| 摘要 |
PCT No. PCT/EP94/03353 Sec. 371 Date Apr. 26, 1996 Sec. 102(e) Date Apr. 26, 1996 PCT Filed Dec. 10, 1994 PCT Pub. No. WO95/11999 PCT Pub. Date May 4, 1995Annealing is performed in the annealing chamber (2) of the annealing furnace (1) under a protective gas atmosphere. A partial-stream cleaning device (3) for the protective gas is connected to the annealing chamber. The protective gas can be cooled, the condensate forming from water vapour and rolling oil residues is then separated and/or undesirable gas components are removed by adsorption. Once the cleaning process has been running for so long that the protective gas essentially no longer contains any rolling oil residues, the protective gas may be passed through a hot reaction chamber (4) in which oxygen is removed from it so that the dew point drops and easily oxidised alloying components of the annealing charge are protected against oxidation.
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