Knowledge What is the Choice of Frequency for Induction Heating? (4 Key Frequencies Explained)
Author avatar

Tech Team · Kintek Solution

Updated 1 month ago

What is the Choice of Frequency for Induction Heating? (4 Key Frequencies Explained)

Choosing the right frequency for induction heating is crucial. It depends on the specific application, the size of the workpiece, and the desired depth of heat treatment. The frequency range typically used in induction heating varies from low to high, each suited for different applications and workpiece sizes.

What is the Choice of Frequency for Induction Heating? (4 Key Frequencies Explained)

What is the Choice of Frequency for Induction Heating? (4 Key Frequencies Explained)

1. Low Frequency (Medium Frequency) Induction Heating

The frequency range for medium frequency induction heating is generally between 1kHz and 10kHz.

This frequency band is suitable for large-size workpieces due to its larger penetration depth of the induced current.

It is commonly used for processes like large tempering, quenching, tempering, heating, and annealing of large workpieces such as modular gears, large diameter thick wall pipes, and large shafts.

This frequency is also effective for hot forging, smelting, and quenching of large layer depths.

2. Super Audio Frequency Induction Heating

The working frequency for super audio frequency induction heating is mainly between 6kHz and 60kHz.

This frequency band is characterized by its lack of operating noise and a current transmission depth of over 2mm.

It is ideal for applications such as brazing and small-size hot forging, particularly suitable for hardening operations with a layer depth of about 2 to 4mm.

3. High Frequency Induction Heating

High frequency induction heating operates at frequencies primarily between 60kHz and 200kHz.

The current penetration depth is less than 2mm, making it suitable for brazing, hot forging of small sizes (typically round bars below 15mm), and quenching operations with a layer depth of about 1 to 2mm.

This frequency is also used for smelting smaller quantities of materials, such as 1-5 kg of precious metals, due to its fast heating capabilities and compact size.

4. High-Frequency Induction Heating (Very High Frequency)

In some specialized applications, induction heating can operate at very high frequencies, typically between 100kHz and 500kHz.

This is particularly suitable for small and medium-sized parts that require a thin hardened layer, such as small module gears and small to medium-sized shafts.

The effective hardening depth in this frequency range is 0.5 to 2 mm.

In summary, the choice of frequency in induction heating is critical as it directly affects the penetration depth, heating efficiency, and the size and type of workpiece that can be effectively treated.

Lower frequencies are better for larger, deeper heat treatments, while higher frequencies are suitable for smaller, more precise applications with shallow hardening depths.

Continue Exploring, Consult Our Experts

Discover the precision and power of KINTEK SOLUTION's induction heating systems! From low to high frequencies, our versatile technology is tailored to optimize heat treatments for every workpiece size and application.

Explore our extensive range today and elevate your industrial heating processes to new heights of efficiency and precision.

Contact us now to learn more about how KINTEK SOLUTION can transform your operations!

Related Products

Ultra-high temperature graphitization furnace

Ultra-high temperature graphitization furnace

The ultra-high temperature graphitization furnace utilizes medium frequency induction heating in a vacuum or inert gas environment. The induction coil generates an alternating magnetic field, inducing eddy currents in the graphite crucible, which heats up and radiates heat to the workpiece, bringing it to the desired temperature. This furnace is primarily used for graphitization and sintering of carbon materials, carbon fiber materials, and other composite materials.

Vacuum levitation Induction melting furnace

Vacuum levitation Induction melting furnace

Experience precise melting with our Vacuum Levitation Melting Furnace. Ideal for high melting point metals or alloys, with advanced technology for effective smelting. Order now for high-quality results.

Vacuum induction melting furnace Arc Melting Furnace

Vacuum induction melting furnace Arc Melting Furnace

Get precise alloy composition with our Vacuum Induction Melting Furnace. Ideal for aerospace, nuclear energy, and electronic industries. Order now for effective smelting and casting of metals and alloys.

Continuous graphitization furnace

Continuous graphitization furnace

High-temperature graphitization furnace is a professional equipment for graphitization treatment of carbon materials. It is a key equipment for the production of high-quality graphite products. It has high temperature, high efficiency and uniform heating. It is suitable for various high-temperature treatments and graphitization treatments. It is widely used in metallurgy, electronics, aerospace, etc. industry.

High Thermal Conductivity Film Graphitization Furnace

High Thermal Conductivity Film Graphitization Furnace

The high thermal conductivity film graphitization furnace has uniform temperature, low energy consumption and can operate continuously.

Vacuum Induction Melting Spinning System Arc Melting Furnace

Vacuum Induction Melting Spinning System Arc Melting Furnace

Develop metastable materials with ease using our Vacuum Melt Spinning System. Ideal for research and experimental work with amorphous and microcrystalline materials. Order now for effective results.

Continuous working electric heating pyrolysis furnace plant

Continuous working electric heating pyrolysis furnace plant

Efficiently calcine and dry bulk powder and lump fluid materials with an electric heating rotary furnace. Ideal for processing lithium ion battery materials and more.

600T vacuum induction hot press furnace

600T vacuum induction hot press furnace

Discover the 600T Vacuum Induction Hot Press Furnace, designed for high-temperature sintering experiments in vacuum or protected atmospheres. Its precise temperature and pressure control, adjustable working pressure, and advanced safety features make it ideal for nonmetal materials, carbon composites, ceramics, and metal powders.

