Dear Friends,
I have some doubts regarding the following issues, if u know please share with me,
| Why generally tungsten thorium electrode is used in GTAW? |
| Why nitrogen cleaning is used in S.S? |
| Why color changes during welding in S.S? what will happen if the mixing of pickling and passivation gel mixed in a un-propotionated manner means? |
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Regards,
J.C.Andrews
QA/QC Engineer
Doha-Qatar.
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