QW-403.10 (Short Circuit Transfer Limitation)

[cnkn]

ASME SEC. IX QW-403.10 limits the material thicknes up to 1.1 times of the thickness welded for short circuit transfer when the material thickness is less than 13mm.

Does this limitation apply to short circuit+spray arc? I mean, what should be taken into account when a test plate is welded with short circuit for root pass and with spray arc for the fill and cap passes.

Thank You

 

[david339933]

Limit your basemetal qualified to equal weld metal qualified.
I would recommend using a 1/2" thick coupon, as this will remove QW-403.10 limitations, plus you could write another WPS combining the Short Circuit process with another qualified PQR in the future, without re-qualification, per QW-200.4(b).

 

[david339933]

My mistake....limit to 1.1T total.


BPV Section IX
Edition/Addenda:
Para./Fig./Table No:
Subject Description: Section IX, QW-403.10, Short-Circuiting Mode
Date Issued: 09/24/1996
Record Number: BC96-001
Interpretation Number : IX-95-33
Question(s) and Reply(ies):
Question: Does QW-403.10 limit the base metal thickness qualified to 1.1T for a combination GMAW-S/SMAW PQR test coupon thickness "T" less than ½ in. when used to support a combination GMAW-S/SMAW WPS?

Reply: Yes.

 

[DVWE]

Does this limitation apply to short circuit+spray arc?

Yes it does, as indicated by the interpretation david provided.