Welding specification in drawings
Welding specification in drawings
(OP)
Hello,
For a tank design (2 tons of water, atmospheric pressure) I have to designate in a welding symbol a technical requirement for the welding seam to be done as waterproof. What is a common phrase, sentence to be used in this case?
Thanks a lot.
For a tank design (2 tons of water, atmospheric pressure) I have to designate in a welding symbol a technical requirement for the welding seam to be done as waterproof. What is a common phrase, sentence to be used in this case?
Thanks a lot.





RE: Welding specification in drawings
RE: Welding specification in drawings
I think the term you are looking for is "seal weld" However, be aware that this does not constitute a structural weld, just a water tight seal.
jjf
RE: Welding specification in drawings
There is no need to state it as waterproof due to once it has been fully welded inside and out, it's highly unlikely to leak especially if there is no pressure inside the tank.
RE: Welding specification in drawings
I assume that it was be GMAW. If so then your weld procedure should provide information about metal transfere mode(Spray, Globlar, or Short Circuit), wire size, wire type, wire feed, voltage and minium amps.
You can check out www.weldreality.com for weld procdure information. We had that guy in as a consultant and he totaly fixed our problems with pentration.
Just a note about this if you do this many welder do not set there GMAW machine right and use globlar form of transfer of material. This causes a lack of pentration and the leaks you might experience.
RE: Welding specification in drawings
Call out a note referencing it's appropriate spec and a separate leak test note if needed.
templetonc, thanks for the link.
Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP3.1 / PDMWorks 05
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