Conclusions
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1.
After gas nitriding of cylinder block liners for the ZIL-130 engine made of cast iron SCh24-44 at 750–570°C for 4–6 h in a mixture of 50% ammonia +50% natural gas the thickness of the nitrided layer is 0.2–0.25 mm with a carbonitride phase thickness of 15–25 μm with a microhardness of H 850–920.
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2.
The wear resistance of nitrided liners is a factor of 1.5 greater than for those produced with a Niresist insert.
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Literature cited
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Additional information
I. A. Likhachov Moscow Automobile Plant, Production Union. Scientific-Research Institute of Automobile Industry Technology. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 34–37, July, 1984.
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Goryushin, V.V., Glushchenko, V.N., Duka, N.E. et al. Short-duration gas nitriding of cast-iron cylinder block liners. Met Sci Heat Treat 26, 524–528 (1984). https://doi.org/10.1007/BF00706710
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DOI: https://doi.org/10.1007/BF00706710