Transcript Creativity Session

Induction Heating
Introduction of
induction heating
Induction heating is a process which is used to bond,
harden or soften metals or other conductive
materials. For many modern manufacturing
processes, induction heating offers an attractive
combination of speed, consistency and control.
 Induction heating is a non-contact heating process. It
uses high frequency electricity to heat materials that
are electrically conductive. Since it is non-contact,
the heating process does not contaminate the
material being heated. It is also very efficient since
the heat is actually generated inside the workpiece.
This can be contrasted with other heating methods
where heat is generated in flame or heating element,
which is then applied to the workpiece. For these
reasons Induction heating leads itself to some unique
applications in industry.

How Induction heating
works?

It helps to have a basic
understanding of the
principles of electricity.
When an alternating
electrical current is
applied to the primary
of a transformer, an
alternating
magnetic
field is created. A
source
of
high
frequency electricity is
used to drive a large
alternating
current
through a coil. This coil
is known as the work
coil. See the picture
opposite.



In a basic induction heating setup shown at right, a solid state
RF power supply sends an AC current through an inductor
(often a copper coil), and the part to be heated (the workpiece)
is placed inside the inductor. The inductor serves as the
transformer primary and the part to be heated becomes a short
circuit secondary. When a metal part is placed within the
inductor and enters the magnetic field, circulating eddy
currents are induced within the part.
The passage of current through this coil generates a very
intense and rapidly changing magnetic field in the space within
the work coil. The workpiece to be heated is placed within this
intense alternating magnetic field.
Depending on the nature of the workpiece material, a number
of things happen...
Alternative industrial
heating method

Flame heating

Resistance heating

Traditional ovens and furnaces
Advantages of
induction heating

Optimize consistency

Maximize productivity

Improved product quality

Extended fixture life

Environmentally sound

Reduce energy consumption
About shapet induction
machine



Shapet Electric Company having wide experience in
the induction field.
Shapet successfully launched induction melting
machine, induction casting machine, induction
brazing machine, induction hardening machine and
much more.
Shapet Electric Company supply induction melting
machine to India’s biggest brand Tata Tanishq since
long time.