Light curing 3D printing preparing method for complex double-wall silicon-based ceramic core
A ceramic core and 3D printing technology, which is applied in the field of precision casting, can solve problems such as complex procedures and high costs, and achieve the effects of simplifying the process flow, reducing cost loss, and reducing process steps
Active Publication Date: 2020-05-05
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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The invention relates to the field of precise casting and particularly relates to a light curing 3D printing preparing method for a complex double-wall silicon-based ceramic core for investment casting. The method comprises the steps that firstly, silicon-based ceramic core paste with high solid content, high printing performance and more stable and more excellent flow settling performance is prepared; secondly, a three-dimensional model of the complex double-wall silicon-based ceramic core is obtained according to a single crystal hollow double-wall engine blade needing to be obtained, and the core three-dimensional model is subjected to slicing treatment and light curing 3D printing path programming; thirdly, an STL file of the core is imported into a light curing 3D printer, printing iscarried out layer by layer in combination with the silicon-based ceramic core paste prepared in the first step, and a light cured double-wall core biscuit is obtained; and fourthly, the core biscuitis subjected to drying and sintering processes, and the light cured 3D printed complex double-wall silicon-based ceramic core is obtained. The complex double-wall silicon-based ceramic core is used for precise casting of the hollow engine blade and replaces a double-wall core which is complex in working procedure and needs to be manufactured through multiple dies in traditional investment casting.
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Property | Measurement | Unit |
Granularity | 20.0 ~ 40.0 | nm |
Granularity | 100.0 ~ 300.0 | µm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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