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View Full Version : Would you trust your own welds for this?

WelderBoy
10-02-2007, 09:42 PM
Thread title says it all, would you trust your welds to hold this in the air and flip it over? Takes nerves of steel (no pun) to watch a piece being lifted this big when you welded the pad-eyes on for the cranes to hook to.

(Piece is bigger than it appears)

http://img411.imageshack.us/img411/3319/p1010002im7.jpg

http://img411.imageshack.us/img411/7581/p1010003bw7.jpg

http://img411.imageshack.us/img411/4817/p1010004hj6.jpg

http://img411.imageshack.us/img411/8650/p1010005jw8.jpg
zapster
10-02-2007, 09:50 PM
I'd get it done and kiss it bye bye!.:laugh:
I'd have no problems..

...zap!
olddad
10-02-2007, 10:13 PM
"Would you trust your own welds for this?"

Sure would !!
David R
10-02-2007, 10:15 PM
Nice pics. I didn't realize how big it was till I saw the last pic. :)

yeah, I'd trust my welds..... Follow their procedure......:)

David
Rick Moran
10-02-2007, 10:16 PM
Nope. But I'd love to watch it go on.
stevinator
10-02-2007, 10:19 PM
I get around some heavy lifted items although nothing that size and I always wonder about the cables, slings ,hooks and various pins and chains.Not to mention hydraulic hose failures on certain things. I guess I have never worried about the welding on our end of it.Seems like they haven't failed like the other things.Also very nice pictures,thanks for sharing them.:waving:
WelderBoy
10-02-2007, 10:43 PM
The hydraulic hose on the yellow crane blew during that lift. YIKES
GLwelder
10-02-2007, 10:44 PM
No way, some day though.
Joe H
10-02-2007, 10:49 PM
All day long. If I couldn't trust them for that, I sure as hell couldn't trust them on trailers, or anything else that might take a real beating.
Static-XJ
10-02-2007, 11:23 PM
Yup. I think the largest load a single lift lug I welded has seen is roughly 5,000lbs.
tommyj3
10-02-2007, 11:33 PM
Worry about my welds, no way. I would worry more about the rigging and crane operaters.
Doug247
10-02-2007, 11:58 PM
man thats cool, yeah they would hold up that ship. id love to get into a job like that.
Rojodiablo
10-03-2007, 12:10 AM
I did it earlier this year with the exoskeleton/mold for the raceboat. Over $1.3 million invested in the mold, I watched it flip. I wasn't worried about my welds, more about the cable, the guys under it, and I wondered if my caster wheels were going to work out. But the welds??/ They were good to go.
odleo
10-03-2007, 01:18 AM
At this time no, but I sure would love to have the ability in the future
tanglediver
10-03-2007, 01:59 AM
Typically 70,000 psi...why not! http://i176.photobucket.com/albums/w191/tanglediver/pirate1.gif
http://www.youtube.com/watch?v=gWPwlMv8lNI
maxyedor
10-03-2007, 02:09 AM
Without a dime how do we know it's not part of a 1/18th scale model?

But, yea, I'd probably trust my welds to do that suposing the brackets had enough contact area so that I could get plenty of bead on there and I could weld in a good position, ie not upside-down hanging by my ankles using a mirror. Half my parent's house is held up by my beads, and I'd much rather be responsible for wrecking the nose of a Navy boat than their dining-room. Good work
Joe H
10-03-2007, 02:18 AM
Typically 70,000 psi...why not! http://i176.photobucket.com/albums/w191/tanglediver/pirate1.gif
http://www.youtube.com/watch?v=gWPwlMv8lNI


:laugh: :laugh: That's dang funny.
wello
10-03-2007, 04:16 AM
yes i would trust my welding on some thing like that if a welder can't trust his welds there's no hope for anyone
as some have said I would be worried more about the lifting gear
chopper5
10-03-2007, 06:24 AM
thats neet and weld it paint it ship it lol lol lol ship it get it
MUDBUG
10-03-2007, 07:08 AM
Those are cool pics...what ship yard is that? I used to work shipyards...Communications stuff, not welding. Our company had three shipbuilding contracts and only one of the ships was steel. One was fiberglass and one was wooden. Minesweepers...steel not good. lol

Really cool pics though...and awesome welding. It's amazing what can be done melting metal together. :)
TozziWelding
10-03-2007, 07:57 AM
Damn, right I trust my welds. If you weld for a living and don't trust your own work, down the road you should go period.
olddad
10-03-2007, 08:27 AM
Used to do 5 inch cast steel C hooks on a 21 ton lift arm. 2 pass weld, about 8 inches total weld area on each eye. 2 eyes per lift arm, these held the whole thing while I worked on the assembly. Never had any problems and never gave them a second thought. Did several of these a week. Anything worth doing is worth doing RIGHT !!

Nice pics Welderboy, it amazes me how some of the awkward stuff is handled !!
enlpck
10-03-2007, 11:13 AM
Been there, done that. 100000lb locomotive bodies, among other things.
jwilson
10-03-2007, 11:37 AM
I might...but I sure wouldn't stand under it to find out
Washman
10-03-2007, 12:50 PM
No big deal . .. .... send it right over and I'll put our best guy on it.

