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Assessment of internal defects of hardfacing coatings in regeneration of machine parts

修复零件中堆焊涂层内部缺陷的评估

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Abstract

This paper presents the use of computed tomography for the evaluation of hardfacing. The method used in this research is hardfacing by tungsten inert gas using alloy wires of wear resistant layers. This paper discusses the latest materials used for hardfacing and their application. It characterizes the defects of obtained hardfacing and impact of the type of wire on the concentration of defects. It further, the basic mechanical properties of coatings were determined. The results are subjected to qualitative and quantitative analysis. The smallest average percentage of defects in relation to the overall surface is observed for the hardfacing EL-600 HB, which amounts to 1.5%. The highest average percentage of defects in relation to the overall surface is observed for the hardfacing EL-500 HB, which amounts to 7.2%. The chemical composition of hardfacing has been presented.

摘要

本文采用计算机断层扫描技术对堆焊效果进行评估。采用钨极惰性气体保护进行堆焊,焊料为 耐磨涂层的合金线。讨论了最新的堆焊材料及其应用。对堆焊涂层的缺陷进行表征,并研究焊料线材 对缺陷浓度的影响。此外,测试了涂层的基本力学性能,对测试结果进行定性和定量分析。结果表明, EL-600 HB 堆焊涂层总表面的平均缺陷百分数最小,为1.5%。EL-600 HB 堆焊涂层总表面的平均缺陷 百分数最大,为7.2%。获得了堆焊涂层的化学成分。

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Authors and Affiliations

  1. Faculty of Mechanical Engineering, Lublin University of Technology, Lublin, 20-816, Poland

    Jerzy Jozwik

  2. Electrical Engineering and Computer Science Faculty, Lublin University of Technology, Lublin, 20-816, Poland

    Krzysztof Dziedzic

  3. Institute of Technical Sciences and Aviation, State School of Higher Education, Chelm, 22-100, Poland

    Ireneusz Usydus & Dawid Ostrowski

  4. Faculty of Mechanical Engineering, Opole University of Technology, Opole, 45-758, Poland

    Grzegorz M Krolczyk

Authors
  1. Jerzy Jozwik
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  2. Krzysztof Dziedzic
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  3. Ireneusz Usydus
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  4. Dawid Ostrowski
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  5. Grzegorz M Krolczyk
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Correspondence to Grzegorz M Krolczyk.

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Jozwik, J., Dziedzic, K., Usydus, I. et al. Assessment of internal defects of hardfacing coatings in regeneration of machine parts. J. Cent. South Univ. 25, 1144–1153 (2018). https://doi.org/10.1007/s11771-018-3813-9

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  • DOI: https://doi.org/10.1007/s11771-018-3813-9

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