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Enhancement of Copper-Chromium Rod Surface Properties by Improving Thermal Deformation Treatment Regime

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Metallurgist Aims and scope

Stable hardness values at rod end and cylindrical surfaces satisfying standard document specifications, are achieved by combined operation of extruding bar workpieces and quenching in water immediately after emergence from a die channel. This excludes an unfavorable effect of rod heating in a furnace before quenching on a reduction in hardness of their cylindrical surface.

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Notes

  1. Here and subsequently, in inverted commas terms are taken from the standard [5].

References

  1. GOST 18175–78, Tinless Bronzes, Pressed. Grades, Izd. Standartov, Moscow (1991).

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  4. V. M. Rozenberg and A. K. Nikolaev, Tsvet. Metally, No. 8, 65–70 (1972).

  5. EN BS 12163: 1998, Copper and Copper Alloys – General Purpose Bar, ICS 77.150.30.

  6. ТU 48-21-163–83, Chromium Bronze Bars, ОKP 18.4470.

  7. ASTM B 249, General Specifications for Wrought Copper Alloys. Bars, Strips, Shapes.

  8. Yu. P. Solntsev (ed.), Metals: Handbook [Russian translation], Izd. TsKB MT Rubin, St. Petersburg (2000).

  9. A. I. Snegirev, L. M. Zheleznyak, S. I. Parshakov, and M. A. Golovin, “Improved production procedure for manufacturing chromium bronze bars,” Metallurg, No. 10, 83–86 (2012).

  10. A. I. Snegirev, L. M. Zheleznyak, and A. V. Miller, Patent 2239670 RF, IPC C22F1/08, “Method for thermal deformation treatment of chromium bronze objects,” subm. 07.16.2002, publ. 11.10.2004, Byull., No. 31.

  11. GOST 9013–59, Metals. Method for Rockwell Hardness Measurement, Izd. Standartov, Moscow.

  12. ТU 48-21-408–86, Chromium Bronze Bars of Round and Hexagonal Cross Section, OKP 18.558000, Group B55.

  13. N. S. Arsent’eva, N. F. Bokov, O. N. Dashkevich, et al., Patent 2327807 RF, IPC C22F1/08, “Method for thermal deformation treatment of chromium bronze bars,” subm. 07.20.2006, publ. 06.27.2008, Byull., No. 18.

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Authors and Affiliations

  1. Ural Federal University (UrFU), Ekaterinburg, Russia

    L. M. Zheleznyak & S. A. Soldatov

Authors
  1. L. M. Zheleznyak
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  2. S. A. Soldatov
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Correspondence to L. M. Zheleznyak.

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Translated from Metallurg, No. 7, pp. 70–72, July, 2015.

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Zheleznyak, L.M., Soldatov, S.A. Enhancement of Copper-Chromium Rod Surface Properties by Improving Thermal Deformation Treatment Regime. Metallurgist 59, 637–639 (2015). https://doi.org/10.1007/s11015-015-0151-0

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  • DOI: https://doi.org/10.1007/s11015-015-0151-0

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