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Maui, The microetchs for lower power magnification (60X) to measure actual weld size and gross defects. Haste X is a nickle based super alloy akin to inconel. Thanks for the the caution for safety.

Thank you, Wil Taylor, I am trying to avoid the dangerous chemicals (no hydrofluoric or ferric chloride) this is why I am looking into the electrolytic etching using oxalic acid as the etching reagent (this is what was used in my college metallurgy lab) . I will have to train production QC to...

We are trying for Aerospace qualification for resisatnce welding and the testing that we have done so far has all been positive. The problem is we need to be able to do the section testing in-house, hourly per customer requirements. It would be insane to attempt to run production without having...

Looking for some feedback. We've successfully been GMAW welding A36 and A500 to SAE 1030 cast steel using ER70-S3 both CV Spray and modified pulse spray. Asides from the basic WPS parameter controlls we try to stay away from specilize control such as pre/post heat to save cost and training...

Here is another link that might help. Sorry so late http://www.engineersedge.com/weld_design_menu.shtml

not welding but it is structural http://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse