Plug welding

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BILLY BLACKARROW
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Plug welding

Post by BILLY BLACKARROW »

How do you plug weld I have tried the way I think but they don't stick together a slight twist and they come apart

This is my method drill hole in top piece and fill hole using a MiG with weld
Question Do I drill a hole in bottom piece as well,I have had a play around trying to get it to work I have counter sunk the bottom piece maybe its my settings,I have a cig MiG but cant weld real good (weld === grind === weld=== grind) wont to weld two 3mm plate./// Any tips?
Thanks Guys
BILLY :arrow:
BILLY BLACKARROW
MY Father always said do the hard part first --because when you are OVER IT you only have the easy part left to do THINGS I HAVE TRIED TO LIVE BY
wot179
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Re: Plug welding

Post by wot179 »

Take a pic of your prep work and a finished plug and I can probably tell you where you are going wrong
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fingers
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Re: Plug welding

Post by fingers »

BILLY BLACKARROW wrote:How do you plug weld I have tried the way I think but they don't stick together a slight twist and they come apart

This is my method drill hole in top piece and fill hole using a MiG with weld
Question Do I drill a hole in bottom piece as well,I have had a play around trying to get it to work I have counter sunk the bottom piece maybe its my settings,I have a cig MiG but cant weld real good (weld === grind === weld=== grind) wont to weld two 3mm plate./// Any tips?
Thanks Guys
BILLY :arrow:
...............................................................................................................................................
Hey Billy ..heres a few photos of my subframe strengthening plates being welded and plug welded........we used a 12mm drill thru the top plate only and clamped the work together ......real important with any mig weld the metal must be very clean and rust free .....Hope this helps mate ...Fingers :thumbsup: :thumbsup: :thumbsup:
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BILLY BLACKARROW
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Re: Plug welding

Post by BILLY BLACKARROW »

Fingers/wot179
My prep looks like Fingers and weld looks the same but it has not the penetration to stick it together I used 1/4'' hole like I said the weld looks good but it 's not, as I wont to plug weld some brackets onto csr chassis strength support for handbrake I need to know it is going to hold
BILLY :arrow:
BILLY BLACKARROW
MY Father always said do the hard part first --because when you are OVER IT you only have the easy part left to do THINGS I HAVE TRIED TO LIVE BY
fingers
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Re: Plug welding

Post by fingers »

BILLY BLACKARROW wrote:Fingers/wot179
My prep looks like Fingers and weld looks the same but it has not the penetration to stick it together I used 1/4'' hole like I said the weld looks good but it 's not, as I wont to plug weld some brackets onto csr chassis strength support for handbrake I need to know it is going to hold
BILLY :arrow:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
You need a bigger hole mate .....1/2 inch will allow you to strike the arc in middle of the bottom plate and work out ,making sure you got enough amperage to get good penetration ......Fingers
Don’t you find it Funny that after Monday(M) and Tuesday(T), the rest of the week says WTF?
wot179
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Re: Plug welding

Post by wot179 »

^^^^^^What he said^^^^^^^
--------------------------------------------------------------------------------

Elwood: I bet these cops got SCMODS.
Jake: SCMODS?
Elwood: State County Municipal Offender Data System.


W.S.C.C.A.
St Marys chapter.
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BILLY BLACKARROW
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Re: Plug welding

Post by BILLY BLACKARROW »

What sort of amperage are we talking about ,BALL PARK
BILLY :arrow:
BILLY BLACKARROW
MY Father always said do the hard part first --because when you are OVER IT you only have the easy part left to do THINGS I HAVE TRIED TO LIVE BY
fingers
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Re: Plug welding

Post by fingers »

BILLY BLACKARROW wrote:What sort of amperage are we talking about ,BALL PARK
BILLY :arrow:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
I,ll check the settings on my mig on saturday afternoon mine is a transmig 215 and they will all vary or check your setup sheet on the inside of the wire compartment it should tell you the amperage and the wire feed settings ,or maybe Wot179 might be able to do it a little quicker but I gotta work tomorrow.. ..........Fingers
Don’t you find it Funny that after Monday(M) and Tuesday(T), the rest of the week says WTF?
wot179
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Re: Plug welding

Post by wot179 »

About 120-130 should do the trick.

Practice a few on some scrap first to get it spot on.
--------------------------------------------------------------------------------

Elwood: I bet these cops got SCMODS.
Jake: SCMODS?
Elwood: State County Municipal Offender Data System.


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St Marys chapter.
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Aussy Edo
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Re: Plug welding

Post by Aussy Edo »

hey mate,
yeah 6mm hole needs to be bigger,you could leave a slight gap(.5mm-1mm) if you want but that will only benefit your top plate depending on amperage.
i would say about 110 to 130 amps on 3mm,maybe about 20 volts approx. :thumbsup: :thumbsup:
Edo
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RollinLow
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Re: Plug welding

Post by RollinLow »

Mate the prior advice is right your welds arent getting hot enough for the metals to bond try cranking up your amps and reduce your wire speed a touch, I would also suggest practicing on some scrap first as it normally ends up with a neater job.
ekstevo
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Re: Plug welding

Post by ekstevo »

I tend to plug with the oxy or drill big holes if I can, if you must plug with the mig try to keep the surfaces touching or go up a voltage setting to what I'd use to weld a run. In heaps of dungers I've worked on I've found mig plugs that haven't stuck.
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