Naked Eye or Stereoscope

4 cases · 11 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Welded Testpiece for Qualification clear all

Naked Eye or Stereoscope — sub-branches

Kalling Etched Macro 1Keller Etched Macro 7NItal Etched Macro 3

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Macrography of a section longitudinal to the pipe and transverse to the weld. The thickness of the pipe is 12,7 mm (1/2") and it was welded in 6 passes, the root pass, one fill pass and four cap passes.
855
VIEW
ML00153 / Jan.2019
X52 in a Tubular Structure
M - CMn SteelP - Seamless PipeAp - StructureCd - Qualified
Cm - NItal Etched MacroDf - Welded Joint
Macrography of the welded joint taken from the vertical up part of the joint, presenting the root in one pass, the fill of the joint in three passes, the cap in three passes and two temper bead passes. The 10" diameter tube, 9.5mm thick, was welded by GTAW in the root (80SD2 filler metal) and by SMAW for fill, cap and temper bead passes (10018-D2 filler metal).
77
VIEW
ML00129 / Apr.2018
Non qualified WPS for High Strength Steel
M - Low Alloy Medium Carbon QTP - Welded Testpiece for QualificationAp - Oil and GasCd - Non qualified
Cm - NItal Etched MacroDf - Welded Joint
Macrography of the flat position welded joint. It was welded in three passes, with the following parameters. Root pass - 157A, 21V, 146mm/s (wire speed), 3.2 mm/s (welding speed), 1090 J/mm. Second pass - 161A, 21V, 146mm/s (wire speed), 4.2 mm/s (welding speed), 833 J/mm. Third pass - 155A, 21V, 146mm/s (wire speed), 5.1 mm/s (welding speed), 664 J/mm.
48
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 - Flat Position
Transversal section of the 625 nickel alloy multipass weld. Pipe of 1 1/4' thickness
71
VIEW
ML00066 / May.2017
GMAW Welded Joint in 9%Ni Alloy Steel
M - Nickel Alloy SteelP - Welded Testpiece for QualificationAp - PipelineCd - Welding
Cm - NItal Etched MacroDf - Welded Joint

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 flat position welded joint, showing the three passes. The large extension of the heat affected zone in the root reveals the too high imposed energy, melting out of the root gap. The shining spots are pores.
42
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 - Flat Position
Macrography of the horizontal position joint. It was welded in three passes, and one additional pass from the root. Root pass - 153A, 20V, 156mm/s (wire speed), 3.5 mm/s (welding speed), 933 J/mm. Second pass - 162A, 20V, 156mm/s (wire speed), 5.8 mm/s (welding speed), 592 J/mm. Third pass - 155A, 19V, 156mm/s (wire speed), 5.9 mm/s (welding speed), 523 J/mm. Additional at the root - 161A, 23V, 187mm/s (wire speed), 8.5mm/s (welding speed), 467J/mm.
47
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 - Horizontal Position
Macrographic detail of the horizontal position welded joint, showing the three passes welded from one side and the fourth pass welded after removing the ceramic backing. Big pores and liquation were identified.
40
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 - Horizontal Position
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
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
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

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