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2 Archives of Foundry Engineering

2 2008

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Mechanism of impulse compacting of moulding sands

Mikulczyński T., Bogdan M., Ciskowski S., Dworzak Ł.

Archives of Foundry Engineering

2008

Vol. 8, iss. 1 spec.

211--214

A mathematical 3D model of impulse compaction process, developed in the Basic Automation Laboratory of the Institute of Production Engineering and Automation is presented. Experimental and simulation research analysis allowed to determine mechanism of impulse compacting of moulding sands. Mechanism and dynamics of this process evaluated on the grounds of relationships pc = f(t) representing time functions of total pressure in the sand layers located at different heights of the compacted sand column. Presented experimental and simulation research proved that developed 3D mathematical model of impulse compaction process of moulding sand describes this process in detail.

3D model of impulse compaction of moulding sands model

Ganczarek M., Ciskowski S., Mikulczyński T.

Archives of Foundry Engineering

2008

Vol. 8, iss. 1

47-50

A mathematical 3D model is presented, fully describing the impulse compaction process of moulding sands. The model is based on the models of the impulse head dynamics as well as of the deformation and compaction processes of moulding sand. The deformation and compaction processes were modelled on the grounds of the viscoelastic rheological model of moulding sand. It was found that knowing the and coefficients characterising viscous and elastic properties of moulding sand makes the necessary and sufficient condition for simulation testing of the developed model. The coefficients can be determined by ultrasonic testing of moulding sand. The simulation and experimental research of the impulse compaction process proved that the developed model describes the impulse compaction process very well.