I must say I have done this exactly the same way on a very small scale in factory work, but never gave thought to the fact that one would also do repairs on large structures such as bridges that are in use. I would have assumed that one would remove the damaged parts and weld in new material for safety reasons. Absolutely interesting and utmost respect to these guys as this is even with many years of experience surely not always an easy task.
Sir, great respect to you, worked with a guy who could do this stuff, fantastic work you do. An engineer and artist that has a true understanding of steel
I love it when you see yet another example that the stereotypes are wrong. Those being, that white collar office workers are the "smart" people, and low IQ people are the blue collar workers. A few of the smartest people I ever met, worked on farms.
I have few questions about heat straightening: 1. How thick were the members of this bridge? 2. Which tip size did you use on that thickness? 3. Do you heat "V" simultaneously with two torches - one on both sides, or do you use only one torch on one V. Thanks for answers. P.S Greate Video. Waiting form more :)
Marek f u can use any size of tips it depends how strong your fire and how thick is your metal to be heated there alot of heating technic...the V,the strip, and the circle.....i work as a thermal upsetter in shipyard...
Experience & empirical data... so much in engineering is based on this... its not all computers & robots... the sad thing is that skills like this are being lost on the daily... 😣
I would think that beam is structurally bad from bending stretching and heating, i would opt to cut it out and replace it, i cant imagine an engineer signing off on this?
Why would you think the girder is suddenly "structurally bad'' ?... do you know how they are made ? Heat and rolling... also the carbon content in the steel is quite low keeping the metal ductile... you wouldn't do this with high-carbon steel & cast iron wont move at all, it will just crack... Girders are not heat-treated (tempered) so re-heating like this is not detrimental to the metal composition/strength... as long as you don't overheat, hence the digital tep. scanners etc... look at how a blacksmith makes metal bend with heat, its not sub-par as a result of this... 😎👍☘🍺
@@peterfitzpatrick7032 actually many big beams are welded from plate not rolled especially the ones in this video. so the heating doesn't hurt anything . the metal expands when hot but constrained by the surrounding metal . them when it cools it shrinks and pulls back thereby pulling the surrounding metal.
It's a soft low carbon steel like the E24 or Corten for shipbuilding, easy to weld, pretty resistant to corrosion and very ductile. It"s a welded beam. It doesn't give a shit about some heating and air cooling. And the structural calculations have been made with a very comfortable margin.
I must say I have done this exactly the same way on a very small scale in factory work, but never gave thought to the fact that one would also do repairs on large structures such as bridges that are in use. I would have assumed that one would remove the damaged parts and weld in new material for safety reasons. Absolutely interesting and utmost respect to these guys as this is even with many years of experience surely not always an easy task.
Sir, great respect to you, worked with a guy who could do this stuff, fantastic work you do. An engineer and artist that has a true understanding of steel
Write a book or even better make a movie about heat straightening . I would pay for it
I had no idea you could move metal that much using this tenique. Amazing.
Thanks for posting this, I have an i beam to straighten and my 20 ton press wasn't budging it. Time to fire up the torch.
This video helped me tremendously with my welding business!
Thank you gentlemen!
900 is perfect temperature so not to lose tensile strength. 14x300 columns were my favorite to straighten. Old school iron workers👍
Just found your channel. Very nice work! It would be great if you made more videos.
Heat Straightening is a art ...There is only a few people really know how it is a dying trade...
I am a straightener at a navy shipyard shipyard and have heard these exact words from alot of the older and wiser workers there.
Δεξιοτέχνης . Δυσκολη δουλειά απαιτείται μελέτη και αντίληψη.
Interesting and informative video.. thanks !
I love it when you see yet another example that the stereotypes are wrong. Those being, that white collar office workers are the "smart" people, and low IQ people are the blue collar workers. A few of the smartest people I ever met, worked on farms.
the guy asking question is sharp as a razor
Yes, they were both very good.
Whatever these guys get paid, it’s not enough!
I have few questions about heat straightening:
1. How thick were the members of this bridge?
2. Which tip size did you use on that thickness?
3. Do you heat "V" simultaneously with two torches - one on both sides, or do you use only one torch on one V.
Thanks for answers.
P.S Greate Video. Waiting form more :)
Marek f u can use any size of tips it depends how strong your fire and how thick is your metal to be heated there alot of heating technic...the V,the strip, and the circle.....i work as a thermal upsetter in shipyard...
Great vid with excellent information
Very simple explanation
Live this video, learning to do this is great fun and interesting
Amazing channel
How to caculater heat straight on beam
You just know.....
It's a feeling you get when working with steel..
Experience & empirical data... so much in engineering is based on this... its not all computers & robots... the sad thing is that skills like this are being lost on the daily... 😣
Pretty cool stuff
interesting video.
Amazing!
Fantastic
amazing
looks like my job 20 bosses per 1 worker
I saw the owner of the company, the engineer, and the workers.
I would think that beam is structurally bad from bending stretching and heating, i would opt to cut it out and replace it, i cant imagine an engineer signing off on this?
Why would you think the girder is suddenly "structurally bad'' ?... do you know how they are made ? Heat and rolling... also the carbon content in the steel is quite low keeping the metal ductile... you wouldn't do this with high-carbon steel & cast iron wont move at all, it will just crack...
Girders are not heat-treated (tempered) so re-heating like this is not detrimental to the metal composition/strength... as long as you don't overheat, hence the digital tep. scanners etc... look at how a blacksmith makes metal bend with heat, its not sub-par as a result of this...
😎👍☘🍺
@@peterfitzpatrick7032 actually many big beams are welded from plate not rolled especially the ones in this video. so the heating doesn't hurt anything . the metal expands when hot but constrained by the surrounding metal . them when it cools it shrinks and pulls back thereby pulling the surrounding metal.
@@ronblack7870 how do you think that plate steel is made?
hokus pokus, it turns the steel to jello, it's only an aesthetic "fix", you can't tell cause all the other structural members are doing the work
How do you imagine welding works without turning steel into "jello"?
@@danno1111 do some reading on changes in material properties as a result of heat straightening
That’s gotta be great for metal fatigue and absolutely reduces the strength of the steel.
WTF.
It's a soft low carbon steel like the E24 or Corten for shipbuilding, easy to weld, pretty resistant to corrosion and very ductile. It"s a welded beam. It doesn't give a shit about some heating and air cooling. And the structural calculations have been made with a very comfortable margin.
How did he ever get to be a boss ?.. He can barely speak bloody English 😂
Don't do that... ?
You only show yourself up as being ignorant... are you ??
Amazing work.