What is coreless induction furnace?
Coreless induction furnaces are commonly used in foundries for melting recycled scrap metal to provide molten metal for making castings (Figure 1). In a coreless induction furnace, electromagnetic stirring of the molten metal bath occurs when power is applied to the furnace.
What are the advantages of coreless induction furnace?
Advantages of Coreless Induction Furnace Their charging and pouring is simple. The melting time is very low. There is precise control of power in case of coreless induction furnace. The operation of the coreless induction furnace is free from smoke, dirt and noise.
What is channel type induction furnace?
Channel induction furnaces are commonly used for melting low-melting-point alloys and/or as a holding and superheating unit. Channel induction furnaces consist of a refractory-lined steel shell that contains molten metal. The two types of channel furnaces are horizontal and vertical.
What is induction heating principle?
Working Principle of Induction Heating The induction heating works on the principle of transformer action, in which the primary winding which is supplied from an AC source is magnetically coupled to the charge, to be heated, which acts as a short-circuited secondary of a single turn.
What is Ajax Wyatt furnace?
An improved form of core type induction furnace is Ajax Wyatt furnace. This furnace is very suitable for continuous operation, and it can be operated on standard supply frequency i.e., 50 Hz. The core is made of laminated steel, and the single turn of molten metal forms the secondary circuit.
What are the application of induction furnace?
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 tons, and are used to melt iron and steel, copper, aluminum, and precious metals.
Which of the following is the advantage of an induction furnace?
Which of the following is/are the advantage(s) of an Induction Furnace? Explanation: Advantages offered by Induction Furnace are higher yield, faster startup, cleaner melting, natural stirring and compact installation.
Which supply used for coreless induction heating furnace?
Hollow copper tubes are used in which cold water is circulated to reduce the copper losses. The operating power factor of such furnaces is very low (between 0.1 and 0.3). Therefore, static capacitors are used to improve the power factor of the installation.
What is induction furnace PDF?
Translate PDF. ELECTRIC INDUCTION FURNACE The electric induction furnace is a type of melting furnace that uses electric currents to melt metal. Induction furnaces are ideal for melting and alloying a wide variety of metals with minimum melt losses, however, little refining of the metal is possible.
What is crucible furnace?
A crucible furnace is one of the oldest types of melting ovens there is. It is a container that can be made from any material that has the ability to withstand very high melting temperatures. These ovens are categorized by how the molten metal is removed from the crucible:
What is direct arc furnace?
The direct arc furnace is the one in which the electric arc is struck between the electrode and the charge, to be heated, so that the arc current flows through the charge and there is a direct contact between the arc and the charge.
What is frequency in induction furnace?
Operating frequencies range from utility frequency (50 or 60 Hz) to 400 kHz or higher, usually depending on the material being melted, the capacity (volume) of the furnace and the melting speed required.
How many types of furnace are there?
four
There are four main types of furnaces: natural gas, oil, electric, and propane. Electric furnaces can heat the air by exposing heated elements, while other types of furnaces typically require a heat exchanger or chamber that warms the surrounding air.