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<p>This study introduces an improved TIG braze welding technique for joining massive rod-type elements in artistic steel structures, addressing limitations of previous methods like cavity defects and lower joint strength. The novel “joint pool” approach forms a single molten pool of base metal before filler addition, ensuring thorough mixing and eliminating imperfections. Mechanical testing on 10 × 10-mm S275 steel rods demonstrates a significant increase in tensile strength, achieving values comparable to the base metal and exceeding theoretical brazed joint strength. Metallographic analysis confirms superior Fe-Cu composite zone formation and the absence of gas cavities or iron oxide inclusions. This technique also yields joints with mainly smooth outer surface, enhancing aesthetic appeal and reducing post-processing. Its successful application in a complex art sculpture validates its practical utility for high-quality artistic steel fabrication.</p>

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Features of TIG braze welding of rod art structures

  • 期刊论文

  • 发表日期：

    2026年3月24日

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  • Serhii Minakov,
  • Yevgenia Chvertko,
  • Nataliya Strelenko,
  • Anton Minakov,
  • Denys Stepanov,
  • Yurii Popil,
  • Dmytro Vdovychenko,
  • Ivan Vdovychenko,
  • Ievgen Byba

摘要

This study introduces an improved TIG braze welding technique for joining massive rod-type elements in artistic steel structures, addressing limitations of previous methods like cavity defects and lower joint strength. The novel “joint pool” approach forms a single molten pool of base metal before filler addition, ensuring thorough mixing and eliminating imperfections. Mechanical testing on 10 × 10-mm S275 steel rods demonstrates a significant increase in tensile strength, achieving values comparable to the base metal and exceeding theoretical brazed joint strength. Metallographic analysis confirms superior Fe-Cu composite zone formation and the absence of gas cavities or iron oxide inclusions. This technique also yields joints with mainly smooth outer surface, enhancing aesthetic appeal and reducing post-processing. Its successful application in a complex art sculpture validates its practical utility for high-quality artistic steel fabrication.