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Protective Gas Boxes for Models N 30/45HA - N 500/85HA

 
  Protective gas box (open) Protective gas box with lid
 

For tempering and bright annealing, workpieces are placed in the box, the lid is locked using the sealing locks and flushed with protective gas outside the furnace for some time and then placed in the furnace. Depending on the weight, a charging trolley (page 30) is recommended.

  • For the non-combustible protective gases argon, nitrogen and forming gas 95/5 with less than 5 % H2 (observe national regulations)
  • Protective gas supply with quick lock and hose connector (outer diameter 8 mm)
  • Protective gas box with lid, protective gas supply and return line through the furnace collar
  • Protective gas outlet on the top right side
  • Sealing of lid with ceramic fiber
  • Gas connection including quick-release coupling with 3/8 inch hose sleeve
  • Made of heat-resistant alloys: 450 °C - 304 (AISI)/(DIN material no. 1.4301), 650 °C - 321 (AISI)/(DIN material no. 1.4541) or 850 °C - 309 (AISI)/(DIN material no. 1.4828)
  • Lid sealed with ceramic fiber, ceramic insulating materials can alternatively be used
  • The annealing boxes are equipped with 70 mm high stacker shoes for WS charging trolley
  • Protective gas boxes in a special dimension are required for air circulation furnaces with lift door
  • Pull lug of model N 30/45 HA - N 120/85 HA
  • Charge thermocouple type K

Additional Equipment

  • Digital temperature display
  • Protective gas systems
  • Charging trolley
Article no.FurnaceInner dimensions in mmExterior dimensions in mm
  wdhWDH
631000400 N 30/45HA 220 320 160 282 376 242
631000401 N 60/45HA 270 420 260 332 476 342
631000402 N 120/45HA 370 520 350 436 560 430
631000403 N 250/45HA 480 630 460 546 680 600
631000404 N 500/45HA 630 780 610 696 836 760
631000405 N 30/65HA 220 320 160 282 376 242
631000406 N 60/65HA 270 420 260 332 476 342
631000407 N 120/65HA 370 520 350 436 560 430
631000408 N 250/65HA 480 630 460 546 680 600
631000409 N 500/65HA 630 780 610 696 836 760
631000410 N 30/85HA 220 320 160 282 376 242
631000411 N 60/85HA 270 420 260 332 476 342
631000412 N 120/85HA 370 520 350 436 560 430
631000413 N 250/85HA 480 630 460 546 680 600
631000414 N 500/85HA 630 780 610 696 836 760
Article no. 601603960, 1 set of fiber insulation cord, 5 strips of 610 mm each

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