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  • Pit nitriding furnace
  • 1Pit nitriding furnace
  • 2Pit nitriding furnace
  • 3Pit nitriding furnace
  • Pit nitriding furnace

Pit nitriding furnace

  • Processing capacity:300-20000kg
  • Rated temperature:500-700 ℃
  • Application:forging parts, casted parts,pressure vessel,Train railway,special steel plate,shaft,rotary parts,centrifugal fan impeller
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1. Introdution

Pit nitriding furnace is standard energy-saving cycle operation nitriding resistance furnace .

It is mainly used for nitriding treatment under the medium conditions of ammonia and methanol for all kinds of steel mechanical parts,automobile crankshaft, piston rod, mold , auto slender rods , and can also be used as general pit type heat furnace without any medium in the air .

2. Structure

It consists of furnace shell,furnace lining,heating element,furnace cover,furnace lifting device, hot wind circulation system and cooling system, atmosphere control system ,intelligent electronic control system and son on.

3. Operation cautions

The nitrogen should be firstly supplied into the furnace to exhaust the air in the furnace before heating up the furnace,the nitrogen volume for exhausting air should be at least twice than normal operation .After several minutes's exhausting ,please continue heating to exhaust air, after two hours ,constant pressure nitriding for several hours,after completion of the nitriding process ,denitrogen for 1 to 2 hours , when the temperature has dropped below 150 ℃ ,then nitrogen supply can be stopped and the workpiece can be drawn out of the furnace.

Pit nitriding furnace mainly provides necessary protection atmosphere for heat treatment process that needs nitrogen to prevent the oxidation of the surface.

Applied to nitrogen protection heat treatment of all kinds of main shaft, crankshaft, disc-shaped artifacts.Application industries include: core parts of heat treatment for automotive, mechanical processing, high-speed bullet trains, nuclear power, shipbuilding, and others.

 

Type No. Rated Power (Kw) Rated Temperature (℃) Rated Voltage (V) Phase (P) Connect way of heating element Empty furnace temperature up time(H) Empty furnace consumption power(Kw) Theory loading quantity (Kg) Working area size diameter*length (mm) Heating area (zone)
RQD-25-9 25 950 380 3 Y ≤2.5 ≤8 50 Ø300x450 1
RQD-35-9 35 950 380 3 Y ≤2.5 ≤12 70 Ø300x600 1
RQD-60-9 60 950 380 3 Y;Y ≤3.0 ≤21 150 Ø450*600 2
RQD-75-9 75 950 380 3 Y;Y ≤3.0 ≤27 220 Ø450x900 2
RQD-90-9 90 950 380 3 Y;Y ≤3.0 ≤30 400 Ø600x900 2
RQD-105-9 105 950 380 3 Y;Y ≤3.5 ≤36 500 Ø600x1200 2
RQD-130-9 130 950 380 3 Y;Y ≤3.5 ≤45 650 Ø750x1200 2
RQD-150-9 150 950 380 3 Y;Y ≤4.0 ≤54 800 Ø900x1200 2
RQD-190-9 190 950 380 3 Y;Y;Y ≤4.0 ≤66 1200 Ø1050x1500 2
RQD-230-9 230 950 380 3 Y;Y;Y ≤4.0 ≤81 2000 Ø1200x1800 3
RQD-270-9 270 950 380 3 Y;Y;Y ≤4.5 ≤90 5000 Ø1500x2100 3
RQD-285-9 285 950 380 3 Y;Y;Y ≤4.0 ≤95 1000 Ø1900x2200 3
RQD-360-9 360 950 380 3 △:△:△ ≤4.0 ≤100 5000 Ø1500x3500 3
RQD-390-9 390 950 380 3 Y;Y;Y ≤5.0 ≤135 8000 Ø2000x2500 3

Please note:the above sizes are standard products ,we can also provide customized products according to customers' requests.

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