Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of cristobalite content controllable photocuring 3D printing silicon-based ceramic core
The invention relates to a preparation method of a cristobalite content-controllable photocuring 3D printing silicon-based ceramic core. The preparation method comprises the following steps: preparing silicon-based ceramic solid-phase powder and a liquid-phase solvent into a pre-curing agent; the silicon-based ceramic solid-phase powder comprises a skeleton propping agent, an auxiliary sintering agent and a cristobalite content regulating agent; the liquid phase solvent comprises a viscosity modifier, an auxiliary curing agent, a powder agglomeration inhibitor and a crosslinking auxiliary agent. The pre-curing agent is subjected to photocuring 3D printing treatment, and a ceramic core biscuit is obtained; and the ceramic core biscuit is subjected to degreasing treatment and sintering treatment, and the photocuring 3D printing silicon-based ceramic core is obtained. According to the invention, the content of quartz can be accurately regulated and controlled, the use of an auxiliary sintering agent is reduced, the components of the ceramic core are simplified, the number of microcrack particles in the microstructure of the silicon-based ceramic core material is reduced, the stress concentration phenomenon caused by microcracks is weakened, and the high-temperature strength of the ceramic core is improved; and the method is better used for high-temperature alloy casting.
本发明是关于一种方石英含量可控的光固化3D打印硅基陶瓷型芯的制备方法，包括如下步骤：将硅基陶瓷固相粉体和液相溶剂配制成预固化剂。硅基陶瓷固相粉体包括：骨架支撑剂、辅助烧结剂及方石英含量调控剂；液相溶剂包括：粘度调节剂、辅助固化剂、粉末团聚抑制剂及交联辅助剂。对预固化剂进行光固化3D打印处理，得到陶瓷型芯素坯；对陶瓷型芯素坯进行脱脂处理、烧结处理，得到光固化3D打印硅基陶瓷型芯。本发明能够对方石英的含量进行精确调控，减少辅助烧结剂的使用，简化陶瓷型芯的成分，减少了硅基陶瓷型芯材料显微组织中含微裂纹颗粒的数量，使微裂纹导致的应力集中现象减弱，提高了陶瓷型芯的高温强度，更好地用于高温合金铸造。
Preparation method of cristobalite content controllable photocuring 3D printing silicon-based ceramic core
The invention relates to a preparation method of a cristobalite content-controllable photocuring 3D printing silicon-based ceramic core. The preparation method comprises the following steps: preparing silicon-based ceramic solid-phase powder and a liquid-phase solvent into a pre-curing agent; the silicon-based ceramic solid-phase powder comprises a skeleton propping agent, an auxiliary sintering agent and a cristobalite content regulating agent; the liquid phase solvent comprises a viscosity modifier, an auxiliary curing agent, a powder agglomeration inhibitor and a crosslinking auxiliary agent. The pre-curing agent is subjected to photocuring 3D printing treatment, and a ceramic core biscuit is obtained; and the ceramic core biscuit is subjected to degreasing treatment and sintering treatment, and the photocuring 3D printing silicon-based ceramic core is obtained. According to the invention, the content of quartz can be accurately regulated and controlled, the use of an auxiliary sintering agent is reduced, the components of the ceramic core are simplified, the number of microcrack particles in the microstructure of the silicon-based ceramic core material is reduced, the stress concentration phenomenon caused by microcracks is weakened, and the high-temperature strength of the ceramic core is improved; and the method is better used for high-temperature alloy casting.
本发明是关于一种方石英含量可控的光固化3D打印硅基陶瓷型芯的制备方法，包括如下步骤：将硅基陶瓷固相粉体和液相溶剂配制成预固化剂。硅基陶瓷固相粉体包括：骨架支撑剂、辅助烧结剂及方石英含量调控剂；液相溶剂包括：粘度调节剂、辅助固化剂、粉末团聚抑制剂及交联辅助剂。对预固化剂进行光固化3D打印处理，得到陶瓷型芯素坯；对陶瓷型芯素坯进行脱脂处理、烧结处理，得到光固化3D打印硅基陶瓷型芯。本发明能够对方石英的含量进行精确调控，减少辅助烧结剂的使用，简化陶瓷型芯的成分，减少了硅基陶瓷型芯材料显微组织中含微裂纹颗粒的数量，使微裂纹导致的应力集中现象减弱，提高了陶瓷型芯的高温强度，更好地用于高温合金铸造。
Preparation method of cristobalite content controllable photocuring 3D printing silicon-based ceramic core
方石英含量可控的光固化3D打印硅基陶瓷型芯的制备方法
LI QIAOLEI (Autor:in) / QU BOYANG (Autor:in) / LI JINGUO (Autor:in) / LIANG JINGJING (Autor:in) / ZHOU YIZHOU (Autor:in) / SUN XIAOFENG (Autor:in)
19.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B22C
FOUNDRY MOULDING
,
Gießformen
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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