Melting furnace (induction heating)｜Dai-ichi kiden, expert of high-frequency induction heating and hot press, induction heating apparatus

No crucible, so

Reduce contamination to the limit

High-purity crystal growing

Description

Floating melting is a production method used to obtain high-purity conductive materials. It involves applying high-frequency output to conductive materials for heating and melting, while suspending the material using the frequency and eddy currents generated by a high-frequency induction heating power supply.

Floating melting techniques include cold crucible melting and levitation melting.

Feature

• No crucible, so no impurities are mixed in from the crucible wall. 
• No crucible, so cost of consumables reduces. 
• No reaction with the crucible material, so fluxes with a wide variety of ingredients and compositions can be used. 
• Promote the refining reaction of metals by utilizing the active stirring force of the molten metal by electromagnetic force. 
• Easy melting of high-purity metals and refractory metals

Cold crucible melt

This melting method has a water-cooled copper crucible inside the work coil, and a conductor is placed in it to heat it.

When the power of high-frequency induction heating is applied to the work coil, an eddy current opposite to that of the work coil is generated in the water-cooled crucible.

The eddy current of the work coil is applied to the conductive material and heating and melting proceed, but the eddy current of the copper rut and the electromagnetic repulsive force of the eddy current of the work coil act to float.

Levitation melting

Application

◆ Oxide crystals

◆ High-purity metals and alloys

◆ Silicon 

Specification

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