Re: Re: [MW:4486] colour of welding

Hello Rohit

In Titanium welding change of color describes contamination due to gases like H, O, N . Use of Trailing gas after welding upto 300 degree centigrade can prevent this contamination.

Gurcharn Singh

On Mon, 08 Mar 2010 03:02:23 +0530 wrote
>There is a titanium color chart created by EWI that has been incorporated into AWS D1.9 (I think). I would recommend using it as a guide.

Thanks, Nate Ames

Technical Director | NFC

Eng. Team Leader | EWI

Mail: 1250 Arthur E. Adams Dr., Columbus OH 43221

Email: names@ewi.org

Cell: 614.578.7898

On Mar 7, 2010, at 6:59 AM, "kannayeram gnanapandithan" > wrote:

IT IS BEST METHOD TO FIND OUT GOOD WELDING IN TITANIUM

OTHER METALS NOT TO WORRY

On Thu, Mar 4, 2010 at 8:26 PM, raw <rohit30584@gmail.com> wrote:

Hi there,

I have a query related to the colour of welding.Sometimes the colour

of welding comes out bluish and sometimes yellowish blue .Is this a

kind of welding defect or anything else?

Rohit Rawat,

Asst. Engineer(QA),

Kirby Building Systems,Haridwar.

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