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A platform for research: civil engineering, architecture and urbanism
Easily-collapsible ceramic core for precision casting and preparation method thereof
The invention provides an easily-collapsible ceramic core for precision casting and a preparation method thereof. The preparation method comprises the following steps: preparing fused quartz powder, sodium bentonite, lignin fibers as additives, potassium titanate whiskers and water-soluble ammonium salt as raw materials, carrying out dry mixing, adding silica sol, performing strong stirring to obtain mixed slurry, injecting the mixed slurry into a shell cavity coated with a surface layer and the at least one back layer, and standing and curing to finish the process. In the curing molding process, exothermic reaction is avoided, the high-temperature strength is high, the collapsibility is good, the cost is low, and the investment casting molding requirements of hollow castings made of various metal materials can be met.
一种精密铸造用易溃散陶瓷型芯及其制备方法，通过配制熔融石英粉、钠基膨润土、作为添加物的木质素纤维和钛酸钾晶须、水溶性铵盐的原料并进行干混后加入硅溶胶，经强力搅拌得到混合浆料并注入到已经涂挂了面层和至少一层背层的型壳空腔中，待静置固化后完成。本发明固化成型过程中无放热反应，高温强度高，溃散性好，且成本低廉，可以满足多种金属材料的空心铸件熔模铸造成型需求。
Easily-collapsible ceramic core for precision casting and preparation method thereof
The invention provides an easily-collapsible ceramic core for precision casting and a preparation method thereof. The preparation method comprises the following steps: preparing fused quartz powder, sodium bentonite, lignin fibers as additives, potassium titanate whiskers and water-soluble ammonium salt as raw materials, carrying out dry mixing, adding silica sol, performing strong stirring to obtain mixed slurry, injecting the mixed slurry into a shell cavity coated with a surface layer and the at least one back layer, and standing and curing to finish the process. In the curing molding process, exothermic reaction is avoided, the high-temperature strength is high, the collapsibility is good, the cost is low, and the investment casting molding requirements of hollow castings made of various metal materials can be met.
一种精密铸造用易溃散陶瓷型芯及其制备方法，通过配制熔融石英粉、钠基膨润土、作为添加物的木质素纤维和钛酸钾晶须、水溶性铵盐的原料并进行干混后加入硅溶胶，经强力搅拌得到混合浆料并注入到已经涂挂了面层和至少一层背层的型壳空腔中，待静置固化后完成。本发明固化成型过程中无放热反应，高温强度高，溃散性好，且成本低廉，可以满足多种金属材料的空心铸件熔模铸造成型需求。
Easily-collapsible ceramic core for precision casting and preparation method thereof
精密铸造用易溃散陶瓷型芯及其制备方法
LI FEI (author) / LI ZHENFENG (author) / MA XIN (author) / YI CHUSHAN (author) / ZHANG HAILONG (author) / ZHAO HUI (author) / WANG DONGHONG (author) / SUN BAODE (author)
2020-12-15
Patent
Electronic Resource
Chinese
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