He's almost done with the landing gear for the space shuttle.

http://www.weldingweb.com/attachment.php?attachmentid=13048&stc=1&d=1191430164

Washman
WelderBoy
10-03-2007, 08:36 PM
Yup. I think the largest load a single lift lug I welded has seen is roughly 5,000lbs.

Ya, but this weighs a hair over 5,000lbs. :laugh:
WelderBoy
10-03-2007, 08:39 PM
Those are cool pics...what ship yard is that?

Dakota Creek Industries
lil john
10-03-2007, 10:12 PM
only if it brakes
olddad
10-04-2007, 12:41 AM
No big deal . .. .... send it right over and I'll put our best guy on it.

He's almost done with the landing gear for the space shuttle.

http://www.weldingweb.com/attachment.php?attachmentid=13048&stc=1&d=1191430164

Washman
Space shuttle huh...only thing I ever got to play with of NASA's is the sky hooks they load the shuttle onto the back of that transport plane with. It was a pretty good sized piece and was layed out in 1 inch squares...100% x-rayed, did 2 of those.
Joker11
10-05-2007, 01:29 PM
Yeah. I would trust my own welds for that.
I trust my welds. It's other people I don't trust.
When I was taking my advanced classes in college we had a guy come in and show the roll cages he had built and the videos of the guys who crashed in those cages. His stuff was good for sure but it got me thinking. When you build roll cages your welds will be involved in a worst case scenario. Maybe some guy doing 200+MPH and hitting the wall. Even though I trust my skills, I don't want to be involved in worst case scenarios EVERY time. Because sooner or later conditions will be JUST right and something is going to give and it's human life at stake.
So I don't build roll cages for people. For myself, sure. A lifting eye where nobody is under it, sure.
Now, I admit my own thoughts are conflicting and I have not reconciled my refusal to build roll cages along with my desire to do structural steel on skyscrapers. Holy cow, lot's of lives at stake in a skyscraper!
Vicoor
10-05-2007, 07:03 PM
No Way!

But I am the perfect example of a novice.
Engloid
10-06-2007, 08:47 PM
THe first pic makes that thing look like a spacecraft off Star Wars.
airsickness
10-17-2007, 09:38 PM
(Piece is bigger than it appears)

Actually it appears pretty f#@%ing BIG.
And yes I would trust my welds on it.
You sure do nice work though:)
Kenny
tanky321
10-17-2007, 09:43 PM
Those big holes on the bottom are for "bow thruster's" right?
WelderBoy
10-17-2007, 09:43 PM
You sure do nice work though:)


I didn't weld those specific ones on. I've welded similar ones on to similar pieces, but not that exact one. I just happened to be on my lunch break as they were lifting it so I got my camera and snapped a picture.

:)

Oh btw, I air-arced those anchor points off and when I got down deep, I found porosity...a bunch of porosity. :eek: :dizzy: Kind of scary...but there was quite a bit of weld on there, it probably wasn't a big deal, but makes you wonder who they trust to weld those on....
zapster
10-17-2007, 10:00 PM
I'd like to see that done in real time...

Facinating indeed..:cool2:

...zap!
WelderBoy
10-17-2007, 10:25 PM
btw, those big holes in the bow of that ship are big enough that you can stand in them and not touch the top with your head. They will be where the bow thrusters go. They are giant turbines that turn the ship. When in rough water the captain will be able to push a button and have the ship use GPS and sit where it's at without anchor. Amazing stuff in this thing.

btw, this boat will be going out to the gulf of mexico to the oil drillings platforms and bringing men and supplies to and from them.
Engloid
10-17-2007, 10:40 PM
btw, those big holes in the bow of that ship are big enough that you can stand in them and not touch the top with your head. They will be where the bow thrusters go. They are giant turbines that turn the ship. When in rough water the captain will be able to push a button and have the ship use GPS and sit where it's at without anchor. Amazing stuff in this thing.

They put the same type of setup in boats much smaller than that. Some are under $100k.

I was surprised when I found that out.
Rojodiablo
10-17-2007, 11:32 PM
They put the same type of setup in boats much smaller than that. Some are under $100k.

I was surprised when I found that out.
Hell, we put bow thrusters in boats as small as 25ft. the smallest bow thrusters are 8" in diameter. We put them into lots of catamaran fishing boat bows. The twin hulls don't let you steer easily in a stiff wind. Many times, the reason for bow thrusters is for ease of pulling away from a dock, or pulling in to a dock against current or wind. The small bow thruster setups start at around $5,000.
65535
10-18-2007, 01:33 AM
Bow thrusters are great if you can add rear thrusters too then you can eliminate the tugboat almost entirely (although I'm not sure some boats could do forwards or backs that precise.
WelderBoy
10-18-2007, 01:45 AM
Bow thrusters are great if you can add rear thrusters too then you can eliminate the tugboat almost entirely (although I'm not sure some boats could do forwards or backs that precise.

I think this boat has rear thrusters too.
jamlit
10-18-2007, 06:36 AM
I must say thoughs are some real cool pic's welderboy.

Yes I would trust my welds as well. I am not a certified welder but have done jobs were my welds have been subjected to large amounts a force. I may not be a pro welder which may cause me to over design and weld a little but I do sleep good at night.

Thanks for sharing