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IMPROVEMENT OF WELDABILITY OF HOT-DIP GALVANIZED STEEL BY ANTI-GALVANIZING COATING WITH Si-Fe-Al OXIDE-BASED MICROPOWDER

  • Seong Min So
  • , Ki Yeon Kim
  • , Il Song Park
  • , Seok Jae Lee
  • , Dong Jin Yoo
  • , Yeon Won Kim*
  • , Min Suk Oh*
  • *Corresponding author for this work
  • Jeonbuk National University
  • Mokpo National Maritime University

Research output: Contribution to journalJournal articlepeer-review

Abstract

A Si-Fe-Al ternary oxide-based micropowder coating was used to prevent the formation of a Zn coating on steel during the hot-dip Zn galvanizing process to reduce the welding fume and defects generated during the welding of Zn-galvanized steel. The composition ratio of the oxide powder was optimized and its microstructure and weldability were evaluated. The optimized oxide coating was stable in the hot-dip galvanizing bath at 470°C and effectively inhibited the formation of Zn coating. The Zn residue could be easily removed with simple mechanical impact. The proposed coating reduced Zn fume and prevented the residual Zn from melting in the weld bead during high-temperature welding, thus reducing the number of welding defects. The results indicated that this pretreatment can simplify the manufacturing process and shorten the process time cost-effectively.

Original languageEnglish
Pages (from-to)155-159
Number of pages5
JournalArchives of Metallurgy and Materials
Volume68
Issue number1
DOIs
StatePublished - 2023

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 9 - Industry, Innovation, and Infrastructure
    SDG 9 Industry, Innovation, and Infrastructure

Keywords

  • Anti-galvanizing
  • Hot-dip galvanizing
  • Oxide micropowder
  • Weldability

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science

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