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Low-temperature cyaniding of cylinder block sleeves

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We recommend the following heat treatment for the cylinder sleeves of certain tractor and automobile engines; it ensures a high wear resistance and does not induce warping: a) annealing for stress relief, with heating at 75–100 deg/h to 580–600°C, soaking, cooling at the rate of 40–50 deg/h to 200°C; final machining, including honing; b) gas cyaniding 6 h at 560–580°C in a medium of 70% carburizing gas and 30% ammonia.

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Literature cited

  1. 1.

    E. N. Druzhinina, Repts. Jubilee Sci.-Tech. Meet. Bauman MVTU [in Russian], Mashgiz, Moscow (1955).

  2. 2.

    E. N. Druzhinina, In: Increasing the Durability of Machine Parts [in Russian], Mashgiz, Moscow (1959).

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Additional information

Bauman MVTU, Moscow Automobile Plant. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 60–62, July, 1967.

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Druzhinina, E.N., Lakedemonskii, A.V., Abramenko, Y.E. et al. Low-temperature cyaniding of cylinder block sleeves. Met Sci Heat Treat 9, 540–542 (1968).

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  • Ammonia
  • Heat Treatment
  • Wear Resistance
  • Hone
  • Stress Relief