D1.1 Preheat for Arc Gouging?

Date 03-04-2010 14:29

I thought I saw somewhere in D1.1 that you have to pre-heat the base material for arc gouging, as well as welding. This would be for thick material like 2" thick.
I can't seem to find it anywhere. Can anyone help?

thanks Chris

By waccobird (****)

Date 03-04-2010 17:19

Chris
I never heard that before and don't recall seeing it in D1.1.
But the air Carbon Arc guide from Arcair has a note saying if you need preheat to weld it then use preheat to gouge it.
http://www.thermadyne.com/arcair_pdfs/89_250_008.pdf
Learn something new daily works for me thanks.
Good Luck
Marshall

By jwright650 (*****)

Date 03-04-2010 17:37

Chris...I don't have time to look right now, but check your D1.5, it might be in there vs the D1.1.

That might be where you saw it in Section 12.
I'm just guessing so look and see.
Gotta run, I'll check in later today to see if you found it......

By 803056

Date 03-04-2010 20:20

Check with the AISC Steel Construction Manual. I seem to recollect a requirement for preheating for certain materials over a certain thickness prior to thermal cutting being performs.

Best regards - Al

By jwright650 (*****)

Date 03-04-2010 20:25

Groups 4 and 5 materials all require 150°F preheat before coping and then MT after cutting the copes or rat holes.

By supermoto (***)

Date 03-08-2010 20:43

Yes, but I think that a group 4 requires the web to be over 1.5 inches thick for MT to be required.

By eekpod

Date 03-10-2010 20:11

thanks guys, computer probelms the past few days.