In:
Materials Science Forum, Trans Tech Publications, Ltd., Vol. 1035 ( 2021-06-22), p. 833-839
Abstract:
The mould temperature distribution has a great influence on the semi-solid diecasting. In the present study the temperature distribution of a plane-shaped mould was investigated by using the method of numerical simulation and experiment. The results showed that the preheating mould temperature field was affected by three important simulation parameters, the heat transfer coefficient h oil between the heat transfer oil and the mould, the heat transfer coefficient h air between the mould and the air, and the heat transfer coefficient h contact between the mould core and the mould frame. The simulation results showed that (1) with the increase of h oil , the overall mould temperature imcreased; (2) with the increase of h air , the overall mould temperature decreased, while the surface temperature gradient of mould frame grad T -f and the temperature difference between the mould core and the mould frame ∆T increased; (3) With the increase of h contact , ∆T decreased and the temperature of mould frame increased. When the heat oil temperature T oil =290°C, the heat transfer coefficients were optimized as h oil =500Wm -2 K -1 , h air =7Wm -2 K -1 , and h contact =1000Wm -2 K -1 according to the experimental results. The average temperature difference between the simulation result and the experimental result was 3.45°C, and the average relative error was 1.73%.
Type of Medium:
Online Resource
ISSN:
1662-9752
DOI:
10.4028/www.scientific.net/MSF.1035
DOI:
10.4028/www.scientific.net/MSF.1035.833
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2021
detail.hit.zdb_id:
2047372-2
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