A new method of measuring thermal contact conductance

The measurement of thermal contact conductance between forging work-material and tools is of interest to the assessment of temperature-change induced component-form errors derived during metal-forming operations and also to tool-life. Methods of measurement of the thermal contact conductance are rev...

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Bibliographic Details
Published in:Journal of materials processing technology 2004-01, Vol.145 (2), p.207-214
Main Authors: Rosochowska, M, Chodnikiewicz, K, Balendra, R
Format: Article
Language:English
Subjects:
Heat transfer across tool materials
Thermal conductivity
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Summary:The measurement of thermal contact conductance between forging work-material and tools is of interest to the assessment of temperature-change induced component-form errors derived during metal-forming operations and also to tool-life. Methods of measurement of the thermal contact conductance are reviewed and evaluated and a new steady-state methodology and equipment for the measurement of conductance are proposed. Experiments were conducted on thin cylindrical specimens retained under axial pressure between two tool surfaces. A clear advantage of this method is the ability to measure the conductance under continuously sustained thermal conditions and under pressures in excess of the yield strength of the work-material. Experimental results are provided and experimental errors are defined.
ISSN:0924-0136
DOI:10.1016/S0924-0136(03)00671-X