| 초록 |
3D printing technology, also known as additive manufacturing, robocasting is a simple way to manufacture ceramic parts. This technology can use materials with viscoelastic properties to maintain the shape of 3D objects and create simple 3D shapes without supporters. However, there are limitations in forming a ceramic component having a complicated shape such as limitation in printing height at a certain projecting angle, difficulty in removing the supporter after sintering, and inability to form a double supporter. To overcome these limitations, we implemented pods technology. The ceramic paste used in this technology was manufactured by changing the viscoelastic properties by adjusting the additive content to 3~10 vol.%. It was found that 10 vol.% with the highest content of additives had the highest yield stress value of 111.11 Pa and printing was possible with 10 vol.%. Subsequently, prints of a limited height could be easily printed only in a simple structure, but printing was limited in complicated and inclined shapes. To overcome these limitations, PODS was applied and compared with existing processes. As a result, application of pods overcomes the limitations of printing in complex and slanted printing shapes. In addition, it was confirmed that the same printing is possible using a ceramic paste of 6 vol.%, which has a low yield strength and can be printed even at a low pressure. It is expected that it can be used in a wide range of fields such as electronics, mechanical precision parts, and bios because it can realize complex shapes at high printing speeds as well as simple structure printing that was previously limited through the application of PODS. |
