[MW:3566] RE: 3565] Re: 3559] CONSUMABLES

You cannot change charpy values in HAZ by other welding consumable.

Only weld cycle (t8/5), PWHT and chemical composition of basemetal effect HAZ properties.

Check if you can lower heat-input.

What wall thickness, in which HAZ ?

Normally CrMo1 should be able to generate good impact values in weld metal, if

you did not have excessive dilution with 4130,

and if you do not have excessive high heat input

and correct PWHT temp and holding temp.

As I wrote before : the longer PWHT the higher charpy values

Resume

· low heat input (thin layers),

· CrMo1 (B2) consumable,

· PWHT 690 X 8 hrs.

With kind regards,

Erwin GERING

Van: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] Namens vipin george
Verzonden: woensdag 28 oktober 2009 17:13
Aan: materials-welding@googlegroups.com
Onderwerp: [MW:3565] Re: 3559] CONSUMABLES

Dear Rajagopal,

I am also, requiring this procedure,i've got two failed PQR's
1)I tried to weld AISI4130 TO SA 182 F22V, with ER 80S-B2 & E8018-B2H4 It's failed in the WCL & Impact
Preheat: 260 Degree C Interpass:300 Degree C Maximum
PWHT:690 Degree , Heating & Cooling rate :150 Deg C/hr per inch thk
Holding time:90 minutes
Please advise do we have to follow mandatory appendix-31 for impact acceptance

2))I tried to weld AISI4130 TO SA 182 F22V, with ER 80S-D2 & E10018-D2 It's failed in the HAZ & Impact @ -29 degree C
Preheat: 260 Degree C Interpass:300 Degree C Maximum
PWHT:675 Degree , Heating & Cooling rate :150 Deg C/hr per inch thk
Holding time:90 minutes

Please suggest me an other alternative consumable.I've to qualify this procedure urgently.Please anyone out there who can guide me in this

Thanks & Regards,
vipin george
Specialist services, Dubai

On Wed, Oct 28, 2009 at 12:12 PM, GERING, Erwin <Erwin.GERING@airliquide.com> wrote:

First idea is to use CrMo2 consumables (or CrMo1 could be solution too, depending on application / requirements)

Preheat 200 degrC

PWHT at 690 °C , however

· PWHT temperature is depending on strength requirements 4130 and required charpy values in weld metal

· duration is depending on wall thickness and required charpy values in weld metal

Stick electrodes

· OERLIKON CROMOCORD 2 STC

· OERLIKON OE KV3 HR

TIG rod:

· OERLKON CARBOROD CrMo2 or

· OERLIKON CARBOROD KV3 (=B2)

Erwin Gering

AIR LIQUIDE WELDING

Van: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] Namens rajagopal kannan
Verzonden: woensdag 28 oktober 2009 8:23
Aan: materials-welding@googlegroups.com
Onderwerp: [MW:3559] CONSUMABLES

Dear Members,

Could you please suggest me the apt consumable for GTAW and SMAW to weld SA 182 Gr. F22 cl.1 with AISI 4130?

Thanks and Best Regards,

K.Rajagopal

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