Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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The Latest Technology Development Trends of Flux Cored Wire

Flux Cored Wire의 최신 기술 개발 동향

  • 임희대 (세아에삽 용접기술연구소) ;
  • 최창현 (세아에삽 용접기술연구소) ;
  • 정재헌 (세아에삽 용접기술연구소) ;
  • 길웅 (세아에삽 용접기술연구소)
  • Received : 2016.11.04
  • Accepted : 2016.12.02
  • Published : 2016.12.30
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Abstract

Flux Cored Wire is the most widely used welding material for Flux Cored Arc Welding these days. This paper introduces the technical aspects of manufacturing FCW and the development trend of FCW for each type of steel and metal. The studies are ongoing to lower the production cost of seamless-type FCW since it has not been generally used in welding shops so far because of it high cost even though the seamless-type FCW has various advantages than folded-type FCW in terms of manufacturing technology. Meanwhile, a technical research has been carried out to develop a rutile type of FCW products which satisfies high toughness after post heat treatment. In addition, for high-speed fillet welding, there has been a development of welding materials which can be welded in Single Auto-Carriage 100 cpm or more and up to Twin Tandem 200 cpm without occurring any welding defect in order to improve the welding productivity. As Zn coated steel is being used recently to improve the corrosion resistance of the automotive parts, a research and development for Metal Cored Wire has been conducted to reduce the Si island produced in welding operation than those produced when using the former solid wires. A development of welding material that guarantees CTOD performance beyond $-40^{\circ}C$ CTOD to $-60^{\circ}C$ is underway by different steel grades, and FCW for super austenitic stainless steel is being developed as the corrosion resistant steel has been upgraded.

Keywords

References

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