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disbonding - crack problem CoCr-A welding on F6a material
- Thread starter 35jacob35
- Start date
SWComposites
Aerospace
stl6?
HFO?
PTa?
f6a?
contamination?
residual stresses?
a picture or two (directly embedded not linked) might help
HFO?
PTa?
f6a?
contamination?
residual stresses?
a picture or two (directly embedded not linked) might help
mfgenggear
Aerospace
After welding prior to any machining must be done penetrant , radiographic , then repeat
After machining then penetrant radiographic, and UT. Depending on the calibration method and the calibration defect UT will or could not detect slight subsurface defects. Most likely but not definitely
The grain structure change to fast and distorted.
Causing cracks. Was there a post weld stress relief. PWHT. Were the parts pre heated, was the recipe for gas purging was correctly processed.
Was there weld and mfg engineer review.
After machining then penetrant radiographic, and UT. Depending on the calibration method and the calibration defect UT will or could not detect slight subsurface defects. Most likely but not definitely
The grain structure change to fast and distorted.
Causing cracks. Was there a post weld stress relief. PWHT. Were the parts pre heated, was the recipe for gas purging was correctly processed.
Was there weld and mfg engineer review.
EdStainless
Materials
Surface texture?
Preheat?
Have you tried various deposition settings?
You are not using HVOF?
How thick of a layer and what contours?
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
Preheat?
Have you tried various deposition settings?
You are not using HVOF?
How thick of a layer and what contours?
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
mfgenggear
Aerospace
The condition of material ? And type ?
Is it annealed or core harden ,what percentage of carbon. Op can't answer the questions
Is it annealed or core harden ,what percentage of carbon. Op can't answer the questions
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