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Method for regulating premixed power 3D printing separation

A 3D printing and mixing powder technology, applied in the field of 3D printing, can solve the problems of lack of powder 3D printing separation detection and control methods, and achieve the effect of easy implementation and simple operation

Active Publication Date: 2019-05-14
SUZHOU UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0003] Currently, there is no effective powder 3D printing separation detection and control method for premixed powders with the same color, similar bulk density, and similar particle size

Method used

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  • Method for regulating premixed power 3D printing separation
  • Method for regulating premixed power 3D printing separation
  • Method for regulating premixed power 3D printing separation

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0037] refer to figure 1 , the invention discloses a premixed powder 3D printing separation control method, comprising the following steps:

[0038] Step 1. Evenly mix powder a and powder b according to a predetermined ratio k to obtain a mixed powder, and put the mixed powder into the powder feeding hopper of the 3D printer; wherein, the predetermined ratio k is greater than 0, and powder a and powder b are two different powder;

[0039] In this step, powder a and powder b are mixed for 30-60 minutes using a ball mill to mix them uniformly.

[0040] Step 2, fixing an acrylic plate on the workbench of the 3D printer, the upper surface of the acrylic plate is provided with a rele...

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Abstract

The invention discloses a method for regulating premixed power 3D printing separation. The method for regulating the premixed power 3D printing separation includes the following steps that collectionand sample preparation are conducted on a mixed power bed, the mixed powder bed is divided with equal width, a plurality of zones are obtained, and each zone is sampled and subjected to surface scanning through an element energy spectrum; and according to an energy spectrum color graph obtained by scanning, the powder ratio of each zone is calculated, and the width of non-separation powder is determined. According to the method for regulating the premixed power 3D printing separation, on the premise of not changing the powder feeding rate and scanning speed, only a laser spot diameter or a spraying distance is changed, so that the difficult problem of 3D printing separation of the premixed powder with the same color, similar apparent density and similar particle size can be solved, and themethod is simple in operation and easy to implement.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a separation and control method for 3D printing of premixed powder. Background technique [0002] Functionally graded materials have the characteristics of high mechanical strength, thermal shock resistance, and high temperature resistance, and are widely used in aerospace, energy, power, and biomedical fields. Laser 3D printing is an important method for preparing functionally graded materials by controlling the mass ratio of premixed powders to achieve gradient changes in material properties. However, due to the difference in powder quality and particle diameter, the pre-mixed powder will be separated under the high-speed jetting of laser 3D printing, resulting in deviations in material composition, resulting in a decline in the performance of the material and failing to meet the design requirements. Therefore, how to effectively control and avoid the separation of premixe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y50/02B22F1/00
Inventor 王呈栋张佩强鲍振林刘海华
Owner SUZHOU UNIV
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