TractorByNet.com - View Single Post

Inkomodius · 10-23-2008, 03:59 PM

Sorry I shouldnt have used the term full penetration it is an issue of lack of fusion. With MIG when you first pull the trigger your depositing material right away, however the substrate isnt fully heated yet and doesnt allow full fusion. Do a sample weld and cut out your start and it will most likely fail. With Stick you strike your arc, pull away slightly and it preheats without deposition allowing full fusion right off the start.

But as far as brittle, MIG is the most brittle.

And I have heard of people getting their MIG root ticket, however all procedures by the companies up here call for 6010 root 7018 fill and cap. Im not B pressure myself, nor do I want to. Ive been around it long enough to know none of the companies up here call for it or allow for MIG in their procedures, at least not yet.

10-23-2008, 03:59 PM	#9 (permalink)
Inkomodius Member Join Date: Sep 2008 Location: Grovedale, Alberta Posts: 28	Re: Interesting Welding Statement. Sorry I shouldnt have used the term full penetration it is an issue of lack of fusion. With MIG when you first pull the trigger your depositing material right away, however the substrate isnt fully heated yet and doesnt allow full fusion. Do a sample weld and cut out your start and it will most likely fail. With Stick you strike your arc, pull away slightly and it preheats without deposition allowing full fusion right off the start. But as far as brittle, MIG is the most brittle. And I have heard of people getting their MIG root ticket, however all procedures by the companies up here call for 6010 root 7018 fill and cap. Im not B pressure myself, nor do I want to. Ive been around it long enough to know none of the companies up here call for it or allow for MIG in their procedures, at least not yet.