IGBT experimental graphitization furnace

IGBT experimental graphitization furnace

IGBT experimental graphitization furnace, a tailored solution for universities and research institutions, with high heating efficiency, user-friendliness, and precise temperature control.

Large Vertical Graphitization Furnace

Large Vertical Graphitization Furnace

A large vertical high-temperature graphitization furnace is a type of industrial furnace used for the graphitization of carbon materials, such as carbon fiber and carbon black. It is a high-temperature furnace that can reach temperatures of up to 3100°C.

Horizontal high temperature graphitization furnace

Horizontal high temperature graphitization furnace

Horizontal Graphitization Furnace: This type of furnace is designed with the heating elements placed horizontally, allowing for uniform heating of the sample. It's well-suited for graphitizing large or bulky samples that require precise temperature control and uniformity.

Vacuum arc furnace Induction melting furnace

Vacuum arc furnace Induction melting furnace

Discover the power of Vacuum Arc Furnace for melting active & refractory metals. High-speed, remarkable degassing effect, and free of contamination. Learn more now!

High temperature debinding and pre sintering furnace

High temperature debinding and pre sintering furnace

KT-MD High temperature debinding and pre-sintering furnace for ceramic materials with various molding processes. Ideal for electronic components such as MLCC and NFC.

Vibration Sieve

Vibration Sieve

Efficiently process powders, granules, and small blocks with a high-frequency vibration sieve. Control vibration frequency, screen continuously or intermittently, and achieve accurate particle size determination, separation, and classification.

Copper foam

Copper foam

Copper foam has good thermal conductivity and can be widely used for heat conduction and heat dissipation of motors/electrical appliances and electronic components.

PTFE insulator connector filter high voltage PTFE

PTFE insulator connector filter high voltage PTFE

PTFE insulator PTFE has excellent electrical insulation properties in a wide temperature and frequency range.

Electric heating blast drying oven

Electric heating blast drying oven

The desktop fast autoclave sterilizer is a compact and reliable device used for rapid sterilization of medical, pharmaceutical, and research items.

Vacuum hot press furnace

Vacuum hot press furnace

Discover the advantages of Vacuum Hot Press Furnace! Manufacture dense refractory metals & compounds, ceramics, and composites under high temp and pressure.

Wet three-dimensional vibrating sieve

Wet three-dimensional vibrating sieve

The wet three-dimensional vibrating sieving instrument focuses on solving the sieving tasks of dry and wet samples in the laboratory. It is suitable for sieving 20g - 3kg dry, wet or liquid samples.

Two-dimensional vibrating sieve

Two-dimensional vibrating sieve

KT-VT150 is a desktop sample processing instrument for both sieving and grinding. Grinding and sieving can be used both dry and wet. The vibration amplitude is 5mm and the vibration frequency is 3000-3600 times/min.

Dry three-dimensional vibrating sieve

Dry three-dimensional vibrating sieve

The KT-V200 product focuses on solving common sieving tasks in the laboratory. It is suitable for sieving 20g-3kg dry samples.

High precision diamond wire cutting machine

High precision diamond wire cutting machine

The high precision diamond wire cutting machine is a versatile and precise cutting tool designed specifically for material researchers. It utilizes a continuous diamond wire cutting mechanism, enabling precise cutting of brittle materials such as ceramics, crystals, glass, metals, rocks, and various other materials.

Dry and wet three-dimensional vibrating sieve

Dry and wet three-dimensional vibrating sieve

KT-VD200 can be used for sieving tasks of dry and wet samples in the laboratory. The screening quality is 20g-3kg. The product is designed with a unique mechanical structure and an electromagnetic vibrating body with a vibration frequency of 3000 times per minute.

Single punching electric tablet punching machine

Single punching electric tablet punching machine

The electric tablet punching machine is a laboratory equipment designed for pressing various granular and powdery raw materials into discs and other geometric shapes. It is commonly used in pharmaceutical, healthcare products, food, and other industries for small batch production and processing. The machine is compact, lightweight, and easy to operate, making it suitable for use in clinics, schools, laboratories, and research units.

915MHz MPCVD Diamond Machine

915MHz MPCVD Diamond Machine

915MHz MPCVD Diamond Machine and its multi-crystal effective growth, the maximum area can reach 8 inches, the maximum effective growth area of single crystal can reach 5 inches. This equipment is mainly used for the production of large-size polycrystalline diamond films, the growth of long single crystal diamonds, the low-temperature growth of high-quality graphene, and other materials that require energy provided by microwave plasma for growth.

12 inch/24 inch high precision automatic diamond wire cutting machine

12 inch/24 inch high precision automatic diamond wire cutting machine

The high precision automatic diamond wire cutting machine is a versatile cutting tool that uses a diamond wire to cut through a wide range of materials, including conductive and non-conductive materials, ceramics, glass, rocks, gems, jade, meteorites, monocrystalline silicon, silicon carbide, polycrystalline silicon, refractory bricks, epoxy boards, and ferrite bodies. It is especially suitable for cutting various brittle crystals with high hardness, high value, and easy to break.


Leave Your Message