Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses an aluminum oxide porous cover which comprises the following components in percentage by mass (wt%): 20-90% of aluminum oxide hollow spheres, 5-40% of high-aluminum micro powder, 5-30% of silicon micro powder and 2-10% of a binder. The invention also provides a preparation method of the aluminum oxide porous cover, which comprises the following operation steps: S1, mixing the aluminum oxide hollow spheres, the high-aluminum micro powder and the silicon micro powder according to a certain proportion, adding a proper amount of binder, uniformly mixing, granulating, and carrying out compression molding to obtain an aluminum oxide porous cover green body; and S2, drying the alumina porous cover green body at 50-120 DEG C for 2-4 hours, slowly heating to 500-800 DEG C, discharging glue, slowly heating to 1500-1650 DEG C, sintering for 2-4 hours, and naturally cooling to room temperature along with a furnace to obtain the alumina porous cover finished product. The invention further provides a molten steel hydrogen determination probe comprising the aluminum oxide porous cover. According to the invention, the air permeability of the alumina porous cover can be improved to 60% or more, and the alumina porous cover can be kept for a longer time in a measurement state.
本发明公开了一种氧化铝多孔罩，按质量分数（wt%）计包括如下组分：氧化铝空心球20～90，高铝微粉5～40，硅微粉5～30，粘结剂2～10。本发明还提供一种氧化铝多孔罩的制备方法，包括如下操作步骤：S1、将氧化铝空心球、高铝微粉及硅微粉以一定比例混合后，加入适量的粘结剂，经混匀、造粒后压制成型，制得氧化铝多孔罩生坯；S2、将氧化铝多孔罩生坯于50～120℃下干燥2～4小时，再缓慢升温至500～800℃下排胶，然后缓慢升温至1500～1650℃后烧结2～4小时，再随炉自然冷却至室温，制得氧化铝多孔罩成品。本发明还提供一种含有上述氧化铝多孔罩的钢水定氢探头；本发明可以使其中的氧化铝多孔罩透气率提高至60%以上，并能在测量状态下坚持更长时间。
The invention discloses an aluminum oxide porous cover which comprises the following components in percentage by mass (wt%): 20-90% of aluminum oxide hollow spheres, 5-40% of high-aluminum micro powder, 5-30% of silicon micro powder and 2-10% of a binder. The invention also provides a preparation method of the aluminum oxide porous cover, which comprises the following operation steps: S1, mixing the aluminum oxide hollow spheres, the high-aluminum micro powder and the silicon micro powder according to a certain proportion, adding a proper amount of binder, uniformly mixing, granulating, and carrying out compression molding to obtain an aluminum oxide porous cover green body; and S2, drying the alumina porous cover green body at 50-120 DEG C for 2-4 hours, slowly heating to 500-800 DEG C, discharging glue, slowly heating to 1500-1650 DEG C, sintering for 2-4 hours, and naturally cooling to room temperature along with a furnace to obtain the alumina porous cover finished product. The invention further provides a molten steel hydrogen determination probe comprising the aluminum oxide porous cover. According to the invention, the air permeability of the alumina porous cover can be improved to 60% or more, and the alumina porous cover can be kept for a longer time in a measurement state.
本发明公开了一种氧化铝多孔罩，按质量分数（wt%）计包括如下组分：氧化铝空心球20～90，高铝微粉5～40，硅微粉5～30，粘结剂2～10。本发明还提供一种氧化铝多孔罩的制备方法，包括如下操作步骤：S1、将氧化铝空心球、高铝微粉及硅微粉以一定比例混合后，加入适量的粘结剂，经混匀、造粒后压制成型，制得氧化铝多孔罩生坯；S2、将氧化铝多孔罩生坯于50～120℃下干燥2～4小时，再缓慢升温至500～800℃下排胶，然后缓慢升温至1500～1650℃后烧结2～4小时，再随炉自然冷却至室温，制得氧化铝多孔罩成品。本发明还提供一种含有上述氧化铝多孔罩的钢水定氢探头；本发明可以使其中的氧化铝多孔罩透气率提高至60%以上，并能在测量状态下坚持更长时间。
Alumina porous cover, preparation method thereof and molten steel hydrogen determination probe containing alumina porous cover
一种氧化铝多孔罩及其制备方法及含其的钢水定氢探头
TIAN LU (Autor:in)
15.10.2024
Patent
Elektronische Ressource
Chinesisch
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