Comparative analysis of temperature control systems for high pressure die casting dies

Numerical methods for the thermal analysis of the HPDC process are needed to shorten the cost, the design and production time and the samples to involve in finding acceptable operating conditions.

Newsletter EnginSoft Year 13 n°1

By Paolo Callegaro, Università di Padova | Giampietro Scarpa, EnginSoft

Numerical methods for the thermal analysis of the HPDC process are needed

Abstract

In High Pressure Die Casting production it is necessary to keep the die temperature within a certain specified range for the following basic reasons:

Ensure that the casting solidifies progressively from the opposite part to the running systems, in order to reduce much more as possible the porosity.
Reduce hot spots and make the die more isothermal.
Modify the grain size and microstructure to improve mechanical properties.
Increasing the die life time.

Working with a die at excessively low temperature there will be problems like premature solidification and incomplete filling of the die cavity, difficult ejection due to increase of shrink force and in consequence of high thermal gradients, rapid die wear, thermal shock of the die surface and also formation of cold shuts.

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