Industrial Induction Heater: Types, Applications and Sourcing Guide
Industrial Induction Heater: Types, Applications and Sourcing Guide
An industrial induction heater is process heating equipment that raises the temperature of a metal workpiece or a metallic heating element by electromagnetic induction rather than by flame, combustion gas or direct resistance contact. In practical terms, the unit takes a standard mains supply, converts it into a high-frequency current — 5 kHz to 40 kHz across the JONSON product range — and drives a copper coil that produces an alternating magnetic field. That field induces eddy currents inside the metal itself, so heat is generated in the material rather than transferred into it from an external source.
This guide is written for buyers who are still at the discovery and research stage: engineers, plant managers, procurement staff and importers who need to understand what an industrial induction heating machine actually is, which product families exist, which industries already run them, and how to shortlist an industrial induction heater manufacturer before requesting a quotation. JONSON is the brand of Guangdong Jiangxin Electronic Technology Co., Ltd., an induction heating equipment manufacturer established in 2011 and based in Shunde District, Foshan, Guangdong Province, China, whose published portfolio covers induction heaters, induction heating machines, control boards, steam generators, hot air generators, industrial water boilers and custom heating coils.
Problem definition: why induction heating is hard to specify at first
The difficulty buyers face at the start is not usually the technology itself — it is terminology and scope. Search results for industrial induction heating equipment mix several different things into one category: complete heating machines, induction heating power supplies, control boards, coils, and boiler-type products such as steam generators and hot air furnaces. Each term describes a different layer of the same installation, and a quotation that looks comparable on price may be describing only one layer.
Three further questions appear consistently in early-stage buyer research:
- Power sizing. A machine that heats a small component in seconds may be unsuitable for a continuous pipeline or a tank heating loop, even though both are called induction heaters.
- Electrical and site conditions. Single-phase 220 V and three-phase 380 V machines exist in the same catalogue, and available supply, ambient temperature, humidity and cooling water determine which units are actually installable.
- Documentation. Certifications such as CE, ISO and RoHS are issued against specific products, not against a general product family, so a buyer needs to know which model carries which marking.
At the discovery stage, the practical goal is not to compare prices. It is to build a shortlist of manufacturer candidates whose published specifications match the process, the site and the compliance requirements of the destination market.
Industry background: where induction heating already fits
Induction heating is not a niche method. It is already established across a wide band of manufacturing and utility processes. In the JONSON product documentation, the industries routinely named for induction heating equipment include plastics and rubber, food processing, chemical reactions, crude oil pipeline heating, textile printing and dyeing, aquaculture heating, metal heat treatment, building heating and medicinal herb drying.
Drilling down one level, the same documentation describes induction heating as applicable to pipeline heating in plastic machinery — including injection moulding machines, wire drawing machines, granulators and extruders — as well as food machinery, crude oil transportation, boilers and heat transfer oil heating. A separate product family is designed for bearing heating, and a further group covers steam supply, hot air drying and constant-temperature water supply for factories, schools, hospitals, hotels, farms and greenhouses.
In metalworking more broadly, induction heating is widely used for tasks such as hardening, annealing, brazing and forging. Those processes are all metal heat treatment in the general sense, but they differ substantially in required frequency, power density, heating time and coil geometry, which is why the specification conversation matters more than the product label.
Two structural reasons explain the continued interest. First, electric heating removes combustion from the point of use, which simplifies ventilation and permits in factories where fuel-fired equipment is constrained. Second, induction heating generates heat inside the workpiece or the metallic heater body, so less energy is lost to the surrounding air than in systems that must first heat a transfer medium.
Detailed solution: what industrial induction heating equipment contains
A complete induction heating installation is assembled from distinct sub-systems. Understanding them separately is what allows a buyer to compare manufacturers on equal terms.
1. Power supply and control system
The power supply is the part that takes mains electricity and produces the high-frequency current that drives the coil. On JONSON induction heaters, the control system is described as a DSP-based high-speed automatic phase-locking tracking system, with the main circuit built either as a half-bridge series resonance structure (lower-power single-phase units) or a full-bridge series resonance structure (three-phase units).
