Methodological approach of evaluation on prefabrication primers for steel structures

Chung, Sung-Wook; Hyun, Jeong-Hun

doi:10.1016/j.ijnaoe.2021.09.001

Cited by 1 publication

(2 citation statements)

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“…Steel materials and structural parts coated with shop primer can be welded [1][2][3]. In some cases, when the surface coating is improper in terms of indecency of chemical composition or excessive coating thickness, welding process can cause porosity [4][5]. Berendsen reported that the conditions requiring the application of shop primer would form the basis for the final paint system by providing adequate protection against corrosion during shipbuilding or offshore manufacturing [6].…”

Section: Introductionmentioning

confidence: 99%

“…Zhabrev et al examined the effect of coatings in 10 different compositions on the welding process and quality, and stated that all coatings used in the study, including shop-primer coating, had a negative effect on bead-on-plate welding stability [7]. Chung et al investigated post-weld corrosion resistance and porosity formations by applying different shop-primer products at different drying times and at different thicknesses [4]. According to the porosity formation formation obtained from the collected data, it was observed that the porosity decreased as the drying time of the coating decreased, and the porosity increased as the coating thickness increased.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Shop-Primer Coating on S235JR Steel on MAG Weldability

Çetinkaya

AKAY²,

ARABACI

et al. 2022

Advances in Materials Science

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In this study, S235JR structural steel samples in uncoated condition and coated (shop-primer) in different thicknesses were welded by MAG (Metal Active Gas) welding method, and the effects of these applications on the mechanical and microstructure properties of the material were investigated. In the experimental studies, the first specimen group were used without any sandblasting and coating application, the second group specimens were sandblasted at Sa 2 ½ degree, and 25 µm, 50 µm, and 75 µm coatings were applied to the specimens in the other group. Surface conditions and coating thicknesses were selected as the variable parameters. With the examination of the radiography films, it was observed that the surface conditions affected the welded joint. As a result of the study, it was observed that altered coating thicknesses caused defects in the welding zone. It was determined that the coating thickness partially affected the mechanical properties, and the highest hardness values occurred in the weld zone in all samples. Relatively low values were obtained in tensile, bending and Charpy impact tests performed on sample groups with 75 µm coating thickness. The results were verified by the surface fracture, SEM, and EDS studies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%