Manufacture of Ceramic Molds and Cores from Inorganic Materials Using Permanent

The paper describes the technology for the manufacture of ceramic molds and cores from inorganic materials using permanent masters. A technique for reinforcing molds and cores using ceramic tubes is proposed. The effect of pulse currents of different power on the slurry has been studied. In the expe...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-11, Vol.969 (1), p.12070
Main Authors: Znamenskii, L G, Ivochkina, O V, Stepanova, T V
Format: Article
Language:English
Subjects:
Casting defects
Ceramic mold casting
Ceramic molding materials
Ceramics
Indicators
Inorganic materials
Investment castings
Mechanical properties
Molding materials
Power consumption
Tetraethyl orthosilicate
Tubes
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Summary:The paper describes the technology for the manufacture of ceramic molds and cores from inorganic materials using permanent masters. A technique for reinforcing molds and cores using ceramic tubes is proposed. The effect of pulse currents of different power on the slurry has been studied. In the experimental part, the performed experiments and the data obtained are described. In contrast to the conventional Show-process based on ethyl silicate binder (basic option), the technology developed for the manufacture of ceramic molds from inorganic materials ensures improving the quality and economic and environmental efficiency of investment castings. The quality improvement is determined by improved physical and mechanical characteristics of ceramic molds and the stable ceramic cracking. The improvement in environmental indicators is ensured by using safe inorganic molding materials and eliminating the solvent burning. Improving economic indicators is determined by reducing power consumption for calcining ceramic molds, casting defects, and molding material costs. Thus, the technology developed allows improving the quality of investment castings manufactured for the country's oil and gas complex.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/969/1/012070