Conclusions
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1.
Complex economic alloying and modification, and optimization of the chemical composition and structure of gray cast iron is an effective means of improving the mechanical properties and wear resistance of cylinder bushings fabricated from this metal.
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2.
With the optimal total content of carbon, silicon, and alloying elements (Cr, Ni, Mo, V, Cu) and parameters of the macro- and microstructure of the metallic base and graphite (P, Pt, Pdl, 0–1.4, Gl, Graz45-Graz90, G4–G6), the modified cast SChKhNMD has sufficiently high strength properties (σb = 750–950 N/mm2, σ−1 = 140–150 N/mm2, and wear resistance (I=65–75 mg/100 h, PS=17.5–20.5 N/mm2).
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Literature cited
B. M. Astashkevich and T. V. Larin, "Effect of casting defects on the fatigue-corrosion failure of cast iron sleeves," Lit. Proizvodn., No. 5, 14–16 (1973).
B. M. Astashkevich, "Effect of the quality of cast iron on the war resistance and strength of cylinder bushings in locomotive diesels," in: Improving the Reliability and Longevity of Rolling-Stock and Track Components [in Russian], Transport, Moscow (1977), pp. 93–94.
B. M. Astashkevich, S. S. Voinov, and E. A. Shur, "Laser hardening of cylinder bushings for 10D100 locomotive diesels," Metalloved. Term. Obrab. Met., No. 4, 48–50 (1985).
Additional information
All-Union Scientific-Research Institute of Rail Transport. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 31–34, July, 1987.
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Astashkevich, B.M. Strength and wear resistance of cast iron for the bushings in diesel cylinders. Met Sci Heat Treat 29, 515–518 (1987). https://doi.org/10.1007/BF01167738
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DOI: https://doi.org/10.1007/BF01167738