: two quick welding questions


liveaxle
09-20-2002, 10:08 PM
1) Is there a type of MIG wire that is good for overhead welding?

2) What causes weld splatter and how do I reduce it?


:cool:



thanks,

SCOTTS_4X
09-20-2002, 10:17 PM
well, there's more of a technique involved in overhead welding than a specific type of wire. I'm sure one of the guys on here that has been welding for a bazzilion years or the guy that sits and rears books on vereythingwill thell you that there is, but it has been my trade for the past 7-8 years and I haven't found one. try a pause whip method, it's a little tricky at first but pretty easy once you get the hang of it. and as for the second question, weld spatter: try turning your wire speed down a bit. the perfect weld would have very little sparks flying from it (spatter),, and as a plus, you will get a little beter penetration with slower wire speed.

-Scott

beerisgood
09-21-2002, 07:13 AM
I second that, also be sure everything on yourself that you don't want burned is covered, because with overhead welding, if it isn't covered it's going to get burned.

brainless
09-21-2002, 08:00 AM
no special type of wire for overhead . just lots of practice
as for spatter turn up the heat a little and the wire speed down that will help ..


alan

Moab Austin
09-22-2002, 07:31 PM
Originally posted by fj junkie
no special type of wire for overhead . just lots of practice
as for spatter turn up the heat a little and the wire speed down that will help ..


alan


just to keep it simple don't try to reduce splatter and weld better upside down...to many variables...

turn down heat for overhead...the heat rises ande will let it penetrate equal to flat welding with less heat...and it will keep weld from puddling and dripping...and turn wirespeed down about half as much as heat to start....try that..


you can practice with scrap, and I have found that welding vertical first then moving on to upsided down is hte way to go

tRusty
09-22-2002, 08:22 PM
I find what works best is to turn the heat down slightly and the wire speed up slightly. You're working against gravity, you need to drive the wire up there...

Also, this may seem obvious but do not stand directly beneath the weld...position yourself so that if a big old blob does fall it lands on the floor and not down your shirt:eek:

Rene

anthony_harris
09-22-2002, 08:32 PM
Originally posted by liveaxle


2) What causes weld splatter and how do I reduce it?




What sheilding gas are you using, an Argon/CO2 mix will produce less weld spatter than straight CO2.

KS Toy
09-22-2002, 08:38 PM
Turn the heat up & the wire down. No wait...Turn the heat down & the wire up?:confused: :confused: You guys are confusing me.:flipoff2: Soooooooooo which one is it??

SCOTTS_4X
09-22-2002, 08:39 PM
wire up for overhead, wire down for reducing spatter.

-Scott