[MW:1982] Re: 1964] FW: 1963] SS 410 overlay with E 309L MO barrier layer

Dear PB HEGDE Sir

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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