Two Types Of Induction Melting Furnaces And What Makes Them Different

Types Of Induction Melting Furnaces

Traditional furnaces required significant energy and allowed less control over the temperature. Industries around the world are significantly benefiting from the clean and efficient method of metal melting using induction furnaces

Types Of Induction Furnaces

There are two major types of induction melting furnaces available in the market, each with unique benefits, qualities, and properties.

  • Coreless Induction Furnace 

Coreless induction furnaces are also known as high-frequency furnaces. As the name indicates, there is no core in this type of induction furnace. Instead, the coil acts as the core of coreless induction furnaces.

  • Working Principle 

In coreless induction furnaces, the charge is metal that is going to melt, and the primary is copper coil. When eddy currents are born, they produce the heat and melt metals, resulting in stirring action in liquid metals.

Iron laminations outside the primary windings create a low reluctant path for flux. The  frequency depends on the furnace size. If the capacity of the furnace is low, then a high frequency of 300Hz is employed. In contrast, with a high-capacity furnace, you require 600Hz frequencies. 

There are hollow copper tubes with cold water, which circulates to reduce copper loss. Another vital component is the tank  capacitor bank. 

Standard coreless induction furnaces are mainly used to melt high melting points as well as  low melting points metals.  Their capacity can range from a few kilos to tons. 

  • Advantages 

Coreless induction furnaces offer the following advantages:

– Low operating costs,

– Automatic stirring action from eddy currents 

– Fewer pollutants 

– less melting time

– Precise control of power 

– Simple charging and pouring

– Produce high-grade alloy steels.

  • Channel Type Induction Furnaces 

The channel-type induction furnace uses inductors that can fit in the furnace’s sides or bottom. Due to the flexibility of inductor installation, you can design the furnace any way you want. 

Channel induction furnaces are used to keep the metal in a liquid state. Channel induction furnaces are best suitable for metals that have low melting points. 

  • Working Principle 

Channel induction furnaces have a steel shell lining of refractory material. There is a channel that attaches a steel shell to a heating unit. In addition, there is an iron core surrounded by the main induction coil. When the heating process starts in the furnace, heat moves through the coil and heats the metal with a stirring action. 

The water systems can cool the channel induction furnace and handle huge capacities. It is cost-effective and provides high levels of efficiency. Moreover, it has a longer lifespan with durable lining material.

The induction unit has a magnetic iron core in a ring form, which acts as a primary induction coil. It is wound and creates a plain transformer. The molten metal loop is the secondary component. When heat is generated within the loop, it causes circulation in the metal.

  • Advantages 

Channel-type furnaces offer geometrical design versatility along with forehearth integration, simple siphon, and a pressure-tight design option. The versatile designs can offer the following characteristics:

– Improved heat transfer 

– Avoid excessive flow of heat and energy 

– Less power loss and energy reduction

– Ease maintenance and repair

– Minimum melt flow risk 

Get Technologically Advanced Furnaces From Electroheat Induction 

You can get the latest and state-of-the-art Induction furnaces from Electroheat Induction Inc. We are committed to providing modern heating and forging solutions to industries in  North America, Central America and South America, Canada, and the United States. Benefit from our induction furnaces and other heating solutions with installation supervision and support from our engineering team. 

Visit our website today to email us, or call +1-908-494-0726 to get a quote.

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