Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of calcium oxide ceramic core for investment casting of titanium alloy thin-wall part
The invention relates to the field of titanium alloy precision casting, in particular to a preparation method of a calcium oxide ceramic core for investment casting of a titanium alloy thin-wall part. Raw materials for preparing the calcium oxide ceramic core comprise a plasticizer and calcium oxide powder formed by different particle size grading. The preparation method comprises the following steps: preparing the calcium oxide powder, preparing the plasticizer, mixing, pressing, sintering the core, dipping, sealing holes and re-sintering. The calcium oxide-based ceramic core prepared by the invention has the advantages of low sintering shrinkage rate, good dimensional precision, smooth surface, simple preparation process and low cost, and is especially suitable for industrial production. Pores in the surface of the calcium oxide mold core are filled with yttrium oxide, and a Y2O3 film is formed on the outer surface. In the shell making process of titanium alloy precision casting, the film can prevent the mold core from being in contact with water-containing paint to generate hydration collapse, so that the hydration resistance effect of calcium oxide is effectively improved.
本发明涉及钛合金精密铸造领域，尤其涉及一种钛合金薄壁件熔模铸造用氧化钙陶瓷型芯的制备方法。氧化钙陶瓷型芯制备原料包括增塑剂和不同粒度级配而成氧化钙粉体，制备步骤包括：氧化钙粉体制备、增塑剂制备、混料、压制、型芯烧结和浸渍封孔再烧结。本发明制备的氧化钙基陶瓷型芯烧结收缩率低，具备较好的尺寸精度，表面光滑，且制备工艺简单、成本较低，尤其适用于工业化生产。氧化钙型芯表面的孔隙由氧化钇填充，在外表面形成Y2O3薄膜。在钛合金精密铸造的制壳工序中，该薄膜可避免型芯接触含水涂料而发生水化溃散，从而有效提升氧化钙的抗水化效果。
Preparation method of calcium oxide ceramic core for investment casting of titanium alloy thin-wall part
The invention relates to the field of titanium alloy precision casting, in particular to a preparation method of a calcium oxide ceramic core for investment casting of a titanium alloy thin-wall part. Raw materials for preparing the calcium oxide ceramic core comprise a plasticizer and calcium oxide powder formed by different particle size grading. The preparation method comprises the following steps: preparing the calcium oxide powder, preparing the plasticizer, mixing, pressing, sintering the core, dipping, sealing holes and re-sintering. The calcium oxide-based ceramic core prepared by the invention has the advantages of low sintering shrinkage rate, good dimensional precision, smooth surface, simple preparation process and low cost, and is especially suitable for industrial production. Pores in the surface of the calcium oxide mold core are filled with yttrium oxide, and a Y2O3 film is formed on the outer surface. In the shell making process of titanium alloy precision casting, the film can prevent the mold core from being in contact with water-containing paint to generate hydration collapse, so that the hydration resistance effect of calcium oxide is effectively improved.
本发明涉及钛合金精密铸造领域，尤其涉及一种钛合金薄壁件熔模铸造用氧化钙陶瓷型芯的制备方法。氧化钙陶瓷型芯制备原料包括增塑剂和不同粒度级配而成氧化钙粉体，制备步骤包括：氧化钙粉体制备、增塑剂制备、混料、压制、型芯烧结和浸渍封孔再烧结。本发明制备的氧化钙基陶瓷型芯烧结收缩率低，具备较好的尺寸精度，表面光滑，且制备工艺简单、成本较低，尤其适用于工业化生产。氧化钙型芯表面的孔隙由氧化钇填充，在外表面形成Y2O3薄膜。在钛合金精密铸造的制壳工序中，该薄膜可避免型芯接触含水涂料而发生水化溃散，从而有效提升氧化钙的抗水化效果。
Preparation method of calcium oxide ceramic core for investment casting of titanium alloy thin-wall part
一种钛合金薄壁件熔模铸造用氧化钙陶瓷型芯的制备方法
WU GUOQING (Autor:in) / JI XINYANG (Autor:in) / HU HUAXIN (Autor:in) / SONG XIANGJIA (Autor:in) / LIU SHUANGQI (Autor:in) / DING WENZHAO (Autor:in)
14.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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