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Metal Science and Heat Treatment

, Volume 15, Issue 11, pp 950–954 | Cite as

Heat treatment of dies of steel Kh12

  • L. I. Pustyl'nik
Tool Steels and Alloys
  • 18 Downloads

Conclusions

  1. 1.

    The use of austempering permits a substantial increase in the strength and toughness of steel Kh12, with retention of high hardness (HRC 60–63).

     
  2. 2.

    The optimal austempering temperature is in the range of 250–350°; increasing the austempering time (up to 40 min) leads to an increase of strength but does not change the toughness or hardness.

     
  3. 3.

    The quenching temperature for obtaining high strength is 1000°, and for obtaining high toughness 1050°.

     
  4. 4.

    It is recommended that extrusion dies be quenched from 1000° in a salt bath at 300–350° for 40 min and tempered at 240° for 1 h. This increases the service life of dies by 300–400% as compared with dies quenched in oil.

     
  5. 5.

    For minimal distortion with retention of high strength, hardness, and toughness it is recommended that dies be quenched from 1025° in a salt bath at 350° and tempered at 250°.

     

Keywords

Heat Treatment Service Life High Hardness Austempering Salt Bath 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

  1. 1.
    Yu. A. Geller, Tool Steels [in Russian], Metallurgiya, Moscow (1968), p. 288.Google Scholar
  2. 2.
    L. A. Poznyak et al., in: New in Technology of Forging and Manufacture of Forging Tools [in Russian], (ÉNIKMASh, Book 7), Mashgiz, Moscow (1963), p. 111.Google Scholar
  3. 3.
    L. A. Poznyak, Cold Work Die Steels [in Russian], Metallurgiya, Moscow (1966).Google Scholar
  4. 4.
    A. P. Gulyaev and E. A. Lebedeva, Investigation of Steel Kh12F1 [in Russian], TsBTI Ministerstva Stankostroeniya (1962).Google Scholar

Copyright information

© Consultants Bureau, a division of Plenum Publishing Corporation 1974

Authors and Affiliations

  • L. I. Pustyl'nik

There are no affiliations available

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