Well Type Vacuum Annealing Oven

I Description of vacuum annealing oven

This furnace is annealing, tempering and other heat treatment purpose.

Composition:

1) One well-type heating furnace body

2) Two stainless steel internal furnaces

3) One PID control panel

4) One 2X-30 vacuum pump system

II Main technical data

2.1 Internal furnace effective size: Φ1000 x 1500mm (H)

2.2 Max. heating temperature: 750℃

2.3 Working temperature: 500~550℃

2.3 Heating power: 90kW

2.5 Temperature control sections: three (upper, middle and lower sections of internal furnace)

2.6 Temperature control precision: +/-2℃

2.7 Temperature evenness inside furnace: +/-5℃ (in the later stage of temperature keeping)

2.8 Max. temperature rise on furnace outer cover: 35℃ + ambient temperature

2.9 Max. one-time loading capacity: about 2.5T

2.10 Vacuum pump: 2X-30 rotary vane, pump power 5.5kW, exausting speed 70L/s.

2.11 Noise level: 80dB

III Structure of the furnace

3.1 Well-type heating furnace body:

- Bottom is made by 12mm steel

- Surface is 20mm steel plate

- Shell is reinforced by 5mm channel steel

- Furnace lining is 400mm thick formed high temperature resistant ceramic fiber bricks, covered by one layers 20mm thick ceramic fiber felt

- Furnace bottom is covered by light alumina bricks

- Heating component is Cr20Ni80 flat belts, wave-shaped fixed on inside wall by ceramic nails

3.2 Stainless steel internal furnace

- Both body and bottom head are made by stainless steel SUS310, 10mm thick; bottom is dished end shape for higher pressure.

- Furnace top cover and flange are made by 30mm thick Q235 steel, equipped with water-cooling sleeves for protecting rubber seals

- Gas filling is from bottom, stainless steel valves

- Top cover is equipped with vacuuming pipeline, gas drainage valve, vacuum pressure meter and safety valve.

- Inside have thermocouples, 3 sets controlling temperature

3.3 Control panel

- PID controller

- Power adjuster

- Non-paper recorder

- Vacuum pump controlling