POROSITY ANALYSIS OF MULTILAYER CERAMIC MOULDS USED IN INVESTMENT CASTING OF AIRCRAFT ENGINE PARTS

1 ŻABA Krzysztof
Co-authors:
2 GRACZ Dawid 3 ZYCH Łukasz 4 KSIĄŻEK Marzanna 5 MIZERA Jarosław
Institutions:
1 AGH University of Science and Technology, Cracow, Poland, EU, krzyzaba@agh.edu.pl
2 AGH University of Science and Technology, Cracow, Poland, EU, graczdaw@student.agh.edu.pl
3 AGH University of Science and Technology, Cracow, Poland, EU, lzych@agh.edu.pl
4 AGH University of Science and Technology, Cracow, Poland, EU, mksiazek@agh.edu.pl
5 Warsaw University of Technology, Warsaw, Poland, EU, jmizera@inmat.pw.edu.pl
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1551-1556
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
12 views / 3 downloads
Abstract

Computed Tomography (CT) as a known medical research method is nowadays widely used in research institutions and production companies. Due to its nondestructive testing nature, CT finds application in both final product quality control such as castings or CNC machined parts and research of new materials, e.g. ceramics, composites etc. In aviation industry, one of the main factors in investment casting, crucial to quality of final product are properties and condition of ceramic moulds. Inspection is possible only after filling mould with molten alloy and breaking it after metal solidification. The purpose of article is to examine application of computed tomography in ceramic casting moulds quality control and investigation of certain ceramic pulp components effects on mold porosity and voids characteristics. Specimens in shapes of casting moulds were prepared. Samples were produced using quartz, molochite and various binders. They were examined with micro CT tomography. Test results were presented as high quality 3D models and 2D CT slices of specimens and percentage porosity. As a comparative method of obtaining porosity data, mercury porosimetry tests were carried out.

Keywords: Porosity, ceramic mould, computed tomography
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