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Production features of the preparation of bellows with micron-thick walls made of brass LANKMts

  • Nonferrous Metals and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    In preparing particularly thin-walled tube blanks for bellows with low stiffness made of brass LANKMts, it is recommended that they are given as intermediate softening heat treatment, i.e., water quenching from 730°C, which makes it possible to reduce grain size and to stabilize material microstructure. In this way tube material ductility is sufficient for carrying out deformation treatment during preparation of tube blanks.

  2. 2.

    The required degree of deformation in preparing tube blanks, providing high productivity and the optimum combination of mechanical properties and material microstructure is 40–50%.

  3. 3.

    The recommended softening heat-treatment schedule before bellows forming, providing high production properties during the preparation of bellows from tube blanks and the required operating properties for finished bellows, is water quenching from 760°C.

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Literature cited

  1. A. I. Chipizhenko and Z. M. Iedlinskaya, "New relaxation-resistant alloys for the springs of high-reliability manometers," in: Physical Metallurgy and Heat Treatment of Nonferrous Metals and Alloys [in Russian], Trudy Inst. Giprotsvetmetobrabotka, Moscow: Metallurgiya, No. 26, 215–231 (1967).

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  2. Zh. P. Pastukhova and A. G. Rakhstadt, Spring Alloys of Nonferrous Metals [in Russian], Metallurgiya, Moscow (1983).

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  3. I. G. Dobrovol'skii and V. S. Shlyakovoi, "Method for testing bellows tube blanks," in: Metallurgy [in Russian], Vysshaya Shkola, Minsk (1983).

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Authors
  1. I. G. Dobrovol'skii
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  2. V. V. Mikhailik
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  3. T. M. Khonyak
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  4. V. S. Shlyakhovoi
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Additional information

Belorussian Polytechnic Institute, Scientific-Research Institute of Thermal Power Instrument Building (NIIteplopribor). Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 43–45, May, 1986.

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Dobrovol'skii, I.G., Mikhailik, V.V., Khonyak, T.M. et al. Production features of the preparation of bellows with micron-thick walls made of brass LANKMts. Met Sci Heat Treat 28, 362–365 (1986). https://doi.org/10.1007/BF00814694

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  • DOI: https://doi.org/10.1007/BF00814694

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