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Încălzitor cu inducție


Explore our range of high-quality, reliable used induction heaters for sale. Whether you're in need of efficient heating solutions for metalworking, forging, or industrial processes, our selection of pre-owned induction heaters offers cost-effective options without compromising on performance. With advanced technology and trusted brands, our inventory ensures optimal heating precision and energy efficiency. Browse our collection today to find the perfect used induction heater to meet your needs and budget.


Discover answers to common questions about induction heaters. Learn about their applications, benefits, and operation. Find out how induction heating works, its advantages over traditional methods, and factors to consider when choosing an induction heater. Get expert insights to make informed decisions for your heating needs.

An induction heater is a type of heating equipment that uses electromagnetic induction to generate heat within a conductive material, typically a metal. It works by creating a rapidly alternating magnetic field through a coil of wire, known as the induction coil or inductor, which induces eddy currents in the material being heated. These eddy currents dissipate energy in the form of heat, heating up the material quickly and efficiently.

Induction heaters are commonly used in various industrial applications, including metalworking, forging, brazing, soldering, heat treatment, and melting. They offer several advantages over traditional heating methods, including fast heating rates, precise temperature control, uniform heating, energy efficiency, and the ability to heat localized areas without heating the surrounding material.

Induction heaters come in various sizes and configurations, ranging from small benchtop units for laboratory or small-scale applications to large industrial systems for high-volume production. They can heat a wide range of materials, including ferrous and non-ferrous metals, alloys, and other conductive materials.

Overall, induction heaters are versatile and effective tools for heating metal parts and components in a wide range of industrial processes, offering advantages in terms of speed, precision, efficiency, and controllability.

Using an induction heater involves several steps to ensure safe and effective operation. Here’s a general guide on how to use an induction heater:

Setup and Preparation:

Place the induction heater on a stable and flat surface, ensuring adequate ventilation around the unit.
Connect the induction heater to a power source according to the manufacturer’s instructions.
Ensure that the workpiece to be heated is clean and free of any contaminants or debris.
Selecting the Heating Coil:

Choose an appropriate heating coil size and shape that matches the geometry and size of the workpiece.
Attach the selected heating coil securely to the induction heater, ensuring proper alignment and contact with the workpiece.
Adjusting Settings:

Turn on the induction heater and set the desired heating parameters, including power output, frequency, and heating time.
Refer to the manufacturer’s instructions or user manual for recommended settings based on the material and size of the workpiece.
Positioning the Workpiece:

Place the workpiece within the heating coil, ensuring that it is positioned centrally and securely to receive uniform heating.
Avoid placing the workpiece too close to the edges of the heating coil to prevent uneven heating.
Initiating Heating:

Start the heating process by activating the induction heater.
Monitor the temperature of the workpiece using an infrared thermometer or other temperature monitoring device.
Adjust the heating parameters as needed to achieve the desired temperature profile and heating rate.
Heating and Control:

As the workpiece heats up, observe any color changes or signs of temperature uniformity.
Control the heating process by adjusting the power output or heating time to maintain the desired temperature and heating rate.
Completing the Heating Process:

Once the workpiece has reached the desired temperature, deactivate the induction heater.
Allow the workpiece to cool down gradually or use appropriate cooling methods if rapid cooling is required.
Măsuri de siguranță:

Wear appropriate personal protective equipment (PPE), including heat-resistant gloves and safety glasses, to protect against burns and hazards.
Follow all safety guidelines and precautions outlined in the manufacturer’s instructions or user manual.
Shutdown and Maintenance:

Turn off the induction heater and disconnect it from the power source.
Clean and inspect the heating coil and induction heater regularly to ensure proper functioning and longevity.
By following these steps and practicing proper safety procedures, you can effectively use an induction heater to heat metal parts and components for various industrial applications.

Choosing the right induction heater involves considering several factors to ensure that it meets your specific heating needs and requirements. Here’s a guide on how to choose an induction heater:

Define Your Application Needs:

Determine the specific heating applications for which you’ll be using the induction heater. Consider factors such as the type of material to be heated, the size and shape of the workpieces, and the desired heating temperature range.
Heating Power and Frequency:

Select an induction heater with sufficient heating power (measured in kilowatts or watts) to meet the heating requirements of your application. Higher power ratings are suitable for larger or thicker workpieces.
Consider the frequency range of the induction heater, as different frequencies may be more effective for heating specific materials or achieving desired heating depths.
Control and Adjustability:

Look for induction heaters with adjustable heating parameters, including power output, frequency, and heating time. This allows for precise control over the heating process to achieve consistent results.
Consider whether the induction heater offers temperature control features or temperature monitoring capabilities to ensure accurate and uniform heating.
Coil Design and Compatibility:

