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Heat treatment of forging dies

  • Technology of Heat Treatment Using Induction Heating
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Metal Science and Heat Treatment Aims and scope

Conclusions

In forging-die production there is a considerable range of forging dies which are promising for a changeover into advanced heat treatment involving bulk temper hardening and surface hardening using induction heating. The heat treatment suggested provides a saving of material resources as a result of improving the life of forging dies by a factor of 1.5–3 depending on the grade of die steel.

As a result of induction hardening of forging dies, after temper hardening close to the boundary of the hardened layer a zone of reduced hardness forms whose unfavorable effect may be reduced by using before induction surface hardening bulk warming in a furnace or deep induction heating with a reduced energy concentration in the heating zone to the tempering temperature in the temper hardening cycle.

In order to improve the uniformity of induction surface hardening for dies with a complex working shape it is desirable to use heating at reduced power with an increase in heating time.

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Literature cited

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Authors
  1. S. A. Dovnar
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  2. S. A. Kadnikov
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Additional information

Physicotechnical Institute, Academy of Sciences of the Belorussian SSR. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 37–41, August, 1987.

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Dovnar, S.A., Kadnikov, S.A. Heat treatment of forging dies. Met Sci Heat Treat 29, 601–606 (1987). https://doi.org/10.1007/BF00763115

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  • DOI: https://doi.org/10.1007/BF00763115

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