A,  working principle

      By using the principle of electromagnetic induction, a strong current is introduced into the induction coil to generate an induction current inside the charge in the alternating magnetic field, thereby heating the charge to an induction heating device.

B,Equipment composition

1. Medium frequency power supply KGPS-160KW-2.5KHz

2. Water-cooled furnace body

 Note: The water-cooled furnace body is divided into inner and outer cylinders, which are made of a whole piece of steel plate. The inner cylinder body is made of stainless steel, and the outer cylinder material is Q235 . The head is made of standard head, the inner head is stainless steel, and the outer head is Q235 . The manufacturing methods and requirements are all in accordance with the provisions of GB150-89 

3. Temperature control system and external operation cabinet .

4. Work platform (with stairs on both sides) .

5. Pre-vacuum system

C . The main technical indicators and functions

     1. Working temperature: 2300 °C

     2. Heating body material: tungsten

     3. Heating body size Φ 370mm (inside diameter) h=700mm

     4. Intermediate frequency power supply

  (1 ) Power supply voltage: 380v; 50HZ;   three-phase four-wire

  (2 ) Maximum output power: 160KW

         (3)  Maximum output voltage: 750V

         (4)  Maximum operating frequency: 2500Hz

      5. The temperature uses two independent temperature measurement systems consisting of Wre5-26 thermocouple and non-contact optical fiber sensing thermometer .

      6. It adopts hydrogen protection, the flow rate is adjustable, and the hydrogen outlet is provided with slag discharge port .

C , security protection function

1. It has over-current, over-pressure, phase loss, and insufficient cooling water pressure protection.

2. With over temperature protection.

3. With power failure alarm function.

4. With hydrogen explosion-proof function.

D , water supply system

 1. Water quality parameters.

       Water pressure ≥ 0.2-0.4Mpa.

       Effluent temperature < 55 °C

 Inlet water temperature < 5-35 °C

 Hardness CaO                         < 10mg equivalent

 Acid-base ph = 7-8.5

       Suspended solids < 10mg/L

       Water resistance > 2.5K Ω

 Iron containing < 2mg

      2. Pool volume

     Multiplied by the total power 4-0.05 take . If space is limited, when the small tank volume, can be added cooling towers. When the volume can be guaranteed, it is better to add a cooling tower to the south of the Yangtze River. North of the Yangtze River, may not be considered properly.

 3. Water lift

  It should be 1.5 times the distance from the pool to the equipment .

 4. Water flow

  Multiply the total power by 0.04 .    

Reference article:

Method of using medium frequency induction sintering furnace   

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