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A platform for research: civil engineering, architecture and urbanism
Large-size ceramic core and preparation method thereof
The invention provides a large-size ceramic core and a preparation method thereof.The large-size ceramic core comprises a body, and raw materials of the body comprise a first component and a second component; the first component is prepared from the following components in percentage by mass: 0.01 to 85 percent of ceramic powder and 10 to 16 percent of plasticizer; the ceramic powder contains silicon dioxide or/and aluminum oxide; the second component comprises graphite and polypropylene fiber; the mass content of the graphite in the raw materials is 10-15% of the mass of the ceramic powder, and the mass content of the polypropylene fibers in the raw materials is 0.5-1.5% of the mass of the ceramic powder. According to the large-size ceramic core, the body takes the ceramic powder containing silicon dioxide or/and aluminum oxide, the plasticizer, the graphite and the polypropylene fiber as raw materials, the apparent porosity can reach 35-40%, recrystallization and hot cracking of a casting caused by too high strength and poor deformability of the ceramic core at a thick and large position can be avoided, and meanwhile, the depoling efficiency is improved.
本申请提出一种大尺寸陶瓷型芯及其制备方法，其中大尺寸陶瓷型芯，包括本体，所述本体的原料包括第一组分和第二组分；所述第一组分包括以下质量百分比的各组分：陶瓷粉料0.01‑85％和10‑16％增塑剂；所述陶瓷粉料含有二氧化硅或/和氧化铝；所述第二组分包括石墨和聚丙烯纤维；所述石墨在所述原料中的质量含量为所述陶瓷粉料质量的10‑15％，所述聚丙烯纤维在所述原料中的质量含量为所述陶瓷粉料质量的0.5‑1.5％。本申请的大尺寸陶瓷型芯，本体以含二氧化硅或/和氧化铝的陶瓷粉料、增塑剂、石墨和聚丙烯纤维为原料，显气孔率可达35‑40％，可避免厚大位置陶瓷型芯强度过高退让性差引发铸件再结晶、热裂，同时提高脱芯效率。
Large-size ceramic core and preparation method thereof
The invention provides a large-size ceramic core and a preparation method thereof.The large-size ceramic core comprises a body, and raw materials of the body comprise a first component and a second component; the first component is prepared from the following components in percentage by mass: 0.01 to 85 percent of ceramic powder and 10 to 16 percent of plasticizer; the ceramic powder contains silicon dioxide or/and aluminum oxide; the second component comprises graphite and polypropylene fiber; the mass content of the graphite in the raw materials is 10-15% of the mass of the ceramic powder, and the mass content of the polypropylene fibers in the raw materials is 0.5-1.5% of the mass of the ceramic powder. According to the large-size ceramic core, the body takes the ceramic powder containing silicon dioxide or/and aluminum oxide, the plasticizer, the graphite and the polypropylene fiber as raw materials, the apparent porosity can reach 35-40%, recrystallization and hot cracking of a casting caused by too high strength and poor deformability of the ceramic core at a thick and large position can be avoided, and meanwhile, the depoling efficiency is improved.
本申请提出一种大尺寸陶瓷型芯及其制备方法，其中大尺寸陶瓷型芯，包括本体，所述本体的原料包括第一组分和第二组分；所述第一组分包括以下质量百分比的各组分：陶瓷粉料0.01‑85％和10‑16％增塑剂；所述陶瓷粉料含有二氧化硅或/和氧化铝；所述第二组分包括石墨和聚丙烯纤维；所述石墨在所述原料中的质量含量为所述陶瓷粉料质量的10‑15％，所述聚丙烯纤维在所述原料中的质量含量为所述陶瓷粉料质量的0.5‑1.5％。本申请的大尺寸陶瓷型芯，本体以含二氧化硅或/和氧化铝的陶瓷粉料、增塑剂、石墨和聚丙烯纤维为原料，显气孔率可达35‑40％，可避免厚大位置陶瓷型芯强度过高退让性差引发铸件再结晶、热裂，同时提高脱芯效率。
Large-size ceramic core and preparation method thereof
一种大尺寸陶瓷型芯及其制备方法
LI JIANHUA (author) / BAI XIAOLONG (author) / CHENG TAO (author) / LIU WEI (author) / DUAN FANGMIAO (author) / ZHAO MING (author) / XU CHAO (author) / LIU GUANGHUA (author) / ZHANG TAO (author) / LU MINGANG (author)
2024-08-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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