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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Szymańska, Joanna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2020New Al2O3–Cu–Ni functionally graded composites manufactured using the centrifugal slip castingcitations
- 2020The influence of metal phase composition on microstructure and mechanical properties of Al2O3-Cu-Cr ceramic metal compositescitations
- 2018Determination of loamy resources impact on granulation of ceramic proppants and their propertiescitations
- 2018Characterization of Aluminosilicates and Verification of Their Impact on Quality of Ceramic Proppants Intended for Shale Gas Output
- 2017Assesment of Infrared Drying Time of Ceramic Shell Molds with use of Thermal Imaging Camera
- 2016Selecting key parameters of the green pellets and lightweight ceramic proppants for enhanced shale gas exploitationcitations
- 2016Rheological properties of alumina ceramic slurries for ceramic shell-mould fabricationcitations
- 2016Optimizing the Lightweight Ceramic Proppants Propertiescitations
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document
Assesment of Infrared Drying Time of Ceramic Shell Molds with use of Thermal Imaging Camera
Abstract
The investment casting technique, known as the Bridgman process, is commonly applied to production of complex geometrical parts of aerial engines made of nickel-based superalloys. Generating an appropriate ceramic shell mold is a crucial stage in the casting process. The basic materials suitable for the casting shells are powders and binders. A binder generally consists of nanocomposite with a polymer matrix containing nanoparticles of SiO2. The materials selected for particular shell molds layers have to reveal specific properties such as non-reactivity of the first layer surrounded by a molten metal, chemical purity and thermal resistance. In case of structural layers, it is required to apply materials with high a mechanical strength, gas permeability, creep resistance, high thermal conductivity and knock-out properties.The following research involves outcomes from the studies of received moulding materials.The microstructure analysis proceeded with Scanning Electron Microscopy. Particle size distribution was evaluated on the basis of laser diffraction technique. XRF and XRD analysis enabled identification ofthe powders’ chemical content and their phases. Moreover, a number of rheological properties of ceramic slurries(applied on industrial scale) such as dynamic viscosity, density, pH and adhesion toa brazen plate, were examined to verify their applicability for shell molds production.The critical stage determining time of the casting is a drying process. Nowadays, the ceramic shell molds, depending on selected materials, number of layers and drying conditions (temperature and moisture), are exposed to drying within 3-7 days. Implementation of infrared searchlight enabled reduction of drying time and thus the whole process which was monitored with use of the thermal imaging camera. The obtained results proved effectiveness of the infrared searchlight and usefulness of the camera as a device to control drying process of multilayer ceramic shell molds.