Additív gyártás /
Szigetelt keringető kamrás kemencék NA-I és NA-SI

Sealed Forced Convection Chamber Furnaces NA-I and NA-SI

Forced convection chamber furnace NA 120/65 I Forced convection chamber furnace NA 15/65 I as tabletop model with manual gas supply system

Sealed forced convection chamber furnaces are suitable if a heat treatment process up to 650 °C requires a protective gas atmosphere that does not have to be completely oxygen free. The difference between the two variants is that the I-model only has a sealed outer housing while the SI-model has a welded inner box, which further reduces the residual oxygen concentration.

NA-I design 
Like forced convection chamber furnaces < 675 l (page 42) with the following changes

  • Tmax 450 °C and 650 °C
  • Silicone door seal
  • Furnace housing sealed with silicone
  • Protective gas connection in the back wall
  • Defined application within the constraints of the operating instructions
  • Residual oxygen concentration < 1 % depending on the volume and type of protective gas
  • For non-flammable protective and reaction gases such as argon, nitrogen, and forming gas (national regulations must be considered)

NA-SI design 
Additional features

  • Tmax 650 °C
  • Welded inner housing
  • 2-sided heating and air circulation
  • Door sealed with seal gas
  • Sealed connection to circulation motor
  • Gas inlet via circulator shaft
  • Defined application within the constraints of the operating instructions
  • Residual oxygen concentration to 0.1 % depending on the volume and type of protective gas
  • For non-flammable protective and reaction gases such as argon, nitrogen, and forming gas (national regulations must be considered)
ModelTmaxInner dimensions in mmVolumeOuter dimensions4 in mmHeatingElectricalWeight
 °Cwdhin lWDHpower in kW3connection*in kg
NA 30/45 I45029042026030104012901385 3.01(3)-phase285
NA 60/45 I45035050035060110013701475 6.03-phase350
NA 120/45 I450450600450120125015501550 9.03-phase460
NA 250/45 I450600750600250135016501725 12.03-phase590
NA 500/45 I4507501000750500155019001820 18.03-phase750
NA 675/45 I4507501200750675155021001820 24.03-phase900
            
NA 15/65 I1650295340170154707904602.81-phase60
NA 30/65 I65029042026030870129013855.03-phase2285
N A 60/65 I (SI)65035050035060910139014759.03-phase350
NA 120/65 I (SI)6504506004501209901470155012.03-phase460
NA 250/65 I (SI)65060075060025011701650168020.03-phase590
NA 500/65 I (SI)650750100075050012901890182527.03-phase750
NA 675/65 I650750120075067512902100182527.03-phase900
1Table-top model*Please see page 73 for more information about supply voltage
2Heating only between two phases 3Depending on furnace design connected load might be higher
4External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.