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http://dx.doi.org/10.5781/JWJ.2016.34.1.7

Development of Structural Steel and Trend of Welding Technology  

Kim, Sung Jin (POSCO Steel Solution Marketing Division)
Jeong, Hong Chul (POSCO Steel Solution Marketing Division)
Publication Information
Journal of Welding and Joining / v.34, no.1, 2016 , pp. 7-20 More about this Journal
Abstract
A brief overview is given of the development of various structural steels and their welding application technology. Firstly, the general characteristics and welding performance of structural steels used in architecture and bridge are introduced. For safety against earthquakes or strong wind, and for highly efficient welding in high-rise building constructions, ultra high strength steel with tensile strength over 800 MPa or high HAZ toughness steel plates under high heat input welding have been developed. In particular, efficient welding technology ensuring high resistance to cold and hot cracking of ultra high strength steel is reviewed in the present paper. Secondly, various coated steels used mainly for outer part in construction are briefly discussed. Moreover, a major drawback of coated steel during welding operation, and several solutions to overcome such technical problem are proposed. It is hoped that this review paper can lead to significant academic contributions and provide readers interested in the structural steels with useful welding technology.
Keywords
Structural steel; Architecture; Bridge; Welding technology; FCAW; SAW; High heat input; TMCP; Coated steel;
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