ISO9001:2015 CE certificate
Conscientious meticulous
Quality is the enterprise’s foundation of survival
Any products with defects are scrapped
What the Duolin people pursuit is zero defect
Having the quality crisis send of 100-1=0
I.E Design-Purchase of Raw Material-Production-Aging-Testing-Installation-After-sale service.
  • low frequency induction heating equipment

    low frequency induction heating equipment

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

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

    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

  • 250KW induction heater

    250KW induction heater

    250KW induction heating equipment with low frequency is good for big diameter billet heating and deep surface hardening.

    Drive board and IGBT connected directly, shorten signal transfer to reduce failure rate

    All fasteners are copper &stainless steel

    More water temperature&pressure monitoring,copper radiator for better cooling and anti-electrolysis

  • Integrated Induction Power Unit

    Integrated Induction Power Unit

    Good reliability: Perfect protection system, reliable components, soft switch technology

    Easy to operate and maintain: Module design and simple circuit construction

    Application in Forging,Heat treatment,Pipe bending,Hot extrusion,Braing,Shrink-fittin,Hardening etc

    Produced under ISO9001:2015 and CE certificate

    Integrated design, less installation space

  • 100-160KW low frequency induction heating generator

    100-160KW low frequency induction heating generator

    Duolin engineer team research and design separately. Machine can be used for hot forging,induction soldering, hardening and other metal related induction heating.

    Easy operate work panel to show the induction equipment work condition.

    LED lights to show the PCB board work,easy to find the problem and repair.

  • Ultrasonic frequency induction heating machine

    Ultrasonic frequency induction heating machine

    IGBT inverter used,high efficiency and low energy consumption

    Can work continuously with 100% duty cycle and set up 100% at any load

    Can replace convention heating method such as heating by flame coal salt bath gas and oil

    Work frequency 10-30Khz,power 30-250KW

    Digital display and compact design,light weight,easy for installation and operation

    Soft switch technology and prefect protection system enhance good reliability.

    Can equipped with infrared temperature detection system (Optional)

    Water cooling system ,chiller is available

  • Closed type

    Closed type

    Cooling water shall be free from impurities. DOT NOT use well water or river water .To prevent the scale formation, ensure good cooling result, and greatly reduce the failure rate,Soften Water or Distilled Water are strongly recommended as cooling water for induction equipment.

  • DI water cooling system

    DI water cooling system

    Cooling water shall be free from impurities. DOT NOT use well water or river water .To prevent the scale formation, ensure good cooling result, and greatly reduce the failure rate,Soften Water or Distilled Water are strongly recommended as cooling water for induction equipment.

     

  • High frequency induction heating machine HGP-50

    High frequency induction heating machine HGP-50

    For gear shaft pin induction hardening,depth 0.5-2 mm

    For chain induction heat treatment,hardening and tempering

  • High frequency induction heating machine HFP-20

    High frequency induction heating machine HFP-20

    Good performance at heat treatment and wire heating

    For saw blade and carbide tips machine tool and other small parts copper tube induction soldering

    Can be use for gold silver induction melting

    Repeatable reliable heating efficiency and versatile

  • Induction coil&Inductor

    Induction coil&Inductor

    With induction heating system,coil design will responsible for engineer who have more than ten year of experience in coil making.How to choose copper coil size?make suitable inductance coil to match with machine,how to improve the heating production?how to output the max power?engineer will consider all the factors.

    Send us your heating requirements,for hardening forging,brazing or other application,also send us the drawing of heating parts,we will design and produce coil for you.