Influence of Eccentric Arrangement of the Die for the Temperature Distribution in the Sample during the Pressure-Assisted Induction Sintering (PAIS)

Abstract:

In this work, the pressure-assisted induction sintering (PAIS) method, is being presented. The specimens (a cylindrical shape, diameter of 50 mm, height of 10 mm) was heated by a induction coil with heating speed of about 220 K/s to temperature 800°C, 850oC, 900oC, 950oC and 1000oC. During this process, the temperature of specimen was measured by five thermocouples (Φ 0.5 mm) which were located into graphite punch with sampling frequency of 2 Hz. Firstly, the die with specimen was located in the center of the coil. Next, the die was located out of the coil center (1 and 2 cm in four directions) and heated again. The analyzed samples show a difference of heat flow in the specimens. The studies also showed the difference between the temperature at the surface of the matrix (measured by a pyrometer) and the temperature of the sample (measured by a thermocouples). Two types of thermocouples placement were tested, parallel and perpendicular to the door of the vacuum chamber. In addition, an analysis of the temperature distribution along the diameter of the sample was performed.

• Periodical: Key Engineering Materials (Volumes 622-623)
• Pages: 514-524
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.622-623.514
• Online since: September 2014
• Authors: Dariusz Siemiaszko*, Marek Szykut

References

[1] D. L. Loveless, R. L. Cook, V. I. Rudnev, Current trends in the technology of induction heat treatment in the USA, Metal Science and Heat Treatment, 43 (2001) 215-219.

DOI: 10.1023/a:1012365827664

[2] W. Hermel, G. Leitner, R. Krumphold, Rewiew of induction sintering: fundamentals and applications, Powder Metallurgy, 3 (1980) 130-135.

DOI: 10.1179/pom.1980.23.3.130

[3] R. Rudolf, P. Mitschang, M. Neitzel, Induction heating of continuous carbon-fibre-reinforced thermoplastics, Composites, A 31 (2000) 1191–1202.

DOI: 10.1016/s1359-835x(00)00094-4

[4] Yu. N. Gafo, I. A. Sosnovski, Thermal parameters for centrifugal induction sintering of powder coatings, Powder Metallurgy and Metal Ceramics, 48 (2009) 105-111.

DOI: 10.1007/s11106-009-9087-x

[5] M. Frauenhofer, T. Ströhlein, S. Fabig, S. Böhm, L. Herbeck, K. Dilger, Induction technique in manufacturing performs, Mechanics of Composite Materials, 44 (2008) 523-530.

DOI: 10.1007/s11029-008-9040-y

[6] R. Niedbała, M. Wesołowski, Criterions for selection of volume induction heating parameters.

[7] K. Hwan-Cheol, K. Dong-Ki, W. Kee-Do, K. In-Yong, S. In-Jin, Consolidation of binderless WC–TiC by high frequency induction heating sintering, International Journal of Refractory Metals & Hard Materials, 26 (2008) 48–54.

DOI: 10.1016/j.ijrmhm.2007.01.006

[8] K. In-Yong, J. Seung-Hoon, D. Jung-Mann, Y. Jin-Kook, S. In-Jin, Rapid consolidation of nanostructured FeAl compound by high frequency induction heating and its mechanical properties, Journal of Alloys and Compounds, 496 (2010) L1–L3.

DOI: 10.1016/j.jallcom.2010.01.148

[9] S. In-Jin, J. In-Kyoon, K. In-Yong, D. Jung-Mann, W. Kee-Do, Sintering behavior and mechanical properties of WC–10Co, WC–10Ni and WC–10Fe hard materials produced by high-frequency induction heated sintering, Ceramics International 35 (2009).

DOI: 10.1016/j.ceramint.2007.11.003

[10] D. Siemiaszko, S. Jóźwiak, M. Czarnecki, Z. Bojar, Influence of temperature during pressure-assisted induction sintering (PAIS) on structure and properties of the Fe40Al intermetallic phase, Intermetallics 41 (2013) 16-21.

DOI: 10.1016/j.intermet.2013.03.015