陶瓷雷射快速原型製程優化及應用

Optimization and Appliction of Ceramic Laser Rapid Prototyping Technique

陳皇印(Huang-Yin Chen)

指導教授 ： 湯華興

國立臺北科技大學/機電學院/製造科技研究所/碩士(2006年)

https://doi.org/10.6841/NTUT.2006.00305

摘要

本研究的目的是希望能夠利用陶瓷雷射快速原型機建立10-50μm之製程參數，並且應用優化的製程參數製作工件。為了達到此目的，必需更改材料配方、改善機器設備以及建立雷射掃描參數，最後將製作出特徵細微之燒結與熔結的陶瓷工件。
本文第一部分為改良材料配方、建立乾燥溫度參數、加裝昇降Z軸之減速機改善Z軸精確度與雷射掃描之基礎特性研究，第二部份為研究不同的離焦距離、不同雷射功率與進行掃描速度對變質層深度與掃描線寬的影響。第三部分為應用第二部份所建立的雷射掃描參數製作陶瓷工件，其中包含繪製3D CAD、工件切層及轉檔，並以陶瓷快速原型機製作陶瓷工件。
陶瓷快速原型機經過改良後，疊層厚度已從100μm縮小到10μm，且機器的Z軸精度佳，每層誤差皆可控制在1μm以內。利用新漿料配方將未掃描的生坏泡在水中可容易將其崩解，所以製作工件時只要把生坯塊泡在水裡就能快速地清料獲得工件。在雷射掃描參數方面，以間接方式所獲得之離焦掃描參數變質層深度介於10-50μm，可以得到燒結工件。此外，利用燒結參數所製作出的工件，可成功地進行滲透，使工件的強度得以改善。

關鍵字

陶瓷雷射快速原型 ； 陶瓷工件 ； 燒結 ； 熔結

並列摘要

The aim of this study is to establish process parameters for layer with thickness of 10-50 μm by ceramic laser prototyping system. For achieving this purpose, changing material formulation, improving the system and establish laser scanning parameters are indispensable. Finally, workpieces with details were fabricated with sintering and fusing respectively.
The first part of this study included modification of material formulation, establishing the drying temperature parameter, improving the accuracy of Z direction movement by installing a reducer, and studying the characteristic of laser scanning. The second part studied the property transformation depth and scanning line width, which were influenced by different off-focus distances, laser power and scanning velocity. The third part was the fabricating workpiece with the parameters established in the second part; it included 3D CAD, workpiece slicing, file transform and making workpiece by ceramic laser prototyping system.
After the system the system, the layer thickness was reduced from 100 μm to 10 μm, and the accuracy of Z axis was better; the error of each layer could be controlled within 1μm. By using the new formulation slurry, the un-scanned green piece was collapsed easily in water; therefore, workpiece could be get rapidly by immerse the green block in water. Regarding the laser scanning parameters, the off-focus scanning property transformation depth of 10-50μm was obtained by indirect method. Besides, the workpieces made by sintering parameters could be infiltrated successfully to improve the strength of workpiece.

並列關鍵字

Ceramic laser prototyping ； Ceramic workpiece ； sintering ； fusing

參考文獻

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