DOLLYMIX WELDING

[limesh M]

Dear All,

Is there any technical term called 'Dollymix' in pipeline welding?

I searched lot of literature but all efforts are in vein.I found that
many contractors WPS says 'Dollymix' progression !!!

Root pass uphill and remaining downhill called dollymix or root and
hot pass uphill and remaining downhill called dollymix? Is it a local
terminology or worldwide accepted one?

Regards,


Limesh

[Phil...@esab.net]

Dear limes
It is pipeline terminology that is commonly known here in Europe

Best Regards

PHIL CHEW

Global Segment Manager -Transport ,Shipbuilding,M&R

ESAB Holdings Ltd, 322 High Holborn, London, UK, WC1V 7PB

Tel: +44 (0) 7584 219132

email: PHIL...@esab.net

ESAB Holdings Ltd is a company registered in England and Wales . Co registration no 1687590 Registered Office: 322 High Holborn, London , UK , WC1V 7PB www.esab.comPlease consider the environment before printing this email.

Dear All,

Regards,

Limesh

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[sumit jaura]

Dear Limesh,,


It is called dolly mix because first pass is uphill and remaining pass
are downhill,

moslty qualified as WPS-02. Dollymix is often has more strength than
downhill welding.

[limesh M]

Dear All,

 

Could you please give some literature explaining the term 'DOLLYMIX'.

 

Regards,

 

Limesh

 

 

[nistala sarma]

Dear Sir,

 

Good morning,

 

Yes it is correct in AWS D1.1 it was writen clearly. and mainly this kind of down hill position used in 6GR position for offshore pipe line structure, and even ABS, DNV also mentioned about this, mainly to controll the heat in put parameters on parent metal and as well as weld pool.

 

Thanks

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Thanks & Regards
N.V.K.SARMA
Inspection Engineer
TUV Rheinland Middle East Fze
4A, 307, Dubai Airport Authority,
Po.Box No: 293542
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e-mail:sarma....@uae.tuv.com, nvksh...@yahoo.com, nvks...@eim.ae

 

[Feroz Mohammed]

IT IS COMBINATION OF BOTH UPHILL & DOWN PROGRESSION CALLED DOLLYMIX

Root pass uphill and remaining downhill called dollymix or root and
hot pass uphill and remaining downhill called dollymix

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Feroz Mohammed
BV_Vizag
9177631000 begin_of_the_skype_highlighting              9177631000      end_of_the_skype_highlighting

[limesh M]

Dear N.V.K SARMA,

 

Could you please specify the clauses in AWS D1.1,ABS and DNV discussing 'DOLLYMIX'.

 

Regards,

 

Limesh