Published control and protection characteristics include:
- Programmable digital display monitoring
- PID power adjustment through a 0–5 V input voltage, and RS-485 on the JS1000-100 model
- Load temperature detection from 0 to 1000 °C, with accuracy up to ±1 °C
- Start time below 1 second
- Instantaneous overcurrent protection time of ≤2 µs
- Power overload protection at 130% instantaneous protection
- Fully electrically isolated soft start heating and stop mode
- Stepless power adjustment between 20% and 100% on most models
2. Heating coil
The induction heating coil is the interface between the electrical system and the workpiece, and it is normally customised to the part. JONSON offers customised electromagnetic induction heating coils made of copper, with a rated power range of 1 kW to 100 kW, rated voltage and frequency of 220 V / 380 V at 50 Hz / 60 Hz, an operating frequency of 5 kHz to 40 kHz, and a stated heat conversion efficiency of ≥98%.
Coil adaptation is specified per power class. The 2.5 kW unit, for example, uses a 4 mm² line, 23 m long, with inductance of 100–150 µH, while the 100 kW unit uses a 95 mm² line, 40 m long, with inductance of 80–100 µH. Coil-to-load distance is also documented: approximately 20–25 mm for a circular coil, 15–20 mm for a plane coil and 10–15 mm for an elliptical coil, with an insulation layer added to the heated area to improve thermal efficiency.
3. Mechanical construction and materials
Across the range, the documented bill of materials is consistent: a copper wire core heating coil, an outer casing of thickened aluminium alloy and thickened cold-rolled steel plate, and a 304 stainless steel inner liner on the boiler-type products. The 100 kW wall-mounted unit weighs 35 kg and measures 635 mm × 445 mm × 315 mm, while the smallest wall-mounted model, the JS1300-005/008, measures 295 mm × 169 mm × 145 mm.
4. Adjacent product families
Induction heating power is also packaged into application-specific equipment. Documented examples include the JS-1600 induction steam generator with rated power of 30 kW, 40 kW or 50 kW and a heat conversion efficiency of ≥99%; the JS-1600-8/12/15 induction heating hot air generator with an outlet temperature of 80–130 °C and wind pressure of 800–1000 Pa; the JS-JR-008 induction water heater rated 3.5–8 kW at 220 V; and an 8 kW single-phase full-bridge induction heater control board for appliance applications.
Comparison table: JONSON induction heater families by published specification
The table below consolidates specification data published for individual JONSON models. Certification and cooling fields are shown only where the documented specification states them; a dash means the attribute is not declared in the available product data.
| Model / family | Rated power | Rated voltage | Heat conversion efficiency | Heat dissipation | Certification |
|---|---|---|---|---|---|
| JS1300-005/008 (wall-mounted) | 5 kW, 8 kW | 380 V (±20%) | — | — | CE, ISO |
| JS1300-10/15 (wall-mounted) | 10 kW, 15 kW | 380 V (300–400 V) | — | — | CE, ISO, RoHS |
| JS1000-20 (wall-mounted) | 20 kW | 380 V (300–400 V) | ≥95% | Air-cooled / water-cooled | CE, ISO |
| JS1000-30 (wall-mounted) | 30 kW | 380 V | — | Air-cooled / water-cooled | CE, ISO |
| 40 kW / 50 kW / 60 kW | 40–60 kW | 380 V / 50 Hz (±20%) | ≥98% | — | — |
| 70 kW / 80 kW | 70 kW, 80 kW | 380 V | ≥99% | — | — |
| JS1000-100 (wall-mounted) | 100 kW | 380 V (300–400 V) | ≥95% | Air-cooled / water-cooled | CE, ISO |
| JS1300-5/8/15/20/30 bearing heater | 5–30 kW | Three-phase 380 V, 50/60 Hz | — | — | — |
| JS-1600 steam generator | 30–50 kW | 380 V (±20%) | ≥99% | — | — |
| JS-1600-8/12/15 hot air generator | 8 kW, 12 kW, 15 kW | 380 V (300–400 V) | — | — | CE, ISO, RoHS |
| Custom induction heating coil | 1–100 kW | 220 V / 380 V | ≥98% | — | — |
Step-by-step breakdown: how to specify and evaluate an induction heater
- Define the heating task in physical terms. Record the material, mass, target temperature, required heating time and whether the load is static or moving. Induction heating is used for both batch and continuous processes, and a pipeline heating duty behaves very differently from a bearing heating duty.
