Method and device for controlling the proportion of crystals in a liquid-crystal mixture
AssigneeAleris Switzerland GmbH c/o K+P Treuhangesellschaft
InventorPaul Alexander De Vries
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Abstract
The invention relates to a method for controlling the proportion of aluminum crystals in a mixture of molten aluminum alloy and aluminum crystals. The electrical resistance of the mixture is determined with the aid of a four-point measurement. With the aid of the measured electrical resistance, the proportion of crystals in the mixture can be kept constant within narrow margins. The invention also relates to a device for carrying out the method.
Claims14
A method comprises controlling the proportion of aluminum crystals in a mixture of molten aluminum alloy and aluminum crystals, by determining at least the electrical resistance of the mixture with the aid of a four-point measurement.
A method controlling the proportion of aluminum crystal in a mixture of molten aluminum alloy and aluminum crystals, comprising:
- introducing the mixture into a vessel;
- regulating the temperature of the contents of the vessel;
- passing a current through the mixture with two electrodes of a four-point ohmmeter;
- measuring a voltage with two electrodes of the four-point ohmmeter to control the proportion of aluminum crystal in a mixture of molten aluminum alloy and aluminum crystals.
Dependencies are inferred from the claim text.