TURBINE WHEEL CASTING POURING PROCESS PARAMETERS IMPROVEMENT

1 VEVERKOVA Jarmila
Co-authors:
1 DONOCIKOVA Eva 1 VOZNAKOVA Iveta
Institution:
1 VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU eva.oulehlova@boschrexroth.cz, j.sn@seznam.cz, iveta.voznakova@vsb.cz
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
2112-2117
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
413 views / 237 downloads
Abstract

Mechanical characteristics of the creep-resisting alloy IN 713 LC depends on its content and material purity, furthermore on the structure and structural non-homogeneities. Significant influence on the material properties, for its usage, has the way of crystallization, modification of the grain structure secured by technological setup of the casting tree and special directed insulation of the tree.The aim was to realize the tests on the samples to achieve definition of casting process and sequential detail grain structure study of the directed solidified castings with higher mechanical properties at higher temperature. The samples were analyzed by RTG and FPI method and cut for additional testing. Interesting data were obtained in these areas: grain size and structure with dependence to the casting temperature, the shell annealing temperature and insulation by ceramic wool – Sibral, on the specified places defined with the insulation thickness to ensure surface controlled crystallization in the casting. Part of the study was aimed to cost reduction during process and definition of the necessary technological changes to reach profitability of the product.

Keywords: Turbine wheel, wax model, IN713LC, casting

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Scroll to Top