Sampling and Analysis

2 cases · 2 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Granular Capture method: Kalling Etched Macro clear all

Sampling and Analysis — sub-branches

Welded Joint 2

Results

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Macrography of the flat position welded joint. It was welded in three passes, with the following parameters. Root pass - 159A, 21V, 147mm/s (wire speed), 3.5 mm/s (welding speed), 979 J/mm. Second pass - 170A, 22V, 168mm/s (wire speed), 7.7 mm/s (welding speed), 538 J/mm. Third pass - 172A, 23V, 168mm/s (wire speed), 7.0 mm/s (welding speed), 587 J/mm.
43
VIEW
ML00118 / Jan.2018
Non qualified GMAW of Aluminum Plates
M - Aluminum Magnesium ManganeseP - Welded Testpiece for QualificationAp - ShipCd - Non qualified
Cm - Kalling Etched MacroDf - Overhead Position
Macrography of the pipe to fitting welded joint, in a region where the thickness loss is almost uniform. The pipe is in the left of the figure and the elbow is in the right, with a general thinning (average of 2 mm, considering that the original thickness was 3.7 mm), and a slightly more intense thickness loss at the weld metal near the elbow side.
183
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Kalling Etched MacroDf - Welded Joint