Comparison of layer thickness on materials produced by sol-gel transition on substrates removed from aqueous solutions of colloidal binders

This paper presents the method of investigating the sol-gel transition by constant speed removal of plates, made of suitable substrate, from an aqueous colloidal binder. The thickness of the deposited colloidal binder layer depends on the particle...

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Experimental verification of the simulation of centrifugal casting in ceramic moulds

This paper presents the results of work on the determination of actual molten metal flow in a mould during centrifugal casting in the SuperCast induction vacuum furnace manufactured by Linn HighTherm. The centrifugal casting process uses the effec...

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Building foundations for the diffusion mechanism of ceramic mould drying

An attempt was made to develop a mathematical model and apply this model in numerical analysis to the drying process of multi-layer ceramic moulds used in investment casting. The numerical analysis carried out in a FLOW-3D program was meant to ser...

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Development of a technology for the production of ceramic moulds with reduced thermal conductivity to control the solidification of thin-walled castings

During the project a technology of making ceramic moulds using aluminosilicate microspheres was developed. According to the developed technology, ceramic samples were used to determine thermal conductivity in the temperature range of 500°C to ...

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Evaluation of the structure of multi-layer ceramic moulds for internal discontinuities using the x-ray computed tomography method

This study presents the possibility of using x-ray computed tomography (CT) for the technological quality assessment of multi-layer ceramic moulds used in the precision casting process. Testing concepts were presented with regard to the detection ...

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