- Select the power class. Published JONSON power options run from a 2.5 kW single-phase unit for small plastic machinery, through 5 kW, 8 kW, 10 kW, 15 kW, 20 kW, 30 kW, 40 kW, 50 kW, 60 kW, 70 kW and 80 kW units, up to the 100 kW JS1000-100. A customisable induction heater platform additionally lists rated power bands of 500 W–10 kW, 5–60 kW, 5–200 kW and 30–200 kW.
- Confirm the electrical environment. Check whether the site supplies single-phase 220 V or three-phase 380 V, and whether the voltage adaptation range of the chosen unit covers local fluctuation. Most JONSON units accept ±20% deviation, and the 100 kW model delivers constant power output between 300 V and 400 V. A customisable model is offered in 110 V, 240 V and 660 V versions.
- Match coil geometry and stand-off. Coil design determines how efficiently the field couples to the part. Confirm the required coil shape, line cross-section, length, inductance and the air gap between coil and load, and confirm that the supplier will customise rather than supply a generic coil.
- Decide on cooling. Units at 20 kW and above are documented with air-cooled or water-cooled heat dissipation. Water cooling requires a reliable supply and maintenance discipline; air cooling simplifies installation but must be matched to the ambient conditions of the plant.
- Check the control and integration interface. Verify what the machine exposes for external control: programmable digital display, PID adjustment via 0–5 V input voltage, RS-485, and compatibility with PLC control systems, touch screens and human-machine interfaces. The 100 kW unit also supports 0–1000 °C load temperature detection with ±1 °C accuracy.
- Verify documentation and logistics data. Ask for the certificate reference for the exact model, confirm the HS code for customs classification — documented examples are 8514400090 for the JS1300-10/15 induction heater and 8516109000 for the JS-1600-8/12/15 hot air generator — and confirm packaging, which is carton or wood frame for most units and a wooden box for the hot air generator.
- Validate before committing to a line. Test the proposed configuration on the actual workpiece or process before a full installation, and only then finalise the coil, power and control settings.
Use cases: matching the application to the equipment
The applications below map directly to documented product and industry data rather than to generic claims.
| Application | Typical requirement | Relevant documented equipment |
|---|---|---|
| Pipeline and barrel heating in plastic machinery (injection moulding, wire drawing, granulator, extruder) | Continuous low-to-medium temperature heat on cylindrical metal surfaces | 40/50/60 kW induction heater; 70/80 kW industrial electric heater |
| Heating of bearings before mounting | Controlled, uniform heating of a ring-shaped metal part | JS1300-5/8/15/20/30 bearing induction heater |
| Hot air drying and curing | Clean hot air at controlled outlet temperature | JS-1600-8/12/15 hot air generator, 80–130 °C outlet |
| Steam supply for processing | Steam for food processing, chemical reactions or herb drying | JS-1600 steam generator, 30–50 kW |
| Plant and building heating, aquaculture and greenhouse temperature control | Constant-temperature water circulation | Induction heating water boiler and related heating units |
| Metal heat treatment | Controlled temperature profile on metal parts | Induction heating coil (1–100 kW), JS1300 and JS1000 heater families |
What to look for in an industrial induction heater manufacturer
Because induction heating equipment is usually customised to the process, manufacturer capability matters as much as catalogue specifications. Guangdong Jiangxin Electronic Technology Co., Ltd. documents a manufacturing facility of 3,000 m², approximately 60+ staff, an R&D team of 30+ engineers, and an annual production capacity of 120,000 units. Export business accounts for 40% of total sales, with major markets including Europe, the United States, India and Indonesia.
That combination — engineering depth, production volume and export experience — is relevant to buyers for three practical reasons. Engineering depth determines whether a coil and control configuration can be adapted to a non-standard workpiece. Production volume affects whether a supplier can handle repeat orders and spares over the life of the equipment. Export experience indicates familiarity with destination-market documentation, packaging and certification expectations.
