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Preparation method of casting runner pipe
The invention relates to the technical field of refractory materials, in particular to a preparation method of a cast runner pipe, which comprises the following steps: 1) preparing a wet material; 2) calcining the composite refractory aggregate and the modified bauxite, blending with viscose fiber, silicone resin, methyl cellulose and water, and aging for at least one week; and 3) carrying out tube extrusion molding on the aged pug to obtain a molded green body, drying, sintering, and carrying out furnace cooling to obtain the casting runner tube. According to the pouring gate pipe for casting, the added composite refractory aggregate has very good thermal shock resistance and can inhibit crack expansion and consume residual stress, so that the use performance of the pouring gate pipe for casting is improved, ceramic particles formed by the added modified bauxite during sintering are uniform in size and regular in arrangement, and the service life of the pouring gate pipe is prolonged. And compactness and flatness of the surface structure of the cast runner pipe are facilitated, the quality of castings is improved, the rejection rate is reduced, and therefore the requirements of the high-end casting technology can be better met.
本发明涉及耐火材料技术领域，具体涉及一种铸造浇道管的制备方法，包括1）湿料配制；2）将复合型耐火骨料和改性铝矾土煅烧后与粘胶纤维、硅酮树脂以及甲基纤维素、水进行共混，并陈腐至少一周；3）将陈腐后的泥料经挤管成型得到成型坯体，干燥后进行烧结，随炉冷却即得铸造浇道管。本发明中，添加的复合型耐火骨料具有很好的耐热震性，可以抑制裂纹的扩展和消耗残存应力，从而提高铸造用浇道管的使用性能，而且添加的改性铝矾土在烧结时铝矾土形成的陶瓷颗粒大小均匀，排列规整，有助于铸造浇道管表面结构的致密和平整，有助于提高铸件质量，减少废品率，从而可以更好的满足高端铸造工艺的需求。
Preparation method of casting runner pipe
The invention relates to the technical field of refractory materials, in particular to a preparation method of a cast runner pipe, which comprises the following steps: 1) preparing a wet material; 2) calcining the composite refractory aggregate and the modified bauxite, blending with viscose fiber, silicone resin, methyl cellulose and water, and aging for at least one week; and 3) carrying out tube extrusion molding on the aged pug to obtain a molded green body, drying, sintering, and carrying out furnace cooling to obtain the casting runner tube. According to the pouring gate pipe for casting, the added composite refractory aggregate has very good thermal shock resistance and can inhibit crack expansion and consume residual stress, so that the use performance of the pouring gate pipe for casting is improved, ceramic particles formed by the added modified bauxite during sintering are uniform in size and regular in arrangement, and the service life of the pouring gate pipe is prolonged. And compactness and flatness of the surface structure of the cast runner pipe are facilitated, the quality of castings is improved, the rejection rate is reduced, and therefore the requirements of the high-end casting technology can be better met.
本发明涉及耐火材料技术领域，具体涉及一种铸造浇道管的制备方法，包括1）湿料配制；2）将复合型耐火骨料和改性铝矾土煅烧后与粘胶纤维、硅酮树脂以及甲基纤维素、水进行共混，并陈腐至少一周；3）将陈腐后的泥料经挤管成型得到成型坯体，干燥后进行烧结，随炉冷却即得铸造浇道管。本发明中，添加的复合型耐火骨料具有很好的耐热震性，可以抑制裂纹的扩展和消耗残存应力，从而提高铸造用浇道管的使用性能，而且添加的改性铝矾土在烧结时铝矾土形成的陶瓷颗粒大小均匀，排列规整，有助于铸造浇道管表面结构的致密和平整，有助于提高铸件质量，减少废品率，从而可以更好的满足高端铸造工艺的需求。
Preparation method of casting runner pipe
一种铸造浇道管的制备方法
ZHU XIAOMING (author) / ZHU HONGCHENG (author) / XU PENG (author) / XU CHENG (author) / XU YINHUI (author)
2024-05-07
Patent
Electronic Resource
Chinese
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