期刊
CERAMICS INTERNATIONAL
卷 47, 期 1, 页码 740-747出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.08.184
关键词
Ceramic SL-3D printing; Micro-milling; Dimensional accuracy; Shrinkage compensation; Pre-sintering
资金
- National Key Research and Development Project, China [2018YFB2002205]
- Key Research and Development Program of Shandong Province, China [2019GGX104049]
- Major Program of Shandong Province Natural Science Foundation, China [ZR2018ZA0401, ZR2018ZB0521]
This study utilized additive and subtractive technologies to prepare ceramic groove parts, proposing a model based on shrinkage compensation and micro-milling to improve dimensional accuracy. Additionally, the effectiveness of the proposed dimensional accuracy control method was verified through investigating micro-chipping on machined edges of the workpiece.
Ceramic stereolithography Three-Dimensional (SL-3D) printing has a unique advantage in forming ceramic parts with complex shapes. However, because of the effects of the slicing layer thickness, laser spot diameter, and curing inhomogeneity, its manufacturing dimensional accuracy still lags far behind traditional processing methods. In this study, a manufacturing process based on additive and subtractive technologies was used to prepare ceramic groove parts. The manufacturing process of ceramic groove parts is composed of SL-3D printing, debinding, micro-milling, and sintering processes. In order to improve the dimensional accuracy of ceramic groove parts, a model based on shrinkage compensation and micro-milling was proposed. The dimensional change pattern in the curing phase was modelled and a shrinkage compensation method was established to control the dimensional accuracy of the finished parts. A method to characterize the micro-chipping on machined edges of the workpiece was investigated by applying a micro-milling cutter to process the 3D-printed part pre -sintered at 1150 degrees C. The effectiveness of the proposed dimensional accuracy control method was verified by the case study of a ZrO2 ceramic part.
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