Choose an induction heater with interchangeable or customizable heating coils to accommodate different workpiece sizes and shapes.
Ensure that the heating coil design is compatible with your application requirements, such as heating uniformity, heating depth, and access to the workpiece.
Portability and Flexibility:

Determine whether portability is important for your application, and choose an induction heater that is lightweight and easy to move if needed.
Consider whether the induction heater can be used in various locations or environments, such as on-site or in a laboratory setting.
Safety Features:

Prioritize safety features such as overheat protection, voltage fluctuations protection, and automatic shut-off mechanisms to prevent accidents and ensure operator safety.
Look for induction heaters with built-in safety interlocks or sensors that detect abnormalities in the heating process and trigger automatic shutdowns if necessary.
Quality and Reliability:

Choose an induction heater from a reputable manufacturer with a track record of producing high-quality, reliable equipment.
Read customer reviews and testimonials, and consider factors such as warranty coverage, technical support, and availability of spare parts.
Cost Considerations:

Determine your budget for purchasing an induction heater, and compare the features and specifications of different models within your price range.
Consider the long-term value and return on investment (ROI) of the induction heater in terms of its performance, durability, and energy efficiency.
By considering these factors and conducting thorough research, you can select an induction heater that best fits your heating needs and provides reliable and efficient performance for your application.

An induction heater works based on the principle of electromagnetic induction. Here’s an overview of how induction heaters operate:

Generation of Alternating Magnetic Field: The induction heater contains a coil of wire, often referred to as the induction coil or inductor, which is connected to an alternating current (AC) power source. When AC current flows through the coil, it generates a rapidly alternating magnetic field around the coil.

Induction of Eddy Currents: When a conductive material, such as a metal workpiece, is placed within the alternating magnetic field generated by the coil, it induces electric currents, known as eddy currents, to flow within the material. These eddy currents are induced due to the phenomenon of electromagnetic induction.

Conversion of Electrical Energy to Heat: As the eddy currents flow through the conductive material, they encounter resistance, which leads to the conversion of electrical energy into heat. This process causes the material to heat up rapidly and uniformly throughout its volume.

Heating of the Workpiece: The generated heat within the workpiece raises its temperature to the desired level, allowing for various heating applications such as brazing, soldering, forging, heat treatment, and surface hardening.

Control and Monitoring: The induction heater typically includes controls to adjust the heating parameters such as power output, frequency, and heating time. Temperature monitoring devices, such as infrared thermometers or thermocouples, may also be used to monitor the temperature of the workpiece during heating.

Efficiency and Precision: Induction heating offers several advantages over traditional heating methods, including high efficiency, rapid heating rates, precise temperature control, uniform heating distribution, and the ability to heat localized areas without heating the surrounding material.

Cooling and Post-Heating Treatment: After the desired heating cycle is completed, the workpiece may be allowed to cool down naturally or subjected to rapid cooling methods such as quenching or air cooling, depending on the specific application requirements.

Overall, induction heaters are versatile and efficient tools for heating metal parts and components in a wide range of industrial applications, offering advantages in terms of speed, precision, energy efficiency, and controllability.



There are several reputable brands that manufacture induction heaters, offering a wide range of models and configurations to suit various industrial and commercial applications. Some well-known brands in the induction heating industry include:

Ambrell: Ambrell is a leading manufacturer of induction heating systems, offering a comprehensive range of induction heating solutions for applications such as brazing, soldering, annealing, and heat treating.

EFD Induction: EFD Induction specializes in the design and manufacture of induction heating equipment for diverse industrial applications, including metalworking, automotive, aerospace, and construction.

Eldec: Eldec is a global supplier of high-frequency induction heating systems, providing solutions for applications such as hardening, brazing, annealing, and shrink fitting across various industries.

GH Induction: GH Induction is a renowned manufacturer of induction heating equipment, offering induction heating solutions for a wide range of industries, including automotive, aerospace, energy, and manufacturing.

Inductoheat: Inductoheat is a leading provider of induction heating and heat treating equipment, offering innovative solutions for applications such as forging, melting, and surface hardening.

Lepel Corporation: Lepel Corporation specializes in the design and manufacture of induction heating systems for industrial applications, offering solutions for heating, drying, curing, and bonding processes.

Radyne Corporation: Radyne Corporation is a leading manufacturer of induction heating equipment, providing solutions for applications such as induction brazing, soldering, and heat treating in industries such as aerospace, automotive, and electronics.

Ultraflex Power Technologies: Ultraflex Power Technologies offers a wide range of induction heating equipment for industrial and commercial applications, including induction melting, forging, brazing, and soldering.

These are just a few examples of the many reputable brands that manufacture induction heaters worldwide. When choosing an induction heater, it’s important to consider factors such as the specific heating requirements of your application, the quality and reliability of the equipment, technical support, and after-sales service provided by the manufacturer.

