From ASME Sec-IX, definition of welding positions, the basics welding positions are:-
§ Groove Weld:-
1. Flat (1G),
2. Horizontal(2G)
3. Vertical(3G)
4. Overhead(4G)
§ Fillet Welds:-
1. Flat (1F),
2. Horizontal(2F)
3. Vertical(3F)
4. Overhead(4F)
Same nomenclature and definitions of groove weld position applies for corrosion resistant and hard facing overlays welds also, except that procedures and performance qualification requires to be done on flat plates or pipes as required. Overlay qualification is different from Sec-IX normal groove weld qualification.
Please see QW-462.5(a) , through,---- to (e), for explanations with diagrams.
Hope this would be of help to you.
Thanks.
Pradip Goswami,P.Eng
Senior Engineer/Specialist(Welding-Metallurgy)
Machine Dynamics & Component Integrity Dept.
Engineering & Training Services Division
ONTARIO POWER GENERATION Inc.
PO Box-2000, RR-55(South)
Nanticoke, Ontario,N0A1L0
Tel:-(519) 587-2201, Ext 3107--in Nanticoke
(416) 231-4111, Ext 5925--in Kipling,Toronto
Fax: (519) 587-6814
Date: Tue, 17 Nov 2009 04:46:30 -0800
From: asghariali@rocketmail.com
Subject: [MW:3678] POSITIONS IN overlaying
To: materials-welding@googlegroups.com
Hi All
are overlaying positions same with groove positions?(according ASME IX)
best regards.
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