Re: [MW:5861] Re: Cracking F-11 material

Hi All,

 

1. Welding process - GTAW
2. Welding was being made in the vertical position (fixed - 2G position)

On Mon, Jul 5, 2010 at 9:48 AM, JASPAL SINGH <jaspaldhesi@gmail.com> wrote:

Hello Dear,

This is common problem while we are going for the welding with
Inconel.
-- Let me know some more details
-- Welding Process
-- Welding Position

Cracking Phenomenon: As you have buttered the surface with
ENiCrMo-3( Inconel-625), which is having high yield point, While
ENiCrFe-3 is having low yield point and commonly cracks from
centerline while solidification takes place. The bead shape should be
convex in nature.Flat and concave bead in inconel is crack.
In future you can butter with ENiCr-3 or ENiCrFe-3 and butt weld with
ENiCrMo-3. Actually Mo adds the more resistance to yielding. Instead
of V you can chage the joint configuration to U type.

Hope the same will help you out to solve the problem.

Best Regards

Jaspal Singh, CWI-AWS, CSWIP-3.1
Assistant Manager – Welding Technology
Process Equipment Division
ISGEC, Yamuna Nagar, Haryana -135001
Phone: 911732307389
Ext: 391 Mb: +91 9996624244

On Jul 4, 7:49 am, limesh M <limes...@gmail.com> wrote:
> Hi,
>
> Sorry I forgot give some additional information.Preheating was done at 200
> deg C on F11. Material thickness at the weld joint was 21 mm.
> I do not know why the cracks were coming up in the weld joint just after
> welding few mm of length.
> Any idea ?
>
> Thanks and Regards,
>
> Limesh
>
>
>

> On Sat, Jul 3, 2010 at 10:20 AM, limesh M <limes...@gmail.com> wrote:
> > Dear All,
>
> > While welding of nozzle to nozzle joint (nozzle material F11 - bevels
> > buttered with Inconel 625) with ERNICr-3, we find cracks.What can be
> > the probable causes and how we can eliminate it?
>
> > Thanks and Regards
>
> > --
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> > w.r.t. applicable code/standard/contract documents.- Hide quoted text -
>
> - Show quoted text -

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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.