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Calculation of temperature fields in large forgings with quenching in oil and rest in air

  • Heat Treatment Technology
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The model of the nonsteady temperature field during cooling in two or more media in succession makes it possible to calculate the temperature field in cylindrical forgings quenched in oil after rest in air. The largest difference in the experimental and calculated values of the temperatures of surface layers is ≤40°. Almost no differences in the experimental and calculated values of the cooling time were observed.

  2. 2.

    The quenching time in oil may be shortened by 10–40 min due to rest in air for as long as 90 min, depending on the diameter of the forging.

  3. 3.

    Rest in air reduces the maximum temperature gradient from the surface to the center of forgings. For forgings 200–900 mm in diameter the maximum temperature gradient is reduced most in the first hour at rest. For forgings larger than 900 mm in diameter the time at rest can be longer than 90 min.

  4. 4.

    For forgings varying in diameter the time at rest is determined from the smallest diameter and the quenching time in oil from the largest diameter.

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Literature cited

  1. Yu. A. Bashnin et al., Heat Treatment and Properties of Large Forgings [in Russian], Metallurgiya, Moscow (1973).

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Authors
  1. V. A. Gurenko
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  2. P. E. Alekseev
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 12–18, September, 1978.

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Gurenko, V.A., Alekseev, P.E. Calculation of temperature fields in large forgings with quenching in oil and rest in air. Met Sci Heat Treat 20, 705–709 (1978). https://doi.org/10.1007/BF00703747

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  • DOI: https://doi.org/10.1007/BF00703747

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