Applications of UM induction heating equipment
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Induction heating is a method of providing fast, consistent heat for manufacturing applications which involve bonding or changing the properties of metals or other electrically-conductive materials. The process relies on induced electrical currents within the material to produce heat. Although the basic principles of induction are well known, modern advances in solid state technology have made induction heating a remarkably simple, cost-effective heating method for applications which involve joining, treating, heating and materials testing. For details about using induction heating with non-conductive materials, please visit email to us.
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Components of a Typical Induction Heating System
The basic components of an induction heating system are an AC
power supply, induction coil, and workpiece (material to be heated or treated).
The power supply sends alternating current through the coil, generating a
magnetic field. When the workpiece is placed in the coil, the magnetic field
induces eddy currents in the workpiece, generating precise amounts of clean,
localized heat without any physical contact between the coil and the
workpiece.
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Operating Frequency
There is a relationship between the frequency of the alternating
current and the depth to which it penetrates in the workpiece; low frequencies
of 5 to 30kHz are effective for thicker materials requiring deep heat
penetration, while higher frequencies of 100 to 400kHz are effective for smaller
parts or shallow penetration. For heating microscopic parts, UIHM offers
power supplies which operate at up to 60 MHz. The higher the frequency, the
higher the heat rate; a good analogy is the act of rubbing your hands together
for warmth. The faster your rub your hands together, the more warmth you
produce.
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Magnetic Vs. Non-Magnetic Materials
Magnetic materials are easier to heat than non-magnetics, due to
the effects of hysteresis heating. Magnetic materials naturally resist the
rapidly changing magnetic fields within the induction coil. The resulting
friction produces its own additional heat - hysteresis heating - in addition to
eddy current heating. A metal which offers high resistance is said to have high
magnetic "permeability". Permeability can vary on a scale of 100 to 500 for
magnetic materials; non-magnetics have a permeability of 1. Hysteresis heating
occurs at temperatures below the "Curie" point - the temperature at which a
magnetic material loses its magnetic properties.
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Depth of Penetration
The induced current flow within the part is most intense on
the surface, and decays rapidly below the surface. So the outside will heat more
quickly than the inside; 80% of the heat produced in the part is produced in the
outer "skin". This is described as the "skin depth" of the part. The skin depth
decreases when resistivity decreases, permeability increases or frequency
increases.
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Coupling Efficiency
Coupling refers to the proportional relationship between the
amount of current flow in the workpiece and the distance between the workpiece
and the coil. Close coupling generally increases the flow of current and
therefore increases the amount of heat produced in the workpiece.
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Newest Comment
We bring an experience of more than 15 years to the table as far as Induction Heating Equipment are concerned. Mr. Kulbhushan Goyal Promoter of the company having worked with M/s Newelco India P Ltd rising to the level of Technical Director.
We have very good contacts with all the major decision makers in Auto components Industry in India.
We are looking for a dealership agency for sales and service of Induction Hardening, Melting and other Heat Treatment Equipment for Indian market.
In case you are looking at Indian market as business prospectus, we invite you to join us explore this business opportunity.
Further details can be shared, once we know your interest.
I am looking forward to your feedback.
Best regards,
Kul Bhushan Goyal
Reliable Engineers
113, Ambica Vihar, New Delhi-110087
Mo: 09958678866
email: [email protected], [email protected]
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