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Coating Pots
As the name implies, coating pots are used for holding the zinc or aluminum based alloy at a specific temperature. Inductotherm’s coating pots are designed to:
- Provide flexibility for cooling by offering both water-cooled and air-cooled inductors.
- Provide good support for the refractory lining through the use of heavy fabricated shells.
- Maintain the zinc alloy bath at a specfic temperature, with tap changer power supplies or with VIP solid-state power supplies for more accurate temperature control.
Inductotherm, the world leader in induction melting technology, designs, engineers, and manufactures, the most advanced zinc and zinc alloy melting and holding systems to suit your needs. Whatever your needs are, Inductotherm's zinc technologies work for you.
Engineered for a wide range of zinc applications, including Galvalume®, Galfan®, and galvanneal, Inductotherm induction furnaces and power supplies are used in strip galvanizing, wire galvanizing, hot-dip galvanizing, cathode melting, ingot melting, alloying, holding and emergency holding.
With different types of furnaces and power supplies, Inductotherm can build a system tailored to suit your application and budget needs.
Inductotherm offers two distinct technologies and auxillary equipment for your coating needs.
Channel Coating Pots
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Channel coating pots are recommended for Galvanized, Galvannealed, and Galfan® coatings as they provide satisfactory inductor rectangular design of the channel pot, easily facilitates ingot feeding, and are designed to hold very large metal volumes. They are also sometimes used when producing Galvalume® coatings. Channel coating pots are fabricated from heavy gauge steel plate to support the refractory. As they do not easily facilitate alloy change, multiple pots are recommended when multiple alloys are produced. Channel inductors contain induction coil assemblies and a magnetic core made of special transformer sheet laminations. The reliability is enhanced with bore temperature monitoring. The preparation is completed at the installation site by being cast or rammed with a special refractory around a burnt-out or removable channel mold.
Coreless Coating Pots
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Coreless Coating Pots are recommended when multiple alloy coatings are produced, particularly Galvalume®. Coreless pots are designed to withstand the most severe mill environments. A patented coil design extends below the bottom of the bath to provide superior magnetic coupling with the metal and greater electrical efficiency. The entire inductor coil is enclosed in a heavy steel shell providing the unit with additional protection.
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Pot Movement
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Pot Movement is accomplished by “Bogies” and “Lifts”. A Bogie is a heavy steel carriage consisting of a “single forging” wheel for both the driver and idler. A high ratio gear box and multi-speed AC motor provide the drive. Safety is assured with a spring set/magnetic release brake. Coating pot position is done with limit switches and/or digital encoders. A lift is used to raise and lower a full coating pot from the storage level in the basement, to the working level on the main mill floor. The lift will overextend approximately 50 mm to allow the insertion of “stiff legs”. Stiff legs are used to relieve the load on the lifting screws, while the pot is in the working position.
Hot Dip Galvanizing
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Channel and coreless coating pots can also be used for the coating of individual pieces in batch hot-dip galvanizing processes. These pieces could be anything from nuts and bolts to highway guardrails and lamp posts.
