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Preparation method of mold bottom brick for high-temperature alloy steel ingot mold
The invention belongs to the technical field of refractory materials, and particularly relates to a preparation method of a mold bottom brick for a high-temperature alloy steel ingot mold. The mold bottom brick is uniformly coated with a coating with the thickness of 0.5-1 mm. The preparation method of the mold bottom brick comprises the following steps: (1) preparing the mold bottom brick and a coating smeared on the mold bottom brick; and (2) uniformly smearing the prepared coating on the use surface of the mold bottom brick, putting the mold bottom brick coated with the coating in a heatingfurnace with the use surface facing upwards for baking, and conducting drying to obtain a finished mold bottom brick. The mold bottom brick is prepared from fine powder particles through hot pressing, and is high in impact resistance and good in hot corrosion resistance; and the coating is prepared from powder particles with the particle size smaller than 1 micron, a coating layer is smoother andmore compact, and due to the use of the coating layer, the mold bottom brick is more resistant to molten steel impact, refractory materials are not prone to being scoured by molten steel, and brick sticking is not prone to happening in the demolding process. Compared with a traditional mold bottom brick, the strength of the prepared mold bottom brick is greatly improved, and the cleanliness of cast high-temperature alloy is higher.
本发明属于耐火材料技术领域，特别涉及一种高温合金钢锭模用模底砖的制备方法。本发明的模底砖上均匀地涂覆有厚度为0.5~1mm涂料，模底砖的制备方法包括以下步骤：（1）制备模底砖和涂覆在模底砖上的涂料；（2）将制备的涂料均匀地涂覆在模底砖的使用面上，并将涂覆有涂料的模底砖使用面朝上置于加热炉内烘烤，烘干后制得成品模底砖。本发明的模底砖由细小的粉末颗粒热压制得，抗冲击能力强，耐热腐蚀性能好；涂料是由粒径小于1μm的粉末颗粒制得，涂层更加光滑、紧致，涂层的使用使得模底砖更加耐钢液冲击，不易被钢液冲刷起耐火材料，在脱模的过程中不易粘砖；制备的模底砖较传统模底砖在强度上有较大提升，浇铸出来的高温合金洁净度更高。
Preparation method of mold bottom brick for high-temperature alloy steel ingot mold
The invention belongs to the technical field of refractory materials, and particularly relates to a preparation method of a mold bottom brick for a high-temperature alloy steel ingot mold. The mold bottom brick is uniformly coated with a coating with the thickness of 0.5-1 mm. The preparation method of the mold bottom brick comprises the following steps: (1) preparing the mold bottom brick and a coating smeared on the mold bottom brick; and (2) uniformly smearing the prepared coating on the use surface of the mold bottom brick, putting the mold bottom brick coated with the coating in a heatingfurnace with the use surface facing upwards for baking, and conducting drying to obtain a finished mold bottom brick. The mold bottom brick is prepared from fine powder particles through hot pressing, and is high in impact resistance and good in hot corrosion resistance; and the coating is prepared from powder particles with the particle size smaller than 1 micron, a coating layer is smoother andmore compact, and due to the use of the coating layer, the mold bottom brick is more resistant to molten steel impact, refractory materials are not prone to being scoured by molten steel, and brick sticking is not prone to happening in the demolding process. Compared with a traditional mold bottom brick, the strength of the prepared mold bottom brick is greatly improved, and the cleanliness of cast high-temperature alloy is higher.
本发明属于耐火材料技术领域，特别涉及一种高温合金钢锭模用模底砖的制备方法。本发明的模底砖上均匀地涂覆有厚度为0.5~1mm涂料，模底砖的制备方法包括以下步骤：（1）制备模底砖和涂覆在模底砖上的涂料；（2）将制备的涂料均匀地涂覆在模底砖的使用面上，并将涂覆有涂料的模底砖使用面朝上置于加热炉内烘烤，烘干后制得成品模底砖。本发明的模底砖由细小的粉末颗粒热压制得，抗冲击能力强，耐热腐蚀性能好；涂料是由粒径小于1μm的粉末颗粒制得，涂层更加光滑、紧致，涂层的使用使得模底砖更加耐钢液冲击，不易被钢液冲刷起耐火材料，在脱模的过程中不易粘砖；制备的模底砖较传统模底砖在强度上有较大提升，浇铸出来的高温合金洁净度更高。
Preparation method of mold bottom brick for high-temperature alloy steel ingot mold
一种高温合金钢锭模用模底砖的制备方法
WANG QI (author) / RONG WENKAI (author) / LI CHENGLONG (author) / WANG YUKUI (author) / LI QING (author) / ZHONG YUGUO (author) / PU YILONG (author) / WANG SHIPU (author) / ZHAO CHANGHONG (author)
2020-12-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
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Casting ingot mold stools in chill molds
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