The cost of an induction heater can vary widely depending on several factors, including its power rating, features, brand, and geographic location. Here are some general price ranges to give you an idea:

Small-Scale Benchtop Units: These are typically lower-powered units suitable for laboratory or small-scale applications. Prices can range from a few hundred dollars to a couple of thousand dollars, depending on the power rating and features.

Medium-Sized Industrial Units: These induction heaters are designed for medium-scale industrial applications and may have higher power ratings and additional features such as temperature control and programmability. Prices for medium-sized units can range from several thousand to tens of thousands of dollars.

Large Industrial Systems: These are high-powered induction heaters designed for heavy-duty industrial applications, such as metal forging, heat treating, and melting. Prices for large industrial systems can range from tens of thousands to several hundred thousand dollars, depending on the power rating, capacity, and complexity of the system.

It’s important to note that these are rough estimates, and the actual cost of an induction heater can vary based on factors such as the brand, model, specifications, and any additional features or accessories included. Additionally, prices may also be influenced by factors such as taxes, tariffs, shipping costs, and currency exchange rates.

When purchasing an induction heater, it’s advisable to obtain quotes from multiple suppliers, compare prices and specifications, and consider factors such as the equipment’s quality, reliability, technical support, and after-sales service provided by the manufacturer.

The time it takes to heat a workpiece with an induction heater depends on several factors, including the material being heated, the size and shape of the workpiece, the power output of the induction heater, and the desired temperature to be reached. Here are some general considerations:

Material Properties: Different materials have different electrical conductivity and magnetic permeability, which can affect their heating rates. Conductive materials heat up more quickly with induction heating compared to non-conductive materials.

Workpiece Size and Shape: The size and shape of the workpiece influence the heating time. Larger and thicker workpieces require more time to heat up compared to smaller or thinner ones due to their higher thermal mass.

Induction Heater Power Output: Higher power output induction heaters can deliver more energy to the workpiece, resulting in faster heating rates. Lower power output heaters may require longer heating times for the same workpiece.

Heating Depth: The depth to which the induction heater can penetrate and heat the material also affects the heating time. Deeper heating requires more time compared to surface heating.

Desired Temperature: The final temperature to which the workpiece needs to be heated will also influence the heating time. Heating to lower temperatures generally takes less time compared to heating to higher temperatures.

Efficiency and Control: The efficiency and control of the induction heating process, including factors such as the design of the heating coil, temperature control capabilities, and process optimization, can also impact heating time.

In general, induction heating offers rapid heating rates compared to traditional heating methods such as furnace heating or flame heating. However, the exact heating time can vary significantly depending on the specific factors mentioned above. It’s advisable to conduct trials and experiments with your specific application to determine the optimal heating parameters and heating time required for your workpiece.

The typical lifespan of an induction heater can vary depending on several factors, including the quality of the equipment, the frequency of use, maintenance practices, and operating conditions. However, well-maintained induction heaters from reputable manufacturers can have a lifespan ranging from 10 to 20 years or more in industrial settings. Here are some factors that can influence the lifespan of an induction heater:

Build Quality: Induction heaters constructed with high-quality materials and components tend to have longer lifespans compared to lower-quality alternatives. Robust construction and durable components contribute to the overall reliability and longevity of the equipment.

Operating Conditions: The operating environment and conditions can impact the lifespan of an induction heater. Exposure to extreme temperatures, humidity, dust, and corrosive substances can accelerate wear and deterioration of the equipment. Proper installation and environmental controls can help mitigate these effects.

Maintenance Practices: Regular maintenance and servicing of the induction heater are essential for prolonging its lifespan. This includes routine inspections, cleaning, lubrication of moving parts, calibration of control systems, and replacement of worn or damaged components. Following the manufacturer’s recommended maintenance schedule and procedures is crucial for optimal performance and longevity.

Frequency of Use: The frequency and intensity of use can affect the wear and tear on an induction heater. Equipment that is used extensively or operated at high power levels may experience more rapid degradation of components and may require more frequent maintenance or replacement.

Overloading and Overheating: Overloading the induction heater beyond its rated capacity or subjecting it to excessive temperatures can cause premature wear and damage to internal components. Operating the equipment within its specified limits and avoiding prolonged overheating can help prolong its lifespan.

Technological Advances: Advances in technology and improvements in design may lead to obsolescence of older induction heaters over time. However, regular upgrades, retrofits, or replacements of outdated components can extend the useful life of the equipment and keep it operating efficiently.

Overall, the lifespan of an induction heater depends on a combination of factors, and proper care, maintenance, and adherence to operational guidelines are essential for maximizing its longevity and performance. Regular monitoring and assessment of the equipment’s condition can help identify potential issues early and mitigate risks of premature failure.

