Air-cooled induction heaters are a type of induction heating machine that uses air as the power source and the cooling medium of the heating station. There is no need to install an additional cooling water system, and it is flexible and easy to use, so it can save users’ initial investment and daily maintenance costs.
KETCHAN induction air-cooled induction heaters are suitable for applications that require low-to-medium power and frequency and can be used to inductively heat inaccessible workpieces in the field without a cooling water source. Such as pre-welding preheating, post-welding heat treatment, and pipeline heating of large and special-shaped metal workpieces; disassembly, installation and maintenance of large electromechanical equipment, etc.
All air-cooled Induction Heaters for Sale

Air Cooled Induction Heating Machine
1. Full air cooled induction heating machine.
2. With DSP control technology.
3. Easy to move and install.
4. Suitable for wild working environments.
5. High

PWHT Machine

Induction Post Weld Heat Treatment machine
1. Pipe post weld heat treatment machine.
2. Fast heating speed, wide applications.
3. Uniform heating result.
4. Heating temperature can be well controlled.
5. Suitable

Induction Shrink Fitting Machine
1. Digital induction shrink fitting machine.
2. Fast heating speed, uniform heat result.
3. Energy-saving up 30%-80%.
4. Working environment is cleaner.
5. Direct manufacturer, reliable

Induction Heating Thermal Oil Boiler
Induction heating thermal conductive oil system;
Induction Heating Thermal Conductive Oil Machine;
Induction Fluid Heater;
Induction thermal conductive oil heater;
Inductive Fluid Heaters;

Air Cooled Induction Heating System
1. It’s digital air cooled induction heating machine.
2. The heating process can be programmed.
3. No need water cooling device.
4. High control precision, digital design.<br

Air Cooled Induction Heating Machine
1. Full air cooled induction heating machine.
2. With DSP control technology.
3. Easy to move and install.
4. Suitable for wild working environments.
5. High heating efficiency, energy-saving.

Post Weld Heat Treatment Machine
1. Air cooled post weld heat treatment machine
2. PID temperature closed loop contro
3. Full solid IGBT heat treatment machine
4. Adjustable Power level
5. Design service life 15 years.
6. Perfect self-protection functions.

PWHT Machine

Induction Post Weld Heat Treatment machine
1. Pipe post weld heat treatment machine.
2. Fast heating speed, wide applications.
3. Uniform heating result.
4. Heating temperature can be well controlled.
5. Suitable for large pipe heat treatment.

Induction Shrink Fitting Machine
1. Digital induction shrink fitting machine.
2. Fast heating speed, uniform heat result.
3. Energy-saving up 30%-80%.
4. Working environment is cleaner.
5. Direct manufacturer, reliable price.

Air Cooled Induction Heating System
1. It’s digital air cooled induction heating machine.
2. The heating process can be programmed.
3. No need water cooling device.
4. High control precision, digital design.
5. Wide frequency ranges and application fields.
Free technical advice. The experienced engineering team is ready for you!
air-cooled induction heater Features
- It use air-cooled induction coils and induction heating power supplies that do not need water cooling systems, which reduces the cost and complexity of installation and maintenance.
- Fast and precise power control, allows for consistent and uniform heating of the workpieces.
- Have advanced and intuitive user interfaces that enable easy programming and monitoring of the heating process.
- Have built-in safety and diagnostic features that protect the equipment and the operators from overheating, overvoltage, overcurrent, and other faults.
- Have a flexible and wide range of load impedance matching, which means they can adapt to different coil designs and workpiece shapes.
- More compact and portable than water-cooled machines, as they do not have bulky water tanks, pumps, and hoses.
- Environmentally friendly, as they do not consume water or produce wastewater.
- Easier to operate and maintain, as they do not require regular cleaning, refilling, or monitoring of the cooling system.
- The heating belt itself does not generate heat, and there will be no scalding accidents caused by the operator’s negligence, and its applicability and safety are higher.
Applications
- Pipeline preheating and post-weld heat treatment: It can be used to preheat large pipes before welding and to perform stress relief or tempering after welding. This can improve the quality and strength of the welds, reduce the risk of cracking, and increase the corrosion resistance of the pipes.
- Pipeline anticorrosive coating: It can be used to heat the pipes before applying a protective coating, such as epoxy or polyethylene. This can enhance the adhesion and durability of the coating, and prevent moisture and oxygen from reaching the metal surface.
- Shrink fitting: It can be used to heat metal parts that need to be fitted into other parts, such as bearings, gears, shafts, and couplings. This can expand the inner part and allow it to slide over the outer part. When the inner part cools down, it contracts and forms a tight fit with the outer part.
- Medium heating: heat transfer oil, industrial water, hot water boiler, chemical reaction kettle, hot air heating, etc.

