undefined
02
2026
-
01
Jinruihang High-Frequency Induction Heater: An Industrial Innovation Redefining Metal Processing Efficiency
Author:
Jinruihang's high-frequency induction heating technology rapidly heats metal with precision, improving efficiency and reducing energy waste.
While a traditional acetylene torch takes 3 minutes to heat a 20mm iron pipe, the Jinruihang High-Frequency Induction Heater can raise the metal temperature to 1000℃ in just 5 seconds. This is not a theoretical lab demonstration, but a proven solution deployed in real-world industrial metalworking scenarios at construction sites. Temperature-sensitive patches show the readings soaring rapidly, and red-hot metal pipes can be flexibly processed by workers—all powered by a ring-shaped induction coil no bigger than the palm of your hand.
The core principle of high-frequency induction heating is rooted in electromagnetic induction technology, sharing a similar logic with microwave ovens that heat water molecules through self-generated thermal energy. A 400kHz high-frequency current passes through the coil to generate an alternating magnetic field, driving free electrons inside the steel to move at high speed and collide with each other to produce heat, thus achieving rapid temperature rise of the metal. Field data from a steel bar processing plant shows that the moment a U-shaped induction coil is attached to a 4mm steel plate, a distinct rainbow-colored temperature gradient band appears on the metal surface instantly. The heating boundary accuracy can be controlled down to the hairline level, while the metal outside the heating zone remains at room temperature with its original hardness intact. This precision heating and targeted temperature control feature completely addresses the longstanding industry pain points of traditional flame heating, such as wide heat diffusion range and severe energy waste.
Field test data from construction groups provides tangible proof of the efficiency advantages of high-frequency induction heating:
- Threaded steel bars with a hardness of HRC35 can be softened to HRC20 within 4 seconds after heating, meeting the requirements of bending processes.
- The qualification rate of bending procedures has increased by 5%, saving 2.3 hours of subsequent straightening work per ton of steel.
- Equipped with an infrared temperature measurement system with ±3℃ accuracy, heating temperature is digitally controlled with precision, replacing the traditional experience-dependent method of "judging temperature by observing flame color".
In a production workshop in Hebei, red-hot steel bar sections finish bending while non-processed areas start cooling naturally. With a processing cycle of 8 seconds per piece, it stands in stark contrast to the 15-minute preheating time required by traditional resistance furnaces, significantly shortening the overall production lead time.
Today, Jinruihang’s high-frequency induction heating technology has been integrated into processing links across multiple industrial chains:
- Automobile factories use micro-coils to precisely repair millimeter-scale dents at welding joints.
- Sheet metal workshops employ 50mm-sized coils as "metal irons" to shape metal plates.
- For the thermal disassembly of underwater bolts, the equipment can accurately heat the bolts without affecting the temperature of the surrounding water.
In international comparative tests, field measurements by a Dubai-based contractor showed that under the same operating conditions, Jinruihang’s equipment delivers far superior power performance compared to similar German products, establishing a performance benchmark in the industrial induction heating sector with independently developed innovative technology.
High-Frequency Induction Heater,induction coil、high-frequency induction heating,induction heating,high-frequency induction heating technology,thermal disassembly,industrial induction heating
Related News
Dongguan Jinruihang Technology Co., Ltd.
Contact Person: Amanda Lin
Email: Jinrui-sales@jinruihang.com
Company Address: No. 7, Lane 3, Haomai Road, Daojiao Town, Dongguan City, Guangdong Province
Follow us
Privacy Policy Powered by: CEglobal