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Soluble ceramic core and preparation method and application thereof
The invention belongs to the related technical field of additive manufacturing, and discloses a soluble ceramic core and a preparation method and application thereof.The method comprises the following steps that 1, calcium carbonate powder and aluminum powder are evenly mixed to form mixed powder, and the mixed powder serves as a raw material to prepare a ceramic core blank; (2) after sintering the ceramic core green body, cooling along with a furnace to obtain a soluble ceramic core; in the sintering process, aluminum powder is oxidized to generate aluminum oxide, CaCO3 is decomposed to generate CaO, and the aluminum oxide is subjected to volume expansion in the process of reacting with calcium oxide so as to counteract shrinkage generated in the sintering process of the ceramic core blank. According to the invention, the problem of large size error of the ceramic core caused by large shrinkage when the ceramic core is prepared from calcium carbonate is solved.
本发明属于增材制造相关技术领域，其公开了一种可溶性陶瓷型芯及其制备方法与应用，该方法包括以下步骤：(1)将碳酸钙粉末与铝粉混合均匀以形成混合粉末，以所述混合粉末为原料制备得到陶瓷型芯坯体；(2)对所述陶瓷型芯坯体进行烧结后，随炉冷却以得到可溶性陶瓷型芯；烧结过程中，铝粉发生氧化生成氧化铝，CaCO3分解生成CaO，氧化铝在与氧化钙反应的过程中伴随着体积膨胀，以抵消陶瓷型芯坯体在烧结过程中产生的收缩。本发明解决了碳酸钙制备陶瓷型芯时产生较大收缩而导致陶瓷型芯的尺寸误差较大的问题。
Soluble ceramic core and preparation method and application thereof
The invention belongs to the related technical field of additive manufacturing, and discloses a soluble ceramic core and a preparation method and application thereof.The method comprises the following steps that 1, calcium carbonate powder and aluminum powder are evenly mixed to form mixed powder, and the mixed powder serves as a raw material to prepare a ceramic core blank; (2) after sintering the ceramic core green body, cooling along with a furnace to obtain a soluble ceramic core; in the sintering process, aluminum powder is oxidized to generate aluminum oxide, CaCO3 is decomposed to generate CaO, and the aluminum oxide is subjected to volume expansion in the process of reacting with calcium oxide so as to counteract shrinkage generated in the sintering process of the ceramic core blank. According to the invention, the problem of large size error of the ceramic core caused by large shrinkage when the ceramic core is prepared from calcium carbonate is solved.
本发明属于增材制造相关技术领域，其公开了一种可溶性陶瓷型芯及其制备方法与应用，该方法包括以下步骤：(1)将碳酸钙粉末与铝粉混合均匀以形成混合粉末，以所述混合粉末为原料制备得到陶瓷型芯坯体；(2)对所述陶瓷型芯坯体进行烧结后，随炉冷却以得到可溶性陶瓷型芯；烧结过程中，铝粉发生氧化生成氧化铝，CaCO3分解生成CaO，氧化铝在与氧化钙反应的过程中伴随着体积膨胀，以抵消陶瓷型芯坯体在烧结过程中产生的收缩。本发明解决了碳酸钙制备陶瓷型芯时产生较大收缩而导致陶瓷型芯的尺寸误差较大的问题。
Soluble ceramic core and preparation method and application thereof
一种可溶性陶瓷型芯及其制备方法与应用
JIANG WENMING (author) / YU XIAOPENG (author) / NIU YANQING (author) / PENG ZIWEI (author) / YANG ZHIYUAN (author) / YANG LI (author) / FAN ZITIAN (author)
2024-09-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B22C
FOUNDRY MOULDING
,
Gießformen
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
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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