This is due to the Travel Speel and fast cooling , the flux is remove immediately as it is formed .
Maintain the PRe heat and interpass Temp and dont remove the flux till it get ditached fromt he surface .
Thanks
Sujeet
On Sat, Mar 6, 2010 at 6:33 AM, raw <rohit30584@gmail.com> wrote:
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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