BOHLER EV 50 7018s

[fillncap]

hi guys heres some pics i promised months and months ago
5G 12" pipe to elbow ,tig root 4mm gap feather edge 135amp,hot pas 2.5 ev50 90-100 amp fill/cap 125-130 amp.
12" pn16 flange rolled (welded at 3 oclock position)first pass ,3.2 ev 50 dragged at around 120 amp,second pass 3.2 ev 50 blocked out at around 130 amp.
the shocking stop/start on the top of the pipe is an example of how not to weld when you cant see the prep because your to lazy to put a new lens in your lid

jay

 

[decepticon]

looks awesome to me, how long have you been doing pipe welding for?
did you use the 7018's with a dc supply? have you tried the ev50's for ac and which is better.
what steel grade are these pipes? in structural we use s275 or s355.
cheers

 

[fillncap]

i only got in to pipe game about 8 years ago,i used dc positive for those welds,if im rooting with them id be welding on negative,cant say iv used the ac type,

jay

 

[foue01978]

How to move video possible l'arc I plead l''''''''''''''''''''x

 

[fillncap]

How to move video possible l'arc I plead l''''''''''''''''''''x

dont understand the reply??????

 

[Weldingartisan]

Obviously not on price then, 12" PN16 weaving at 3 O'clock with a roly poly? Get the 4mm 7024 (iron powder) out at 11 - 12 O'clock. I'll give you a race! W/A

 

[fillncap]

with the crap pay im on, definatly not on price.(winkwink)hence not sugesting the speed of ironpowder to the gaffer....also the procedure for the job was 7018...
w/a the reason i welded those flanges at 3 oclock is because the rollers were all out on site and that pipe was sat on tressles,my own aproach to rolly pollying those (on rollers) at 12 oclock would be first pass with 4mm 7018 sub pass/passes 5mm 7018.as for raceing,,, have ago rooting 6" sch40 rollypolly 12oclock ,tig root at 225-250 amp,if my memery searves me correct i think the last time i was on production work it took me a little over a minute to do.
also if you can post some iron powder pictures flanges,butts ect .bre good to see.

kind regards jay

 

[Weldingartisan]

as for raceing,,, have ago rooting 6" sch40 rollypolly 12oclock ,tig root at 225-250 amp,if my memery searves me correct i think the last time i was on production work it took me a little over a minute to do.


kind regards jay

That's quick, I wish I could watch my pipework TIG is cr*p. W/A

 

[Weldingartisan]

with the crap pay im on, definatly not on price.(winkwink)hence not sugesting the speed of ironpowder to the gaffer....also the procedure for the job was 7018...
w/a the reason i welded those flanges at 3 oclock is because the rollers were all out on site and that pipe was sat on tressles,my own aproach to rolly pollying those (on rollers) at 12 oclock would be first pass with 4mm 7018 sub pass/passes 5mm 7018.as for raceing,,, have ago rooting 6" sch40 rollypolly 12oclock ,tig root at 225-250 amp,if my memery searves me correct i think the last time i was on production work it took me a little over a minute to do.
also if you can post some iron powder pictures flanges,butts ect .bre good to see.

kind regards jay

Well I'm a bit of a Ludite with this equipment but let's try a pic. This was obviously a split sleeve and not designed to hold water! Welded downhand 4mm iron powder 180 amp DC-.

 

[decepticon]

been trying to get to grips with these 7018's and finally starting to get used to them- no where near as good as those above though
2.5mm ev50's at 100amps dc. electrode positive
3 pass fillet weld: the first run was an ar*e to chip the slag off but it fell off the second and third run

vertically up laid fillet, 80 amps (min recommended on packet) slag fell off a treat.
slight undercut on some points:

didn't bake these before use, cut small hole in foil packet, pulled some rods out then sealed up with tape. not ideal procedure but better than nothing.
rod stubs were glowing red hot when finished.
lots of splatter-how can i avoid this?
still prefer the bohler fox ohv 6013's (yield strength of 7018 is 490 N/mm2 and 6013 ohv is 460N/mm2 so they aren't that much stronger)
comments welcome
neil

 

[Douglas]

Keep a tight arc, with practice you'll love these rods.

 

[Weldingartisan]

Esab Fermax recommend DC+, while Electro Arco Rental (all 7024) state + or- . You will get far less spatter on DC-. If I run 'white box' (yes, I know I'm cheap but I have to buy my own) 6013's on DC+ they make a terrible mess, on DC- they're fine. The inside of the flange above was done with a 3.2mm 6013 with virtually no spatter. W/A