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Heat treatment furnace facilities for the aluminum industry

HICON® drop-bottom furnaces for extruded sections

The critical factors for solution heat treating sections, tubes and rods are:

  • The charge must be heated extremely uniformly over the whole length (temperature difference lower than ± 3 K within the charge),
  • The charge must be cooled as rapidly and uniformly as possible (to prevent warping and stress within the material)
  • No sagging or damage to the normally very long, thin-walled parts.

Since the flow of atmosphere in the furnace changes direction at regular intervals and is distributed uniformly across the whole cross section of the furnace, temperature distribution is ideal, even inside very high facilities.

The following components are mounted in a turntable below the vertical furnace:

  • charge handling well
  • quenches
  • dryer

The HICON® drop-bottom furnace facility meets all the specifications of the aerospace industry regarding the speed at which each sequence is carried out (opening and moving the furnace plug, lowering the charge into the quench). Even very long charges can be processed to achieve the best possible results. EBNER has already supplied facilities to handle charges up to 20 m long.

In contrast to the vertical furnace configuration described above, it is also possible to heat treat and quench charges of this kind using a horizontal HICON® roller-hearth furnace. This furnace facility is configured in the same way to the proven HICON® roller-hearth furnace for aluminum plates and sheets.

The facility can be implemented to comply with the standards required by the automotive and aerospace industry. These standards are primarily AMS 2750E (SAE Aerospace) in the aircraft industry and CQI-9 (AIAG) for the automotive industry.  

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