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Preparation method of high-temperature-resistant ceramic core for casting
The invention provides a preparation method of a high-temperature-resistant ceramic core for casting. The preparation method comprises the following steps: preparing a ternary mineralizer and a plasticizer; weighing white corundum powder and a ternary mineralizer according to a mass ratio, and carrying out ball milling; adding white corundum sand weighed according to a mass ratio into the ball-milled mixture, carrying out ball milling, and baking to obtain a mixed raw material; adding a plasticizer in a molten state into the mixed raw material under a heating condition; adding oleic acid, and continuously stirring to obtain ceramic slurry; preparing a ceramic core semi-finished product by adopting the ceramic slurry; roasting the ceramic core semi-finished product according to a multi-section temperature curve roasting method; and sequentially strengthening the roasted ceramic core semi-finished product by adopting a first strengthening agent and a second strengthening agent to obtain a ceramic core finished product. Tests show that the ceramic core prepared by the method disclosed by the invention cannot generate chemical reaction when being soaked in molten metal at the temperature of 1400 DEG C or above for a long time, the structure of the ceramic core is complete, and the condition of cracks or fractures cannot occur.
本发明提供了一种铸造用耐高温陶瓷型芯的制备方法，包括配置三元矿化剂和增塑剂；按质量比称取白刚玉粉和三元矿化剂进行球磨；向球磨后混合料中加入按质量比称取的白刚玉砂，进行球磨、烘烤后获得混合原料；将混合原料在加热条件下加入熔融状态的增塑剂；加入油酸，继续搅拌，获得陶瓷浆料；采用陶瓷浆料制备陶瓷型芯半成品；按多段式温度曲线焙烧方法对陶瓷型芯半成品焙烧；采用第一强化剂和第二强化剂依次对焙烧后的陶瓷型芯半成品强化，获得陶瓷型芯成品。采用本发明方法制备的陶瓷型芯，经测试其在1400℃以上温度的金属液中长时间浸泡时不会发生化学反应，陶瓷型芯的结构完整，且不会出现裂纹或断裂的情况。
Preparation method of high-temperature-resistant ceramic core for casting
The invention provides a preparation method of a high-temperature-resistant ceramic core for casting. The preparation method comprises the following steps: preparing a ternary mineralizer and a plasticizer; weighing white corundum powder and a ternary mineralizer according to a mass ratio, and carrying out ball milling; adding white corundum sand weighed according to a mass ratio into the ball-milled mixture, carrying out ball milling, and baking to obtain a mixed raw material; adding a plasticizer in a molten state into the mixed raw material under a heating condition; adding oleic acid, and continuously stirring to obtain ceramic slurry; preparing a ceramic core semi-finished product by adopting the ceramic slurry; roasting the ceramic core semi-finished product according to a multi-section temperature curve roasting method; and sequentially strengthening the roasted ceramic core semi-finished product by adopting a first strengthening agent and a second strengthening agent to obtain a ceramic core finished product. Tests show that the ceramic core prepared by the method disclosed by the invention cannot generate chemical reaction when being soaked in molten metal at the temperature of 1400 DEG C or above for a long time, the structure of the ceramic core is complete, and the condition of cracks or fractures cannot occur.
本发明提供了一种铸造用耐高温陶瓷型芯的制备方法，包括配置三元矿化剂和增塑剂；按质量比称取白刚玉粉和三元矿化剂进行球磨；向球磨后混合料中加入按质量比称取的白刚玉砂，进行球磨、烘烤后获得混合原料；将混合原料在加热条件下加入熔融状态的增塑剂；加入油酸，继续搅拌，获得陶瓷浆料；采用陶瓷浆料制备陶瓷型芯半成品；按多段式温度曲线焙烧方法对陶瓷型芯半成品焙烧；采用第一强化剂和第二强化剂依次对焙烧后的陶瓷型芯半成品强化，获得陶瓷型芯成品。采用本发明方法制备的陶瓷型芯，经测试其在1400℃以上温度的金属液中长时间浸泡时不会发生化学反应，陶瓷型芯的结构完整，且不会出现裂纹或断裂的情况。
Preparation method of high-temperature-resistant ceramic core for casting
一种铸造用耐高温陶瓷型芯的制备方法
LONG YUEWEN (author) / LI QIANG (author) / DENG JUAN (author) / JIANG ZHIPENG (author) / LUO WEIMING (author) / ZHANG CE (author) / ZHANG YONG (author) / TIAN YUFEI (author) / HU KUN (author) / TANG YAO (author)
2023-08-18
Patent
Electronic Resource
Chinese
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