A premixed powder 3D printing separation detection method
A technology of 3D printing and detection method, applied in the field of 3D printing, can solve problems such as inability to detect, achieve the effect of simple method, low business quality requirements, and ensure the proportion of components
Active Publication Date: 2021-04-30
SUZHOU UNIV
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a premixed powder 3D printing separation detection method to solve the problem that the 3D printing separation of premixed powders with the same color, similar bulk density and similar particle size cannot be detected, and the operation is simple and easy to implement
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[0035] 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.
[0036] The invention discloses a premixed powder 3D printing separation detection method, comprising the following steps:
[0037] 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;
[0038] In this step, powder a and powder b are mixed for 30-60 minutes using a ball mill to mix them uniformly.
[0039] Step 2, fixing an acrylic plate on the workbench of the 3D printer, the upper surface of the acrylic plate is provided with a release film, and a dou...
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Abstract
The invention discloses a pre-mixed powder 3D printing separation detection method. When collecting the powder, an acrylic plate with a release film is used, and double-sided adhesive and colorless and transparent epoxy resin glue are used to solve the problem of surface defects during sampling. For the problem that the sample wrinkle interferes with the detection results, the mixed powder layer is sampled and the element energy spectrum is scanned, and the actual ratio of the mixed powder is calculated according to the energy spectrum color image obtained by scanning, so as to judge whether the powder is separated. The invention can effectively solve the technical problem that premixed powders with the same color, similar bulk density, and similar particle size cannot be detected by 3D printing separation, ensure the distribution ratio of material components, and are simple to operate and easy to implement.
Description
technical field [0001] The invention relates to the technical field of 3D printing, in particular to a separation detection method for 3D printing of premixed powder. Background technique [0002] As my country's energy and power demand continues to rise, the extreme service conditions of major equipment have become a trend. Functionally graded materials overcome the stress concentration and micro-crack defects of traditional composite materials due to their material components and macroscopic properties showing continuous and uniform gradient changes in spatial positions, and can meet the differentiated performance requirements of different parts of major equipment. [0003] 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...
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IPC IPC(8): G01N23/2251G01N23/2202
Inventor 王呈栋张佩强鲍振林马健溥
Owner SUZHOU UNIV