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Mig Welding


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#1 malc_west

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Posted 04 April 2020 - 11:27 AM

Hi, I'm trying to weld up some brackets out of 4mm steel and I just can't get the weld to take. I've tryed beveling the edges of my upright piece and drilling holes close togeater in my seat piece to help the heat to build and still too no avail. If I turn the welder to 6 instead of 5 it just blows the fuse. Any tips to help would be greatly appreciated

#2 imack

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Posted 04 April 2020 - 11:46 AM

I recently had a problem with my mig welder where the weld was terrible and and I was barely able to stick anything together. Turned out to be the the wire liner knackered and the wire was just burning away before it made contact with the work piece. I replaced the torch with a euro torch conversion and it now works perfectly again. Worth checking the wire moves freely in the liner, there should be virtually no resistance.
The fact it blows a fuse on no.6 might be that the welder requires more than a 13amp supply.

#3 malc_west

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Posted 04 April 2020 - 11:52 AM

I've never replaced the shield or welding tip on it could that be part of the problem

#4 panky

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Posted 04 April 2020 - 12:05 PM

I recently converted my ancient Migmate 130 to a euro plug and lead as the liner was knackered and the mice had nibbled the outside sheath. Much better control (even though my welding leaves a lot to be desired :shy: )



#5 imack

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Posted 04 April 2020 - 12:59 PM

Possibly the tip if its causing the wire to drag. Have you cranked up the wire speed to match the output settings?

#6 malc_west

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Posted 04 April 2020 - 01:47 PM

Possibly the tip if its causing the wire to drag. Have you cranked up the wire speed to match the output settings?

no I didn't to be honest. Should I up wire speed too then? I suspect being a novice with the welder is the main problem I've got a wolf 140 mig welder and I feel it should be capable of doing the job?

#7 imack

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Posted 04 April 2020 - 02:05 PM

I'm no expert but if you increase the output for heavier steel you also need to increase the wire speed otherwise the wire burns away in mid air rather than acting as a filler.
Thus was the problem I was having with a worn out / damaged liner.

#8 sonscar

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Posted 04 April 2020 - 02:48 PM

Make sure the earth clamp is tightly connected to the earth lead,clean the clamp faces and connect it to a clean part of the workpiece.I would think 4 mm is at the top end of the welders capacity.Steve..

#9 sonikk4

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Posted 04 April 2020 - 04:30 PM

The first thing I would be looking at is the earth, make sure it’s pristine and clean.

If you are turning your welder up and it’s blowing the fuse ( I take it it’s a 13 amp fuse) then either the welder is faulty as that should be fine with a 13 amp rated fuse or it needs a 16 amp blue type plug.

My 135 TE Clarke will weld 1/4” steel plate comfortably so I suspect it’s down to lack of power ie it needs to be on its top power setting with wire speed upped to meet the needs of the power setting.

#10 malc_west

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Posted 04 April 2020 - 06:43 PM

The first thing I would be looking at is the earth, make sure it’s pristine and clean.

If you are turning your welder up and it’s blowing the fuse ( I take it it’s a 13 amp fuse) then either the welder is faulty as that should be fine with a 13 amp rated fuse or it needs a 16 amp blue type plug.

My 135 TE Clarke will weld 1/4” steel plate comfortably so I suspect it’s down to lack of power ie it needs to be on its top power setting with wire speed upped to meet the needs of the power setting.

When I brought it they claimed you could use it either way but I'm beginning to wonder if it does need 16 amp. Is there some sort of converter you can get to plug in do you know? Cheers for all the hp every one

#11 grizzler73

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Posted 04 April 2020 - 07:53 PM

What wire are you using? I have a 135 and have welded 10mm, if you use 0.6mm the wire speed is to fast and it won't weld properly, always use 0.8mm, it cuts down on the surging of the current and is less likely to blow a fuse.

#12 sonikk4

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Posted 04 April 2020 - 08:19 PM

 

The first thing I would be looking at is the earth, make sure it’s pristine and clean.

If you are turning your welder up and it’s blowing the fuse ( I take it it’s a 13 amp fuse) then either the welder is faulty as that should be fine with a 13 amp rated fuse or it needs a 16 amp blue type plug.

My 135 TE Clarke will weld 1/4” steel plate comfortably so I suspect it’s down to lack of power ie it needs to be on its top power setting with wire speed upped to meet the needs of the power setting.

When I brought it they claimed you could use it either way but I'm beginning to wonder if it does need 16 amp. Is there some sort of converter you can get to plug in do you know? Cheers for all the hp every one

 

 

No converter needed but i run a separate 16 Amp circuit in the garage and my workshop with a 16 Amp Type C MCB.



#13 Avtovaz

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Posted 04 April 2020 - 09:32 PM

i dont think itll be the tip, itll cause it to not run that nice but if it is running, it should at least stick a little but of steel together.

 

 

what gas are you using? if your using something like argashield light or maybe c02 [ive not tested mine on thick stuff] then it wont stick properly with thicker stuff...

 

when you create the arc it creates a voltage spike, when its welding it calms down.

 

 

hth

 

 

edit, also, please post some pics!!


Edited by Avtovaz, 04 April 2020 - 09:35 PM.





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