Yes, induction heaters are generally considered safe to use when operated properly and in accordance with manufacturer instructions. Here are several reasons why induction heaters are considered safe:

No Open Flames: Unlike traditional heating methods such as torches or furnaces, induction heaters do not rely on open flames for heating. This eliminates the risk of fire hazards associated with flame-based heating methods.

No Hot Surfaces: Induction heaters heat the workpiece directly through electromagnetic induction, without heating the surrounding air or heating elements. As a result, there are typically no hot surfaces that can cause burns or pose a safety risk to operators.

Precision Temperature Control: Induction heaters offer precise temperature control capabilities, allowing operators to accurately control and monitor the heating process. This helps to prevent overheating of the workpiece and minimize the risk of thermal damage.

Automatic Safety Features: Many induction heaters are equipped with automatic safety features such as overheat protection, voltage fluctuations protection, and automatic shut-off mechanisms. These features help to prevent equipment damage and ensure safe operation.

No Toxic Fumes: Induction heating does not produce harmful emissions or toxic fumes, making it safer for operators and the environment compared to combustion-based heating methods.

Low Electromagnetic Radiation: Induction heaters produce low levels of electromagnetic radiation, which are generally considered safe for operators and nearby personnel. However, it’s important to follow recommended safety guidelines and maintain a safe distance from the induction heater during operation.

Enclosed Design: Many induction heaters feature enclosed designs with protective housings or enclosures that shield operators from moving parts and electrical components, further enhancing safety during operation.

While induction heaters are generally safe to use, it’s important for operators to receive proper training on their use and follow all safety precautions outlined in the manufacturer’s instructions. This includes wearing appropriate personal protective equipment (PPE), such as safety glasses and heat-resistant gloves, and ensuring that the induction heater is installed and maintained correctly. By adhering to these guidelines, operators can safely and effectively utilize induction heaters for a wide range of industrial heating applications.

Principalele componente ale unui încălzitor cu inducție includ de obicei:

Sursa de alimentare: Această componentă furnizează energia electrică necesară pentru a genera curentul alternativ (AC) care alimentează sistemul de încălzire prin inducție.

Bobina de inducție (inductor): Bobina de inducție, cunoscută și sub numele de inductor, este o bobină de sârmă prin care curge curentul alternativ. Acesta generează câmpul magnetic alternant rapid necesar pentru producerea inducției electromagnetice.

Bobina de lucru: Bobina de lucru este partea încălzitorului cu inducție care interacționează direct cu piesa de prelucrat care este încălzită. De obicei, este o bobină strânsă de țeavă sau sârmă de cupru care înconjoară sau se află în imediata apropiere a piesei de prelucrat.

Banca de condensatoare: Banca de condensatoare stochează și eliberează energie electrică pentru a îmbunătăți eficiența procesului de încălzire prin inducție. Ajută la furnizarea unei puteri stabile și consistente bobinei de inducție.

Sistem de răcire: Sistemul de răcire ajută la disiparea căldurii generate în timpul funcționării și previne supraîncălzirea componentelor critice, cum ar fi sursa de alimentare, bobina de inducție și acumulatorul de condensatori. Poate include ventilatoare de răcire cu aer, jachete răcite cu apă sau alte mecanisme de răcire.

Sistem de control: Sistemul de control gestionează și reglează procesul de încălzire prin inducție, inclusiv setarea parametrilor precum puterea de ieșire, frecvența, timpul de încălzire și controlul temperaturii. Poate include controlere logice programabile (PLC), microcontrolere sau panouri de control dedicate cu interfețe utilizator.

Dispozitive de monitorizare a temperaturii: Dispozitivele de monitorizare a temperaturii, cum ar fi termometrele cu infraroșu, termocuplurile sau pirometrele sunt folosite pentru a măsura temperatura piesei de prelucrat în timpul încălzirii. Acestea oferă feedback în timp real sistemului de control pentru un control precis al temperaturii.

Caracteristici de siguranță: caracteristicile de siguranță, cum ar fi protecția împotriva supraîncălzirii, protecția împotriva fluctuațiilor de tensiune și mecanismele de oprire automată, sunt încorporate în încălzitoarele cu inducție pentru a preveni accidentele și pentru a asigura siguranța operatorului. Aceste caracteristici pot include senzori, interblocări și alarme de siguranță.

Carcasă sau carcasă: Carcasa sau carcasa asigură protecție și izolare pentru componentele interne ale încălzitorului cu inducție, ferindu-le de factorii de mediu și asigurând funcționarea în siguranță.

Aceste componente lucrează împreună pentru a genera și controla procesul de inducție electromagnetică utilizat pentru încălzire în încălzitoarele cu inducție, făcându-le instrumente versatile și eficiente pentru diverse aplicații de încălzire industrială.