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Quick Details

  • Place of Origin: Sichuan, China (Mainland)
  • Brand Name: DUOLIN
  • Model Number: MFP-350 hardening and tempering machine
  • Condition: New
  • After-sales Service Provided: Engineers available to service machinery overseas
  • Application: induction hardening and termpering
  • Work-piece: Shafts,gear,pipe&tube,etc.
  • Frequency: 0.5-10KHZ
  • Output power: 350KW
  • Input power: 380V/50Hz 3 phases 4 lines
  • Cooling: Water
  • Heating Mode: No-touch
  • Quenching vertical: PLC or CNC is available
  • Material: S.S,C.S,Alloy Steel .etc
  • Duty Cycle: 24 hour non-stop

Packaging & Delivery

Packaging Details induction hardening and tempering machine is packed in Plywood Case; Pallet packing; Polyfoam Filling; Bolt Secured Suitable for sea transport
Carton case for air is also available
Delivery Time Shipped in 60 days after payment

High performace induction hardening machine


For Gear, shaft, Pipe, Bearing, Pump fitting, steel plate, roller etc. hardening



l  Precise and fast heating for work pieces


l  Repeatability, consistency


l  Constant power or constant voltage control mode


l  Continuously working, 24 hours non-stop


l  Less interference to others equipment in workshop (Proved by CE)


l  IGBT inversion technology &LC series circuit design achieve energy saving up to 15%-30% compared with


     SCR technology


l  Easy to operate and maintain


l  Installation can be one very easily according our manual



1. Rapid precise heating minimises distortion

2.  Improved impact/wear resistance and tensile/fatique strength from surface hardening,with core properties retained. 

3.  Accurate control of depth and extent of heating.

4.  Repeatable, versatile, cost effective.

5. Less interference to others equipment in the workshop


Technique parameters


Case depth [mm]

Bar diameter [mm]

Frequency [kHz]


0.8 to 1.5

5 to 25

200 to 400


1.5 to 3.0

10 to 50

10 to 100

Ultrasonic frequency series (10-30KH)


3 to 10

Medium Frequency series(1-8KHz)

3.0 to 10.0

20 to 50

3 to 10

Ultrasonic/ Medium frequency series (10-30KH)

50 to 100

1 to 3

Medium Frequency series(1-8KHz)



Medium Frequency series(1-8KHz)


Stability & Reliability

Model:MFP-350 D2





 Successful Case


Company Information



Packaging & Shipping

Plywood case for sea transport

Our Services



1. Why DUOLIN?

◊ QUALITY IS OUR CULETURE. DOULIN put this ideal into every lines and circuit. 

2. How many years it can work?

◊ Many factors, usually 5-10years, depends on your operation, cooling water, maintenance. etc

3. How many days we got the spare parts?

◊ Usually send out in 1-2days.


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China (Mainland) | Manufacturer, Trading Company
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