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歯科

Annealing After Laser Sintering

LH 60/12 with manual lift door and protective gas box for non-flammable protective or reactive gases Chamber furnace LH 30/12

Cooling fan in combination with motor-driven exhaust air flap to reduce cooling time

Gas supply system for non-flammable protective or reaction gases

The models LH 15/12 - LH 60/12 have proven themselves for many years as professional chamber furnaces. For stress relief annealing after laser sintering, the furnaces are equipped with a protective gas box for non-flammable protective gas, e.g. argon, and a manual protective gas supply with solenoid valve. The design with gas supply box is a cost-effective alternative to retort furnaces and is suitable for many processes. The batch to be annealed is wrapped in annealing/hardening foil during the process to protect it from oxidation and decarburization. To protect the bottom insulation of the furnace from mechanical stress, a charging plate is required when using a gas supply box.

  • Tmax 1200 °C
  • Recommended operating temperatures up to 1100 °C, at operating temperatures up to 1150 °C increased wear of the protective gas box must be expected
  • Dual shell housing with rear ventilation, provides for low shell temperatures
  • High furnace chamber with five-sided heating for very good temperature uniformity
  • Heating elements on support tubes ensure free heat radiation and a long service life
  • Multi-layered insulation of light refractory bricks and special backup insulation
  • Self-supporting arch for high stability and greatest possible protection against dust
  • Motor driven exhaust air flap
  • Adjustable air inlet in furnace floor
  • Base included
  • Protective gas boxes for inert gas atmosphere with additional thermocouple, type K
  • Solenoid valve, controlled via the extra function of the controller P470
  • Charge control for measuring the temperature directly at the load in the gas supply box
  • Charging plate and annealing and hardening foils
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
ModelTmax
furnaceInner dimensions protective gas box in mmVolumeOuter dimensions in mm3HeatingElectricalWeightMinutes
to
 °Cwdhin lWDHpower in kWconnection*in kg1100 °C2
LH 15/1212001001001001568086012305.03-phase117044
LH 30/1212001701701703071093012907.03-phase120060
LH 60/12120025025025060790108013708.03-phase30085
1Heating only between two phases *Please see page 22 for more information about supply voltage
2If connected at 230 V 1/N/PE rsp. 400 V 3/N/PE
3External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
 

Chamber furnace N 41/H Chamber furnace N 7/H with protective gas box

Chamber furnaces N 7/H - N 41/H with their low but deep furnace chamber are particularly suitable for smaller batches. The process in these furnaces can be carried out exactly as in the chamber furnaces LH 15/12 - LH 60/12.

  • Tmax 1150 °C
  • The recommended working temperature is max. 1100 °C. Higher wear and tear of the protective gas box has to be expected at higher working temperatures up to 1150 °C
  • Deep furnace chamber with three-sides heating: from both side walls and bottom
  • Heating elements on support tubes ensure free heat radiation and a long service life
  • Bottom heating protected by heat-resistant SiC plate
  • Multi-layer insulation with high-quality lightweight refractory bricks in the furnace chamber
  • Exhaust opening in the side of the furnace, or on back wall of chamber furnace in the N 41/H models and higher
  • Chamber furnaces N 7/H - N 17/HR are designed as tabletop models
  • Base included with chamber furnace N 41/H
  • Protective gas boxes for inert gas atmosphere with additional thermocouple, type K
  • Solenoid valve, controlled via the extra function of the controller P470
  • Charge control for measuring the temperature directly at the load in the gas supply box
  • Charging plate and annealing and hardening foils
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
ModelTmaxInner dimensions protective gas box in mmVolumeOuter dimensions in mm3ConnectedElectricalWeightMinutes
 °Cwdhin lWDHload kWconnection*in kgto Tmax2
N 7/H11501801909098006506003.01-phase60180
N 11/H115018029090118007506003.51-phase70180
N 11/HR115018029090118007506005.53-phase170120
N 17/HR115018044090178009006006.43-phase190120
N 41/H11502803802004110401250134015.03-phase260120
1Heating only between two phases *Please see page 22 for more information about supply voltage
2If connected at 230 V 1/N/PE rsp. 400 V 3/N/PE
3External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.