Medium Frequency Induction Heating Machine
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  • 500-1500KW Frequency Converter

  • 500-1500KW Frequency Converter

  • 500-1500KW Frequency Converter

  • 500-1500KW Frequency Converter

  • 500-1500KW Frequency Converter

500-1500KW Frequency Converter

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Power: 350--1500KW

Work Frequency: 0.5-8Khz

Big power inductive heating machine with national patents for big mould indution heating, work stable and good performance at steel bar hot forging

Technical information

Product Detail:

1. Good start up performance: IGBT MF induction power supply apply series resonance technology so it can be starts up 100% under any condition.

2. Less indterface to power grid: Less harmonic current and high power factor, Power factoer remaining 0.95 above during machine running.

3. Low energy consumption: in series resonant circuit, voltage at inductor high and current low so energy loss is very low ;Soft switch technology applied then switch loss is very low.

4. Water cooled by heat exchanger: Using distilled water as circulating water to avoid sediment and clog of hose.

5. Good reliability: IGBT is a self turn-off transistor that ensures incersion with suvvess and takes protection instantly; IGBT used form Infineon world-renowned manufacturer.

6. High conversion efficiency more than 97.5%: IGBT(Insulated Gate Bipolar Transistor)inversion technology.

7. Energy saving up to 15%-30% compared with SCR technology induction machine: LC series resonance circuit and voltage feedback design, low energy comsumption.

8. Cooper &stainless steel fasteners and radiator, better cooling and anti-electrolysis.

9. Integrated design with water cooler, inductor, feeding system and three chanel sorting system, infrared sensor, less space for installation.

10. Good reliability, prefect protection system, reliable components, soft switch technology.

11. Customized local input power, 400V+/-10% 50Hz or 600V 60 Hz.

Technical Information

MFP100D2160D2250D2350D2500D2600D2750D21000D21250D21500D2
Rated output power100KW160KW250KW350KW500KW600KW750KW1000KW1250KW1500KW
Power capacity140KVA230KVA340KVA450KVA610KVA750KVA930KVA1250KVA1500KVA1900KVA
Input current150A240A375A525A750A1000A1125A1500A1875A2250A
Frequency range0.5-10Khz0.5-10Khz0.5-10Khz0.5-8Khz0.5-8Khz0.5-6Khz0.5-6Khz0.5-4Khz0.5-4Khz0.5-4Khz
Input power380V/50 Hz 3 phase 4 line (1 neutral line)
Input cooling water pressureAbove 0.1Mpa

Feature

1: For billet full preheating or local induction heating before hot forging or forming, diameter range wide up to 200mm.

2: Pneumatic pusher, chain delivery system, pick up system three channel and Infrared thermometer system are available.

3: Well designed winding process and high quality copper tube brings result of high efficiency and energy saging.

4: Quick change connection enables replacement heating furnace conveniently.

5: PLC to realize the automatic, save labor and improve the production.

Why Choose Us

1. More than 30 years of experience in induction heating industry

2. Free test for choosing the inductin heating machine model before make decision

3. Induction heating system design research develop and maintain by the Duolin Engineer team, lifetime offer spare parts and maintain

4. Test the machine as customer heating requirements and aging hours to guarantee the good quality

5. Offer installation manual and troubleshooting guide

6. Use famous brand components Infineon Omron Schneider to ensure quality of material


Duolin, founded in 1994, is a trusted manufacturer of induction heating machines and solutions. Offering equipment with power ranges from 4-2000KW and frequencies from 0.5-400KHz, all products are designed by Duolin's expert engineering team and produced under strict ISO9001:2015 standards. As a high-tech enterprise, Duolin holds more than 20 national patents, providing energy-efficient and reliable induction heating systems for industries worldwide.


Duolin's induction heating solutions are widely used for applications such as carbon steel hot forginggear shaft hardeninglong bar heat treatmentpipe heating for hot bending, and non-ferrous metal heating like aluminum and copper. 


