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Improvement of repair weld quality in low-alloy steel turbine casing components

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Power Technology and Engineering Aims and scope

Metal properties and residual stresses are studied experimentally in repair welds of steel 15Kh1M1FL casing components with use of a surfacing layer by UONI 13/55 and UONI 13/45 grade electrodes, and the permissible temperature range is evaluated for use of this kind of weld based on metal stress-rupture strength data.

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References

  1. S. I. German, N. E. Levenberg, A. A. Erukhimovich, and V. I. Gladshtein, “Residual welding stress distribution in large repair welds of heat-resistant steels,” in: Coll: Metal in Contemporary Power Generation Installations [in Russian], Énergiya, Moscow (1977).

  2. Regulatory Document RD 108.021.112–88. Correction of Defects in Steam Turbine Cast Casing Components and Fittings by Repair Welding without Heat Treatment [in Russian].

  3. R. Z. Shron, “Tensile strength of welded joints with a soft interlayer under creep condition,” Svar. Proizv., No. 5 (1970).

  4. N. N. Davidenkov and E. M. Shevandin, “Study of residual stresses created by bending,” Zh. Tekhn. Fiz., 9(12) (1939).

  5. P. M. Gura, “Procedure for determining residual stresses in an area 2 – 10 mmwide,” Zavod. Lab., 36(10) (1971).

  6. Industry Standard OST 108.961.02–79. Carbon and Alloy Steel Castings for Stationary Steam Turbine Components with Guaranteed Strength Properties at High Temperature. Technical Specifications [in Russian].

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The work was carried out with financial support of the RF Ministry of Education and Science by state contract No. 16.552.11.7015 of 29 April 2011 “Development of a collective use center for determining structural material properties for a new generation of heat engineering based on comprehensive experimental research and tests.”

Translated from Élektricheskie Stantsii, No. 12, December 2012, pp. 20 – 26.

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Gladshtein, V.I. Improvement of repair weld quality in low-alloy steel turbine casing components. Power Technol Eng 47, 61–67 (2013). https://doi.org/10.1007/s10749-013-0399-0

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  • DOI: https://doi.org/10.1007/s10749-013-0399-0

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