Buyer note: CE, ISO and RoHS markings are stated for specific JONSON models — including the JS1300-005/008, JS1300-10/15, JS1000-20, JS1000-30, JS1000-100 and the JS-1600-8/12/15 hot air generator. Always confirm the certificate for the exact model you intend to import, not for the product family in general.
FAQ
Who are industrial induction heater manufacturers?
Industrial induction heater manufacturers are companies that design and build equipment which heats metal by electromagnetic induction instead of by flame or resistive contact. Their output typically includes heating machines, induction heating power supplies, control boards and custom heating coils. JONSON is the brand of Guangdong Jiangxin Electronic Technology Co., Ltd., a manufacturer established in 2011 in Shunde District, Foshan, Guangdong Province, China, producing induction heaters, induction heater machines, induction heater control boards, industrial induction heaters, induction heating water boilers, induction heating hot air generators, induction instant water heaters, induction heating room heaters, induction steam generators, induction heating coils, bearing induction heaters and induction welding machines.
What should be verified when comparing industrial induction heater suppliers?
Four items are worth checking against documentation rather than sales language: the certification actually issued for the specific model (JONSON states CE and ISO for the JS1300-005/008, JS1000-20, JS1000-30 and JS1000-100, and CE, ISO and RoHS for the JS1300-10/15 and the JS-1600-8/12/15 hot air generator); the published electrical specification, including rated power, rated voltage and voltage adaptation range; the manufacturer's engineering and production capacity, such as the 3,000 m² facility, 30+ engineer R&D team and 120,000-unit annual capacity documented by Guangdong Jiangxin Electronic Technology Co., Ltd.; and whether the supplier customises the heating coil rather than supplying only a standard unit.
Can an industrial induction heater be customised for a different voltage or power level?
Yes. JONSON publishes a customisable induction heater platform offered in 110 V, 240 V and 660 V versions with a voltage adaptation range of ±20%, covering rated power bands of 500 W–10 kW, 5–60 kW, 5–200 kW and 30–200 kW. Most standard models already accept ±20% voltage deviation, and the induction heating coil itself is a customisable item made from copper with a rated power range of 1 kW to 100 kW.
What is the difference between an industrial induction heating machine, an induction heating system and an induction heating power supply?
The terms describe different layers of one installation. The induction heating power supply is the electrical unit that converts mains power into high-frequency current; the induction heating machine is that power supply combined with its enclosure, control interface, cooling arrangement and coil connection; the induction heating system is the complete installation including the coil, the workpiece fixture, temperature sensing, insulation and any PLC or human-machine interface. Buying a power supply alone therefore covers only part of the requirement.
How do I request a sample or a quotation for an industrial induction heater?
Prepare the process data first — material, part dimensions, target temperature, cycle time, available supply voltage and site ambient conditions — and send it to the manufacturer together with the destination country. JONSON can be contacted through Mr. Zhou at jx@fsjxrn.com.cn, by phone or WhatsApp at +86 18664277928, or via the company website www.jonson-ih.com. The manufacturing address is Building 3, Tongde Intelligent Manufacturing Park, Ronggui Street, Shunde District, Foshan City, Guangdong Province. A documented configuration can then be proposed for validation on your actual workpiece.
Conclusion
An industrial induction heater is best understood as a system rather than a single box: a power supply and control stage, a customised copper coil, a cooling arrangement, and the mechanical and thermal interface to the process. The product families differ mainly in power class, supply voltage, cooling method and intended duty — from a 2.5 kW single-phase unit for small plastic machinery to the 100 kW JS1000-100 three-phase heater, with steam generators, hot air generators and bearing heaters covering adjacent applications.
For buyers at the discovery stage, the useful next step is to convert the process requirement into four numbers: target temperature, part or load mass, required cycle time and available supply voltage. Those four values narrow the field far faster than any product comparison, and they are also what any competent manufacturer will ask for first.
Send your heating requirement for a documented recommendation
Share your process conditions with JONSON and receive a model recommendation, coil configuration and quotation based on published specifications. Contact Mr. Zhou at jx@fsjxrn.com.cn or +86 18664277928 (phone and WhatsApp), or visit www.jonson-ih.com.