×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Max Heat input in SAW welding.

Max Heat input in SAW welding.

Max Heat input in SAW welding.

(OP)
Hello team, is there a limitation in heat input for individual weld passes or is just a recommended practice do not weld above 3 KJ/mm,in SAW process for steel and mild steel?

RE: Max Heat input in SAW welding.

(OP)
thank very much for the link, but, in case welding in tanks or vessels, there is a limitation??

RE: Max Heat input in SAW welding.

If you're manufacturing to an ASME code, and impact testing is required, see Sec IX Table QW-254

RE: Max Heat input in SAW welding.

Hi II-23,
Heat input of 3KJ/mm or more is quite high, although it may not be uncommon in SAW process. As you know this is so due to the diameter of wire and the higher amperages involved.
ASME Sec-IX guides you on how to control heat input. Heat input could be drastically cut down by variations(increase) of travel speed, reducing the thickness of each pass.
3KJ/mm or more of heat input will definitely impair the charpy impact. If design requirements calls for the impact test heat input needs to be controlled below 3KJ/mm.
In this context the recommended welding parameters for a specific wire flux combination needs to be followed as recommended by manufacturer.
Thanks.

Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources