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Ink-jet 3D printing supporting structure generation method

A support structure, 3D printing technology, applied in the field of 3D printing, can solve the problems of poor printing quality and product deformation, achieve the effect of good printing quality, prevent internal stress, and improve the surface quality of the workpiece

Pending Publication Date: 2021-04-20
SUZHOU FUSION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method for generating an inkjet 3D printing support structure to solve the problem of poor printing quality caused by contact between the bottom surface that needs to be supported and the powder in the compacted state during the current powder spreading process; and the large internal stress of the printed product Problems that cause deformation after sintering

Method used

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  • Ink-jet 3D printing supporting structure generation method
  • Ink-jet 3D printing supporting structure generation method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 and 2 As shown, a method for generating an inkjet 3D printing support structure, comprising steps:

[0037] S1. Print the supporting ceramic layer by using the fused deposition molding method, and proceed to step S2; the materials of the ceramic layer include printing wires of oxide ceramics such as alumina, zirconia, and calcium oxide.

[0038] S2. Carry out powder spreading and compacting on the ceramic layer, and proceed to step S3; the powder in the powder spreading process is made of the same material as the main part of the workpiece. The material includes alloy powders such as stainless steel, tool steel, copper alloy and high-temperature alloy, which are the same as the main part of the workpiece.

[0039] S3, perform inkjet printing, enter step S4;

[0040] S4. Judging whether to print to the last layer of the support structure, enter step S5; in step S4, when judging whether to print to the last layer of the support structure, if it is the ...

Embodiment 2

[0048] Such as figure 1 and 2 As shown, two materials that are properly prepared for support sintering include a powder that is the same as the main part of the workpiece and a specific support printing wire that includes oxides such as alumina, zirconia, and calcium oxide. Ceramic printing wire;

[0049] When generating supports, design the support structure as a multi-layer structure, and adjacent layers are composed of different materials;

[0050] The layer thickness of the oxide ceramic material in the multi-layer support should be a specific value, and the specific value should be smaller than the thickness of the workpiece printing layer;

[0051] The part in contact with the lower surface of the workpiece should be made of ceramic material, and the thickness of this layer is equal to the thickness of the printing layer of the workpiece;

[0052] In the printing process of the support, the printing of the support ceramic part with a specific layer thickness is first ...

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Abstract

The invention relates to the technical field of 3D printing, and discloses an ink-jet 3D printing supporting structure generation method. The ink-jet 3D printing supporting structure generation method comprises the steps of S1, printing a supported ceramic layer by using a fused deposition modeling mode, and executing the step S2; S2, carrying out powder laying and compaction on the ceramic layer, and executing the step S3; S3, carrying out ink-jet printing, and executing the step S4; S4, judging whether to print to the last layer of the supporting structure or not, and executing the step S5; and S5, printing the last layer of the supporting structure. The problems that in the current powder laying process, the printing quality is poor due to the fact that the bottom face needing to be supported makes contact with compacted-state powder, and a product obtained through printing has large internal stress, so that deformation is generated after sintering is finished are solved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a method for generating an inkjet 3D printing support structure. Background technique [0002] In the field of metal 3D printing, inkjet 3D printing technology is one of the commonly used mainstream 3D printing technologies. This technology spreads the metal powder on the printing platform layer by layer through the powder spreading device, and at the same time compacts the powder; then controls the nozzle to spray the binder at a specific position for the printing step; then prints layer by layer until it is cleared after completion The powder attached to the surface is taken out of the workpiece model; finally, degreasing and high-temperature sintering are performed to obtain the final metal part. [0003] In the traditional inkjet printing technology, the powder coating printing process is an important intermediate link in the forming of the workpiece. At the same time, t...

Claims

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Application Information

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IPC IPC(8): B22F10/14B22F10/31B22F12/30B22F3/105B28B1/00B33Y10/00B33Y30/00B33Y70/00
Inventor 王俊李健喆封华章锦晶龙旺平吴晓雨
Owner SUZHOU FUSION TECH CO LTD
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