Channel-Type Induction Furnaces (RWK)
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... for holding cast iron Channel-Type Induction Furnaces (RWK)

I Fields of application for OTTO JUNKER channel-type induction furnaces Typical applications ■ liquid metal must be held, stored, superheated or poured in large quantities, ■ moulding lines require continually varying amounts of metal which must nevertheless be kept available at all times to maximise moulding line efficiency, ■ a collecting vessel is required to facilitate the production of large castings, ■ efficiency of melting and moulding equipment is to be maximised with a simultaneous increase in productivity without the need of holding molten metal at temperature in the melting...

I Advantages of the channel-type induction furnace ► Charging of a channel furnace by means of a crane ladle. ■ Proven, reliable and rugged design ■ Separate filling and pouring siphons ► Furnace filling and pouring operations may proceed at the same time ► No ingress of atmospheric oxygen, i.e., slag formation is reliably prevented ■ Creation of buffer capacity for disruptions in melting and moulding operation, thus keeping a molten metal reserve available for times of peak demand from the moulding line ■ Quickly replaceable, water-cooled inductors are available with: ► single loop up to...

OTTO JUNKER high-power inductors High-power inductors consist of one or two coils, a magnetic core, and an inductor casing. They are attached to the furnace vessel via a water-cooled flange. 4 All parts subject to high thermal stress are watercooled, i.e. inductor flange, casing, cooling shells and induction coils as well as the furnace flange. Inductors are designed to deliver the required power, i.e.: < single-loop inductors up to 1,200 kW < double-loop inductors from 1,200 to 2,800 kW 1 Optimised double-loop inductor ensures “directed flow” 2 Refractory lining 3 Full-size yokes of...

Two methods of powering the inductor Mains-frequency switchgear system This proven technology essentially consists of a tapchanging transformer and a switchgear system with automatic PLC-controlled phase balancing and power factor correction. Benefits of this design < Power factor (cos phi): 0.99 - 1.0 < Minimum mains pollution < Air-cooled switchgear system Mains-frequency switchgear system IGBT frequency converter This advanced technology relies on an IGBT frequency converter consisting of a 6, 12 or 24-pulse rectifier, d.c. link circuit, inverter and fixed capacitor bank. The...

Advantages of the JOKS-W computer control and display system (JOKS-W = Junker furnace control system for holding applications) < Automatic power input depending on metal level < Accurate assessment of refractory condition at any given time < Perfect monitoring and trend reporting facilitates appropriate preventive action < Maximum operating convenience JOKS-W menu screen for the switchgear system JOKS-W menu screen for refractory erosion Our range of channel-type induction furnaces The OTTO JUNKER line-up of channel-type induction furnaces ranges from standard sizes up to a useful capacity...

Forward tilting (space requirements) X = depending on pouring ladle height Forward/backward tilting (i) Furnace (6) Water manifold station X = depending on pouring ladle height

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