Electromagnetic Induction Heating for Molds
Induction heating of molds is a technique widely used in plastic injection molding and metal forming. It involves using electromagnetic fields to generate heat directly within the mold surface,

Bolt Thermal-installation and Nut Thermal-removing with Induction Heating
Basic theory: thermal expansion and contraction of fasteners Working principle: Induction heating is a process that uses electromagnetic induction to generate heat within a conductive material, such as a bolt

Electromagnetic Induction Preheating of Wind Turbine Shafts
Electromagnetic induction preheating of wind turbine shafts 2 Electromagnetic induction preheating is a technique for heating wind turbine shafts and gears before further processing or assembly. This method uses electromagnetic

Installation and removal of motors and rotors
Induction heating is a highly effective method for both the installation and removal of motors and rotors. Installation Preheating: The motor or rotor is preheated using an induction heater, causing

Induction Heating Hot Assembly of Shaft Head
Induction heating hot assembly of shaft heads is a process where an induction heater is used to preheat the shaft head before assembly. This method ensures a tight fit and

Post-Weld Heat Treatment (PWHT) of Steel Structures
What’s It? Post-weld heat treatment (PWHT) of steel structures is a process that involves reheating the welded joints to a certain temperature and holding them for a specified time. The

Preheating Before Welding and Post-welding Heat Treatment
What are them? Preheating before welding and postweld heat treatment are heat treatment processes that can improve the quality, mechanical properties and integrity of welds. They are typically used for

Pre-Weld and Post-Weld Heat Treatment of Tunnel Rock Mining Boring Head Drill Bits
Pre weld and post weld heat treatment of tunnel rock mining boring head drill bits Post weld heat treatment of corner joints of steel structures Pre-weld and post-weld heat treatment

Preheating of steel plate welds in shipbuilding industry
The induction coil (also called a heating sheet or heating blanket) of the electromagnetic induction heating machine is made of flexible cables. It can quickly heat 20-90mm thick steel plates

Preheating for Welding Tooth Blade Bucket Cutting Edge
What is high frequency induction hardening machine? Preheating is an important step for welding tooth blade bucket cutting edge, as it reduces the risk of hydrogen cracking and improves

How to do large workpieces induction shrink fitting?
Current status of hot assembly and hot disassembly process The workpiece is assembled and disassembled with interference, and the traditional process uses acetylene to bake or cook with oil

Coupling Removal by Electromagnetic Induction Heating
Coupling removal by induction heating is a process of using an electric current to generate heat in a metal object, such as a coupling hub, and then applying a
Industries
- Electromechanical maintenance industry: disassembly and installation of large electromechanical equipment, such as disassembly and hot assembly of large workpieces such as bearings, gears, sprockets, counter wheels, couplings, connecting shafts, balance shafts, and roller motor rotors;
- Petrochemical industry: preheating of petroleum pipelines, thermal coating of pipelines, heating of oil storage tanks, etc.;
- Pre-weld preheating, post-weld heat treatment, hydrogen elimination treatment: pipe preheating before welding, mold preheating, pipeline post-weld hydrogen elimination treatment, steel structure post-weld heat treatment, boiler main steam pipe post-weld heat treatment.
- Other applications: Air-cooled induction heaters can be used for steam generator heating, heating engineering, industrial product drying, reaction shaft heating, raw materials for chemical production, as well as aerospace, shipbuilding, steel, boilers, ships, pressure vessels, steel frame structures, railways, bridges, mines Construction, automobile manufacturing, nuclear power, mining industry, etc.

Preheating of steel plate welds in shipbuilding industry
The induction coil (also called a heating sheet or heating blanket) of the electromagnetic induction heating machine is made of flexible cables. It can quickly heat 20-90mm thick steel plates

Preheating of Fillet Welds in Steel Structures of Railway Bridges
A fillet weld in steel structures of railway bridges is a weld that joins two pieces of metal at right angles. The air-cooled induction heating machine can work in the

Electromagnetic heating of chemical reactors
Chemical reactor electromagnetic heating is a technology that uses radio waves or magnetic fields to heat materials or fluids within the reactor (the process is also called induction heating chemical

Preheating before welding on offshore steel drilling platforms
Offshore steel structure drilling platforms use a large number of high-strength steels with thicknesses greater than 50mm and grades of DH32/36, EH32/36, EH40, FH40, etc., and even ultra-high-strength steels such