VEGA Mounting bosses and adapters - Manual (Page 34)

6 Welding instructions
Information:
The following welding instructions are for information only. In general,
the relevant welding regulations must be noted. The AD leaflets must
also be noted when welding on pressure vessels.
When welding stainless steel, utmost cleanness is necessary. E.g. it is
not allowed to use rusty tools or screwed parts. Also make sure that no
mild steel is processed in the closer environment.
Use enought inert gase for tack-welding. Make sure that you use tack-
welding and not spot-welding. For tack-welding and welding, the
protective gas pure argon must be used.
The suitable welding dummy must be used to avoid the distortion of
the welded socket.
1
3
2
Fig. 56: Welding dummy
1 Welded socket
2 Dummy
3 Pipeline or vessel wall
It is generally recommended to divide the weld joint into several
segments.
Preparations
Welding dummy
Welding procedure
34 Mounting bosses and adapters
6 Welding instructions
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