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Preparation method of CaO crucible for vacuum induction melting of Ti alloy
The invention discloses a preparation method of a CaO crucible for vacuum induction melting of Ti alloy, and belongs to the technical field of preparation of high-temperature refractory materials. The raw material of the CaO crucible is high-purity CaO, the content of CaO is larger than or equal to 98 wt.%, the content of SiO2 is smaller than or equal to 0.2 wt.%, and absolute ethyl alcohol or diethyl ether is adopted as a binder. The method comprises the following steps: adding a binder accounting for 0-0.5% of the total weight of calcium oxide into a high-purity CaO mixture, uniformly mixing the ingredients, and forming a crucible blank by adopting cold isostatic pressing; and slowly heating the crucible blank to 1650-1750 DEG C, sintering, and slowly cooling to obtain the CaO crucible. The CaO crucible prepared by the method has the characteristic of good thermodynamic stability, and a smelting experiment test shows that the CaO crucible can be used for vacuum induction smelting of Ti alloy.
本发明公开了一种真空感应熔炼Ti合金的CaO坩埚的制备方法，属于高温耐火材料制备技术领域。本发明所用CaO坩埚原料为高纯CaO，其中CaO含量≥98wt.％，且SiO2含量≤0.2wt.％，采用无水乙醇或乙醚作为粘结剂。在高纯CaO混中加入占氧化钙总重量0‑0.5％粘结剂，配料混合均匀后，采用冷等静压成型坩埚毛坯。将坩埚毛坯件缓慢加热至1650～1750℃温度下烧结，缓慢冷却后得到CaO坩埚。本方法制得的CaO坩埚具有热力学稳定性好的特点，熔炼实验测试表明，该CaO坩埚可以用于真空感应熔炼Ti合金。
Preparation method of CaO crucible for vacuum induction melting of Ti alloy
The invention discloses a preparation method of a CaO crucible for vacuum induction melting of Ti alloy, and belongs to the technical field of preparation of high-temperature refractory materials. The raw material of the CaO crucible is high-purity CaO, the content of CaO is larger than or equal to 98 wt.%, the content of SiO2 is smaller than or equal to 0.2 wt.%, and absolute ethyl alcohol or diethyl ether is adopted as a binder. The method comprises the following steps: adding a binder accounting for 0-0.5% of the total weight of calcium oxide into a high-purity CaO mixture, uniformly mixing the ingredients, and forming a crucible blank by adopting cold isostatic pressing; and slowly heating the crucible blank to 1650-1750 DEG C, sintering, and slowly cooling to obtain the CaO crucible. The CaO crucible prepared by the method has the characteristic of good thermodynamic stability, and a smelting experiment test shows that the CaO crucible can be used for vacuum induction smelting of Ti alloy.
本发明公开了一种真空感应熔炼Ti合金的CaO坩埚的制备方法，属于高温耐火材料制备技术领域。本发明所用CaO坩埚原料为高纯CaO，其中CaO含量≥98wt.％，且SiO2含量≤0.2wt.％，采用无水乙醇或乙醚作为粘结剂。在高纯CaO混中加入占氧化钙总重量0‑0.5％粘结剂，配料混合均匀后，采用冷等静压成型坩埚毛坯。将坩埚毛坯件缓慢加热至1650～1750℃温度下烧结，缓慢冷却后得到CaO坩埚。本方法制得的CaO坩埚具有热力学稳定性好的特点，熔炼实验测试表明，该CaO坩埚可以用于真空感应熔炼Ti合金。
Preparation method of CaO crucible for vacuum induction melting of Ti alloy
一种真空感应熔炼Ti合金的CaO坩埚的制备方法
CHEN BO (author) / QIAN KUN (author) / SONG QINGZHONG (author) / ZHA XIANGDONG (author) / LIU KUI (author)
2021-09-28
Patent
Electronic Resource
Chinese
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