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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Application: Ship Capture method: Keller Etched Macro Detail focus: Vertical Up Position clear all

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Macrography of the vertical up position welded joint. It was welded in three passes, with the following parameters. Root pass - 115A, 21V, 162mm/s (wire speed), 2.6 mm/s (welding speed), 1090 J/mm. Second pass - 143A, 21V, 162mm/s (wire speed), 5.5 mm/s (welding speed), 594 J/mm. Third pass - 144A, 21V, 162mm/s (wire speed), 6.1 mm/s (welding speed), 979 J/mm.
39
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ML00118 / Jan.2018
Non qualified GMAW of Aluminum Plates
M - Aluminum Magnesium ManganeseP - Welded Testpiece for QualificationAp - ShipCd - Non qualified
Cm - Keller Etched MacroDf - Vertical Up Position

More from these cases

ML00118 — Non qualified GMAW of Aluminum PlatesM - Aluminum Magnesium ManganeseP - Welded Testpiece for QualificationAp - ShipCd - Non qualified
Macrographic detail of the vertical up position welded joint, showing the three passes. The second and third passes penetrated to much, almost through wall thickness. The shining spots are pores, some of a large size.
41
VIEW
ML00118 / Jan.2018
Non qualified GMAW of Aluminum Plates
M - Aluminum Magnesium ManganeseP - Welded Testpiece for QualificationAp - ShipCd - Non qualified
Cm - Keller Etched MacroDf - Vertical Up Position