Technical Advantage

1. Research, design and produced under ISO 9001: 2015 by Duolin team, quality and delivery time under control.

2. Machine cabinet sealing, protect the induction heating equipement under complex working environment.

3. Door switch design for safety.

4. Less interference to the power grid, do not need compensation capacitor: High power factor-more than 0.95.

5. Induction heating euipment start under any condition 100%.

6. DSP and HMI technology, display the machine work data and indicate the fault output.

7. 0-10v or 4-20ma signal offered for automatic production line.

8. Intelligent control system, PLC control, connect with factory MES system site management, provide base for modern management of enterprises.

Application and Industry

Induction heating is widely used on automotive industry, oil and gas industry, fasteners manufacture, tube and pipe heating, ship building industry, package sealing industry, wire and cable heating, spring making.....

 

1. Billet hot forging Plant, full heating and local heating, diameter 50-200 mm

2. Heat treatment plant, for gear, pin shaft, automotive parts inuction hardening

3. For copper tube, saw blade machine tool brazing, pipe heating for bending and coating

4. Induction heating for shrink fitting, annealing, normalizing

5. Other induction heating industry

Our Services

1. Pre-sale service

◎ Depending on the heating requirements, offer professional suggestion on machine power and work frequency 

◎ Turnkey induction heating project layout to help customer plan the installation space

◎ Sample testing support, free coil design as the parts dimension

◎ On line meeting to discuss the most suitable heating solution for customer


2. In-sale service

◎ Produce the machine and test the machine in factory, send customer video.

◎ Each machine check the quality and aging testing in factory for 8 hours ensure the stable work

◎ Offer to door shipping service if customer is the first time import from China

◎ Delivery the machine on time, customs clearance


3. After-sale service

◎ 1 year warranty, if machine in non-artificial fault, can repair and offer spare parts free

◎ Electric and water connection installation service, daily operate and training service if customer need engineer to help installation in their factory

◎ Online video meeting to help installation freely, repair the machine and offer spare parts in machine service time

◎ Induction heating equipment develop and the production line improve

◎ Offer manual and installation guide, trouble shooting guide 

FAQ

1. Which countries your products are exported to?
More than 56 countries installed more than 3000 set machine, agent in 10 countries

2. What is your advantage?
International trade since 2009, manufacture induction heating machine since 1994, much experience in induction heating.All the products are research, design and develop by the Duolin engineer team, electric engineer, mechanical engineer, coil design engineer, application engineer..

3. How to install your machine?
Offer customer pictures, videos and document for installation.Engineer are available if customer need help to install in the factory

4. Which port for export?


We can send machine to any port in China, but normally Shenzhen, Shanghai, Ningbo, Guangzhou, we will arrange things under customer instruction.


5. How about the delivery time and stock?


We have machine in stock for HFP-20 and SSF model, need about one week for coil making, test the machine and package.

For medium frequency big power machine, it is the customized model, production time is around 1 month

6. What is your nature of your company: Dealer or factory?
DUOLIN is an old brand for induction heating equipment in China.We have own factory, bought the land and built the factory, not rent. 77 employees, it is large-scale company in chinese induction heating machine factory.

FAQ

What is your nature of your company: Dealer or factory?

DUOLIN is an old brand for induction heating equipment in China. We have own factory,bought the land and built the factory, not rent. 79 employees, it is large-scale company in chinese induction heating machine factory.

How about the delivery time and stock?

We have machine in stock for HFP-20 and SSF model, need about one week for coil making, test the machine and package.

For medium frequency big power machine, it is the customized model, production time is around 1 month.

Which port for export?

We can send machine to any port in China, but normally Shenzhen, Shanghai, Ningbo, Guangzhou, we will arrange things under customer instruction. 

How to install your machine?

Offer customer pictures, videos and document for installation. Engineer are available if customer need help to install in the factory.

What is your advantage?

International trade since 2009, manufacture induction heating machine since 1996, much experience in induction heating. All the products are research, design and develop by the Duolin engineer team, electric engineer, mechanical engineer, coil design engineer, application engineer..

Which countries your products are exported to?

More than 56 countries installed more than 3000 set machine, agent in 10 countries.

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Contact Us

+86 28 8393 0607

+86 158 8242 2821

112th Hancheng Road Xindu Industrial Zone Chengdu China

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Customized Turnkey induction heating machine

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