Wind speed for welding activity
tugrulhan özdemir
Ishwar dhiman
Sent from my iPad
--
To post to this group, send email to material...@googlegroups.com
To unsubscribe from this group, send email to materials-weld...@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-weld...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
pradip kumar Sil
Bob Shaw
AWS D1.8 reduces the permissible wind speed for gas-shielded processes to 5 km/hr. Higher levels of small porosity is noted at the elevated wind speed permitted by AWS D1.1. Although strength is not degraded, notch toughness is degraded by the presence of the porosity. Because we need notch toughness in seismic welds, as compared to the common statically loaded structures addressed in AWS D1.1 that have no notch toughness requirements, we have this only in AWS D1.8. Such a wind speed drop for notch-tough welds is under consideration for other codes that have notch toughness weld requirements, including AWS D1.1 for fatigue applications.
Bob Shaw
Ishwar dhiman
5.12 Welding Environment
5.12.1 Maximum Wind Velocity. GMAW, GTAW, EGW, or FCAW-G shall not be done in a draft or wind unless the weld is protected by a shelter. Such shelter shall be of material and shape appropriate to reduce wind velocity in the vicinity of the weld to a maximum of five miles per hour (eight kilometers per hour).
Sent from my iPad