haha watched that 2 hours ago and was thinking the same thingPart 1 is also well worth watching:
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Morrisman
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Don't they call it keyhole welding or something similar. I've seen to done when overplating on ships hills for strength.In some cases I can't do the edges hence this method.
Don't know why more people don't use it. Only ever seen it done on thin sheet steel.
I once did a break test - not very scientific just used a dirty great big sledge hammer - I gave up long before the welds did
scottmk1
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Yes it's also done on rudders, especially on the the closing plate, as you cant get in behind it to weld. I've seen it done on strengthening overplating as @Morrisman mentions too. Also heard it called rosette welding.
Practically every lorry chassis had x members done that way for years ,,, Im stretching a Scania at the moment and Im sick of deep plug weds , and they were done with stick , so they are deep and well burned in. I can certainly vouch for their holding capacity .
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Used to do it loads on tank baffles, 6mm plate to 6mm plate.
Fit the baffles, then weld the top of the tank on, plug welding the top down to a return fold on the top of the baffles. Used to to a 22mm hole.
Also holding agri stub axles into SHS axles.
Fit the baffles, then weld the top of the tank on, plug welding the top down to a return fold on the top of the baffles. Used to to a 22mm hole.
Also holding agri stub axles into SHS axles.
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The key is making sure the hole is big enough to allow you to penetrate the bottom layer properly rather than just the sides of the top layer.Well that's a relief judging by the last 2 remarks. I will happily keep on plugging
outofthefire
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what does a heat mark on lead look like, does it colour?
Trevorleach
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75 kilos of wire!
outofthefire
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Whats this?
expensive , by the look of it .
scottmk1
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If it works for you it's not wrong, but always good to know it's used in all sorts of applicationsWell that's a relief judging by the last 2 remarks. I will happily keep on plugging
I do it all the time on heavy repairs or if I can’t get to the back of something, 25mm hole for the plugs and 1mm wire at about 280 amps run a ring round the bottom of the hole then fill the middle and give it 10 mins then fill up.
If ya not careful you can burn clean thru 1/2 inch plate
run a ring round the bottom of the hole then fill the middle and give it 10 mins then fill up.If ya not careful you can burn clean thru 1/2 inch plate
Sergei Slovenija
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In the hopper for pellets, with a pyramidal bottom made of stainless steel, the vibration motor made cracks through and through. Welded a perforated TIG patch. Thus, increased the contact area of the patch, the vibration is distributed more evenly over a larger area.
