Development and technology overview of a fluid flow sensor (sonde) for commercial quench tanks

H. M. Tensi, G. E. Totten, G. M. Webster, M. Meindl, K. Lainer:
DEVELOPMENT AND TECHNOLOGY OVERVIEW OF A FLUID FLOW SENSOR (SONDE) FOR COMMERCIAL QUENCH TANKS

Proceedings of the 8th Seminar of the International Federation for Heat Treatment and Surface Engineering , IFHTSE 2001, Dubrovnik- Cavtat, Croatia, 12 – 14 September 2001.

ABSTRACT:
Due to the occurrence of complex fluid flow patterns in a quench tank which will significantly impact hardening results, it is important to develop a compact flow measuring device.  A typical quench process involves immersing austenitized steel into a quench bath which affects the circulation of the fluid and results in non-uniform flow and thermal striations in the quenchant.  This non-uniformity of fluid flow patterns therefore results in variations of heat transfer and subsequent inconsistent hardening of the parts.
In this paper, the principles and development of a flow probe to detect non-uniform flow in a quench tank is described.


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