Metal Science and Heat Treatment

, Volume 14, Issue 6, pp 493–497 | Cite as

Rapid carburizing with natural gas in a fluidized bed

  • T. A. Pumpyanskaya
  • V. A. Vinokurov
  • A. P. Baskakov
Chemicothermal Treatment


  1. 1.

    Carburizing with combustion of natural gas in a fluidized bed with a stationary catalyst and air input coefficient α<0.25 is not possible because the GIAP-3 catalyst is deactivated by soot.

    When α=0.26–0.29 the carburizing capacity of the atmosphere is insufficient to carburize carbon and alloy steels.

  2. 2.

    In order to increase the carbon potential of the atmosphere with α=0.26–0.29, 15–25% gas-carburizer must be added.

  3. 3.

    The carburizing time for a case depth of 1.0–1.2 mm is 1.5 h at 950°C with the addition of raw natural gas. The high rate of the process is due to the rapid heating and more favorable conditions of the surface for carburizing in a fluidized bed.



Atmosphere Combustion Favorable Condition Alloy Steel Rapid Heating 
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Literature cited

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Copyright information

© Consultants Bureau, a division of Plenum Publishing Corporation 1972

Authors and Affiliations

  • T. A. Pumpyanskaya
  • V. A. Vinokurov
  • A. P. Baskakov

There are no affiliations available

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