RE: [MW:18015] FCAW Weaving Width

Of course it depends on specification(s) you have to follow during your project. But in general if your welding procedure is qualified by using string beads or with weaving in a specified width you should use this technology also for project welds especially when Charpy impact requirements need to be met. Increasing the width will increase the Heat Input (slow down the travel speed) as well and can reduce your CV impact values drastically.

In that case only heat input determines the acceptable weaving width which in case of AWS D1.1 never may become more than the Heat Input used during welding procedure qualification (see variable 9 - table 4.6 of AWS D1.1).

If nothing is specified in general 10 – 12 times the wire diameter is used as an acceptable range for maximum weaving width. In case of Ø 1.2 mm wire this means that max. allowed weaving width will be 12 – 15 mm.

 

Met vriendelijke groeten / Best Regards,

 

Herman Pieper

QA-QC Inspector / IWI-C Welding Inspector / IWT / Materials Expert

 

Job van der Havestraat 6

8384 DB, Wilhelminaoord

Cell: +31 6 51691215

 

Van: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] Namens Ram Chatt
Verzonden: maandag 24 juni 2013 05:05
Aan: materials-welding@googlegroups.com
CC: c sridhar
Onderwerp: Re: [MW:18007] FCAW Weaving Width

 

Thank you Friend,

 

 

in my problem we are welded so many joints for FCAW welding weaving width for single layer 20-25 mm (using multi 2 layer welding totaly caping width 45-48 mm ).But our client said this is not allowable .they make NCR.

 

 

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