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Quenching: Automatic Control of the Quenchant to Ensure the Process Quality
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Abstract
The heat treatment used in manufacturing process of automotive parts are very important, and among them, particularly the quenching of steels.
In this heat treatment the quenchant capacity of heat extration is a very critic parameter, and once specified, its cooling features must be preserved to ensure the maintenance of the mechanical properties of components, which will determine the project functionality and durability.
The best way to control the quenchant during quenching is through the continued control of the quenchant cooling curve of the and its respective cooling rate.
In this work was utilised a computer controlled data acquisition system, which allow in actual time, to get values of temperature and time during the cooling phenomena. This data are processed to give immediately values of the cooling rate.
This system is applied to different quenchants, such as: water, polymeric solutions and oils. Therefore, it gives the measurement repeatability and the different cooling features of each of these quenchants. These features may be exploited by the process engineers, to ensure the process repeatability and quality.
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Authors
Citation
de Campos Franceschini Canale, L., Canale, A., Crnkovic, O., Groessler, J. et al., "Quenching: Automatic Control of the Quenchant to Ensure the Process Quality," SAE Technical Paper 962376, 1996, https://doi.org/10.4271/962376.Also In
References
- BATES, C.E. Method for predicting quench severity effects on the properties of aluminium and steel alloys: I. Industrial Heating 19 23 1992
- RETI, T. et al Quantitative characterization of quenching performances Heat Treating 25 2 24 28 1993
- TOTTEN, G.E. et al How H. - factors can be used to characterize polymers Heat Treating 28 29 1989
- DAKINS, M. E. et al Estimating quench sverity with cooling curves Heat Treating 24 3.4 24 26 1992
- TENSI, H.M. STICH, A. Characterization of polymer quenchants Heat Treating 25 5 25 29 1993
- DAKINS, M.E et al Calculation of the grossman hardenability factor from quenchant cooling curites Metallurgia 56 12 1989
- TENSI, H.M. et al Fundamentals of quenching Metal Heat Treating 1995
- BODIN, J. SEGERBERG, S. Measurement and evaluation of the power of quenching media for hardening Heat Treating 20 15 23 1993
- SINYAVTSEV, G.D. et al Cooling kinetics and features of structure formation during hardening in polymeric quenching media Metal Science and Heat Treatment 31 9.10 687 689
- HILDER, N.A. A pump agitation system for assessing the cooling characcteristicas of quenchants Heat Treatment of Metals 12 63 68 1985
- LALLY, K.S. TOTTEN, G.E. Proper agitation dictates quench success Heat Treating 24 10 38 31 1992
- MASON, K.J. CAPEWELL, I. The effect of agitation on the quenching characteristics of oil and polymer Heat Treatment 13 4 99 103 1986
- BOYER, H.E. CARY, P.R. Quenching and control of distortion ASM Internationl Ohio 289 1988