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item Pro-nitriding
Dimension periphery 6745(L)X1749(W)X2447(H)
availability 955(L)X510(W)X455(H)
Heating        capacity regular temp. 500~590℃
max. temp. 800℃
temp. control 430℃±5℃, 600℃±5℃ both with and without products at each         9 position
work weight  320kg (gross) max.
heat up time 1.within 2 hr from room temp. to 600℃ without products
2.within 1 hr after put products in the furnace to 600℃
electric power 29.2kw
Heater material PYROMAX with heat resistant alloy tube mounting
quantity total 16pcs (8 pcs each side)
Combustion  chamber retort material sus310
thickness 5mm cylinder shape
external material steel
ceramic fiber filling up inside and lagging outside
circulating fan 1.5kwx4P ,1500rpm
SCH-15 heat resistant steel
entrance door steel with ceramic board and ceramic coating
up-down by air cylinder
 
fire curtain flame with auto ignition by solenoid valve
pilot burner with fire detector
middle door steel with ceramic board and ceramic coating
up-down by air cylinder
be tighly by air cylinder
rollers and rail SCH-15 heat resistant steel  T type rail
Cooling    chamber spec. with ceramic coating
circulating fan  2.2kwx4P
exit door thick steel sheet with annealing and ceramic coating
up-down by air cylinder
fire curtain flame with auto ignition by solenoid valve
pilot burner with fire detector
cooling time within 1Hr from 600℃ to 100℃
Gas             consumption N2 7 Nm3/Hr
NH3 4 Nm3/Hr
Seasoning time 30 min from start to flow gas till seasoning finish
Entrance transfer   push by 0.75kw motor and worm reduction gear
  go up and down by air cylinder
Exit transfer   move by 0.4kw geared motor
Flow meter NH3 1.5~15Nm3/Hr    1set
shut off by solenoid valve when furnace temp. or gas pressure go down
N2 1.2~12Nm3/Hr    2set
Air 0.3~3Nm3/Hr    1set
Thermocupple furnace K thermocupple  2 sets on the roof
K thermocupple  1 set on the side surface
cooling chamber K thermocupple  1 set on the roof
Gas supply N2 280 mmAq        12Nm3/Hr
NH3 280 mmAq          8Nm3/Hr
C4H10 700 mmAq        8.5Nm3/Hr
Gas distribution       system    
   

 Control system

PLC

control limit switch,solenoid valve,relay,temp.meter,timer,motor, curtain flame,etc. by PLC. Use 2 sets of shift register.
others 1set of temp. controller, 1set of temp. recorder,                           
2 sets of temp. meter for alarm in the furnace                                     
4 sets of timer such as soaking, N2 purge start, cooling, air
 Alarm emergency stop switch are in front of furnace and at the back
cooling fan stop when termal relay of fan mortor will be on or switch on heater during circurattion fan be off.
pilot burner out when fire detector find to go out
overheating from temp. meter-1 in the furnace
temp. abnormal from temp. meter-2 in the furnace
SCR abnormal from thyristor alarm
gas pressure when gas pressure go down
N2 pressure when N2 pressure go down
NH3 pressure when NH3 pressure go down
motion abnormal door,transfer moving alarm from time over
battery abnormal the voltage of backup battery go down
PLC abnormal alarm from PLC

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