Protective Gas Boxes with Evacuation Lid for Models LH 15/.. - LH 216/..

These boxes have a lid for top loading, a protective gas inlet and outlet, and an evacuation cover with rubber gasket.

Function and equipment

Begasungsk_Evak_LH.jpg

Design as the described protective gas boxes, but with an additional evacuation lid. In order to reduce the residual oxygen in the box, protective gas boxes with evacuation lids can be used. These boxes have a lid for top loading, a protective gas inlet and outlet, and an evacuation cover with rubber gasket. The gas piping and the handling in the warm state corresponds to the gassing boxes on page 32. In addition, a connection for a vacuum pump via three-way ball valve is provided. In combination with a vacuum pump, the oxygen is evacuated from the box in cold state and afterwards flushed with protective gas. Repeating the process once or several times will significantly improve the results. After this process, the evacuation cover is removed and the actual heat treatment process is started under protective gas. After the heat treatment, the box is pulled out of the furnace and can be cooled in air or opened for batch removal.

  • Protective gas box with fiber sealing and lid with locks, recess for evacuation lid, gas inlet via a pipe into the bottom of the box
  • Evacuation lid with rubber sealing (Elastomer) and manometer
  • Protective gas connection via threeway ball valve and quick coupling with hose connector (inner diameter 9 mm)

Additional equipment

Additional equipment

  • Digital temperature display
  • Vacuum pump
  • Gas supply systems
  • Extended gas piping for the use of smaller boxes in larger furnace models
  • Draw hook, starting from LH 30/.. a charging cart is recommended
  • Charging stacker

Technical specifications

Article no. Furnace Inner dimensions in mm Outer dimensions in mm1 Charging method
    w d h W D H of the box
631001281 LH 15/.. 100 100 100 152 180 160 draw hook
631001282 LH 30/.. 170 170 170 222 252 230 draw hook
631001283 LH 60/.. 250 250 250 302 332 310 draw hook
631001284 LH 120/.. 350 350 350 402 432 405 draw hook
631001285 LH 216/.. 450 450 400 506 535 540 charging stacker
Article no. 601655055, 1 set of fiber insulation cord, 5 strips of 610 mm each1 Without piping and evacuation lid
Work space = box inner dimensions: - 30 mm to all sides
Larger boxes and custom dimensions available upon request

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