How does a coreless induction furnace work?

The coreless induction furnace is essentially a refractory-lined vessel surrounded by an electrically energized, current-carrying, water-cooled copper coil. Electrical current in the coil forms an electromagnetic field, generating thermal energy that melts the charge. Slag formation is inevitable during melting.

Which supply used for coreless induction heating furnace?

The coreless induction furnace can best be described as a refractory-lined vessel with an electrically energized/current-carrying, water-cooled copper coil surrounding it. Electrical current in the coil forms an electromagnetic field, which generates enough thermal energy to melt the charge.

What is supply frequency of coreless induction furnace?

The frequency employed depends upon the size of the coreless induction furnace. For a low capacity furnace, a high frequency of the order of 3000 Hz is employed. Whereas for a high capacity furnace, frequencies are down to 600 Hz.

What temperature is the induction furnace set at?

Most induction equipment has fixed furnace drain temperature switches set at 175 °F (79°C). What is an acceptable coreless induction melting furnace drain temperature? Typical induction melting furnace drain temperatures will range from 100°F (37°C) to 150 °F (65°C).

What are different types of induction furnaces?

Induction furnaces principle

• Induction furnaces principle.
• Coreless induction furnaces (without core)
• Channel induction furnaces.
• High efficiency induction.
• Channel induction press autopouring furnace.

What are the advantages of core less induction furnace?

Low melting loss, accurate temperature and process management plus a variable bath movement control capability are among the key benefits of medium- frequency coreless induction furnaces for melting aluminium and its alloys.

What is medium frequency induction furnace?

Medium-frequency coreless induction furnaces for copper and brass are designed to meet the needs of the semi-finished products industry. The continuous feeding of continuous casting lines requires precisely dosed pouring of the liquid metal over an extended period, achieved ideally with high-resolution tilting systems.

Does induction heating work on stainless steel?

Induction cooking surfaces work well with any pans with a high ferrous metal content at the base. Cast iron pans and any black metal or iron pans will work on an induction cooking surface. Stainless steel pans will work on an induction cooking surface if the base of the pan is a magnetic grade of stainless steel.

Which type of heating is induction heating?

Induction heating is the process of heating electrically conductive materials like metals by electromagnetic induction, through heat transfer passing through an induction coil that creates an electromagnetic field within the coil to melt down steel, copper, brass, graphite, gold, silver, aluminum, and carbide.

Where is induction furnace used?

An induction furnace is an electrical furnace in which the heat is applied by induction heating of metal. Induction furnace capacities range from less than one kilogram to one hundred tonnes, and are used to melt iron and steel, copper, aluminum, and precious metals.

What is the advantage of induction furnace?

Induction furnace capacities range from less than one kilogram to one hundred tonnes, and are used to melt iron and steel, copper, aluminum, and precious metals. The advantage of the induction furnace is a clean, energy-efficient and well-controllable melting process compared to most other means of metal melting.

Is there a core in a coreless induction furnace?

No core is provided in the coreless induction furnace. A crucible of more convenient shape can be employed. In this case, also the charge to be melted is made the secondary of the transformer. The primary is wound over the crucible itself. The eddy currents produced in the charge not only heat it up but also account for the stirring action.

Which is better a coreless furnace or a channel furnace?

The channel induction furnace is best for metals which have lower melting points, while the coreless furnace is best utilized for metals with higher melting points. The coreless induction furnace is capable of melting the most difficult metals such as cast iron and stainless steel.

How is the primary wound in a coreless furnace?

The primary is wound over the crucible itself. The eddy currents produced in the charge not only heat it up but also account for the stirring action. It is the basic coreless induction furnace principle.

What makes a channel induction furnace an induction furnace?

The induction unit features an iron core which is surrounded by the primary induction coil. When the metal is heated in the channel induction furnace, the way the heat moves through the coil creates a stirring action in the furnace content of the molten metal.