Poak marks in SAW due to following,
a)Excessive height of flux
b) Small Grain size or fines
Both the factors would contribute poaks particularly on capping ,
The gases evolved during flux and metal reactions may not escape, because of
a) & b)
You can avoid the poaks by optimum grain size or avoid using fines or usage
of recycled flux on the capping
Regards
K.Babu
----- Original Message -----
From: "limesh M" <limesh78@gmail.com>
To: "Materials & Welding" <materials-welding@googlegroups.com>
Sent: Thursday, June 10, 2010 5:08 PM
Subject: [MW:5514] Re: POAK MRKS ON SAW WELDING
Dear Mr. Masthan,
Which company product you are using?We faced such kind of problem with
ESAB filler and flux combination and eliminated the problem by
introducing Lincoln products.The problem we faced only on surface
profile of the weld bead(Radiography was OK).There was no
metallurgical problem with ESAB products during SAW process.
On Jun 9, 11:18 pm, "masthan" <sabreenbah...@hotmail.com> wrote:
> Hi
>
> We are continuously facing problem of Poak marks on the SAW Welding
> surface.
> Welding Consumable L-61 (wire) with 865 (flux) combinations. Any body has
> idea to prevent this. Please share.
>
> Best Regards
>
> M.Masthan
>
> K.S.A
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