We tried the bend test the way you explain but right after the start
it fails, unable to clear under any conditions.
As far as chemistry is concerned, if i go as required E309MOL barrier
layer , which is rich in Nickel , how i can achieve the nickel less
than 0.6% in clad layer.
one option is to remove the barrier layer with grinding , but that is
costly affair and lot of rework.
Regards
Jaspal Singh
9996624244
On Apr 17, 9:01 am, "PB HEGDE" <hegde...@isgec.com> wrote:
> For Overlay
>
> Use of FCAW is advisable , However you can use Thin wire SAW with C% less
> than 0.04 which is available, The 0.6 % is max Ni, More over You have to use
> Lower carbon. PWHT temp. should not be more than 640C (Of course 410 overlay
> should be on 309Mol barrier layer )
>
> If you want to have bend test please try with initially small er angle of
> about 120 degree with 60 formaer dia and later on with 40 former dia Loading
> should be very slow
>
> Regards
>
> Hegde P.B.
>
> From: materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com] On Behalf Of Bathula Raghuram
> (Mumbai - PIPING)
> Sent: Thursday, April 16, 2009 8:57 AM
> To: materials-welding@googlegroups.com
> Subject: [MW:1964] FW: 1963] SS 410 overlay with E 309L MO barrier layer
>
> _____
>
> From: Chandra, Vasanthan (Lagos) [mailto:Vasanthan.Chan...@DeltaAfrik.com]
> Sent: Wednesday, April 15, 2009 8:30 PM
> To: materials-welding@googlegroups.com
> Subject: RE: 1963] SS 410 overlay with E 309L MO barrier layer
>
> 1. How many layers deposited with thickness of each layer including barrier
> layer?
>
> 2. Check for Welding consumable chemistry used for welding (Batch No wise).
>
> 3. Max Ni content for SS410 for FCAW Consumable is 0.6%. Hence, depends upon
> your consumable batch no, the chemistry will be achieved. We can't get 0.6%
> Ni because of variation in batch no.
>
> 4. ''C'' content. Again it is depends upon the batch used. Check for the
> same.
>
> 5. Bend failure: This is might be due to the formation of sigma phases by
> heat treatment. Hence, choose consumable with extra low carbon and do
> screening test.
>
> Regards,
>
> vasanth
>
> -----Original Message-----
> From: materials-welding@googlegroups.com
>
> [mailto:materials-welding@googlegroups.com] On Behalf Of JASPAL SINGH
> Sent: 15 April 2009 07:41
> To: Materials & Welding
> Subject: [MW:1963] SS 410 overlay with E 309L MO barrier layer
>
> Dear all
>
> I have problem in the overlay of SS 410 on SA 516 Gr 70 with FCAW
>
> process
>
> - I am unable to achieve the carbon % 0.06
>
> - failure in bend test
>
> - unable to achieve Ni content of 0.6%
>
> As required the barrier layer of E309Lmo which contains high value of
>
> Ni and Cr .
>
> Please let me know is it possible to achieve 0.6% Ni in clad layer
>
> with height of 6mm only.
>
> how to clear the bend test ? or waiver from client is the only option.
>
> Looking for you valuable suggestions.
>
> JASPAL SINGH
>
> 919996624244
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