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New technology for heat treating leaf-spring sheets for trucks

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

Conclusion

New technology and automatic equipment for heat treating leaf-spring sheets based on using induction heating, rapid cooling by a stream of water, and a specially developed steel with controllable hardenability have been developed.

The new technology makes it possible for one production example to obtain a highstrength hardened layer (σf≅2500 N/mm2), a strengthened core (σf≅1200 N/mm2), and compressive residual stresses in surface layers which in combination provide high service properties for leaf springs and the possibility of reducing their weight by 15–25%.

The new technology also makes it basically possible to automate the heat treatment process for leaf-spring sheets, to improve working conditions, and as a result of this, to exclude the use of quenching oil to improve the ecological atmosphere of the heat treatment workshop and also to exclude the work hardening operation with shot.

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Literature cited

  1. K. Z. Shepelyakovskii, Strengthening of Machine Components by Surface Hardening with Induction Heating [in Russian], Mashinostroenie, Moscow (1972).

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  2. V. D. Kal'ner, G. A. Ostrovskii, I. N. Shklyarov, et al., "Use of electric heat treatment for improving the strength properties of gimbal gears," in: Construction, Study, Technology, and Economics of Automobile Production [in Russian], Mashinostroenie, Moscow (1978).

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  3. Yu. M. Lakhtin and A. G. Rakhstadt (eds.), Heat Treatment in Engineering (Handbook) [in Russian], Mashinostroenie, Moscow (1980).

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Authors
  1. K. Z. Shepelyakovskii
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  2. R. R. Ismailov
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  3. A. N. Litvin
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  4. N. I. Vishnevetskii
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  5. V. I. Tabaka
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  6. V. A. Rusin
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Additional information

Scientific Production Association "Tekhmash." Sinel'nikov Leaf Spring Factory. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 11–14, February, 1992.

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Shepelyakovskii, K.Z., Ismailov, R.R., Litvin, A.N. et al. New technology for heat treating leaf-spring sheets for trucks. Met Sci Heat Treat 34, 97–101 (1992). https://doi.org/10.1007/BF00769874

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  • DOI: https://doi.org/10.1007/BF00769874

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