Saturday, March 6, 2010

[MW:4446] colour of welding after SAW welding in low alloy mild steel

Hi there,
I have a query related to the colour of welding .After doing SAW
welding on pre conrac machine in low alloy mild steel , the colour of
welding sometimes comes out to be blue or yellowish-blue.Is this a
kind of defect or due to some another reason.Please clarify.
Rohit Rawat(QA),
Kirby Building Systems,
Haridwar.

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