] The invention belongs to the field of rapid prototyping, and in particular relates to a method and a device for preparing a functionally graded structural part. Background technique [0002] Rapid Prototyping (RP) is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast speed, and rich and diverse material types. Since the late 1980s, So far, it has become a pillar technology in modern advanced manufacturing technology. [0003] Functionally graded materials (FGMs for short) refer to materials whose composition and structure change continuously from one direction (one-dimensional, two-dimensional or three-dimensional) to another direction, so that the performance and function of the material also present a gradient change. A new type of functional material. [0004] With the continuous development of rapid prototyping technology, the manufacture of...

Claims

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Application Information

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IPC IPC(8): B22F3/105
CPCY02P10/25
Inventor 许小曙苏婷杨大风
Owner HUNAN FARSOON HIGH TECH
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