The only other thing that works is welder's glass, if you have a welder friend. Welder's glass number 14 or greater will also do it. But it's got to be number 14 or greater.
experience in the mall or that or that moment with the cookies that's actually what we're after in life there's a kind of heroism that welds up when those when those moments happen and it's this this kind of tiny weird heroism um that's much StrangerThan the way that we short kind of uh uh uh shorthand it with the flow of of Seasons uh or or years you know in your
LeMessurier remembered his earlier phone call. The welds holding the chevrons together were swapped for bolts. How did his team calculate the number of bolts per joint?
So any career you can enter into-- I entered as a helper to fetch tea and bidis to the seniors, in spite, I learned the techniques of welding , the engine cleaning, the very core engineering. Not only studying about in books.
And so I've become great appreciation in water and working with the temperatures. I welded a lot, and that was actually like a saver of welding to keep my hands warm while I was out in the snow. You've also mentioned at some point risk, taking it and handling it.
Oh! That's my weld . My first thermite weld . Man, that is hot.
- I mean, you can see the different structures of the crystals even. - In the weld , you can see three different zones. The normal rail is on either side with a horizontal grain, due to how it was rolled in the steel mill.
This helps it form a strong bond. - A good weld would be enough with just one atom layer fused. But we are using the process on a construction site.
The amount of force it takes to permanently deform the steel. So if a weld breaks, it's almost always here. - That's a line you could see on that macro etching.
to support that I'll hopefully be able to make a living doing this for some time to come. Maybe you should weld .
Here's the components being heat treated in a facility in Louisiana. So after you do welding on something, picture like if you put dried glue on a balloon and the weld , as it's heating and contracting, induces stresses into the metal.
There are no gaps or openings. There is a little weld spot there. I see you went right to that.
They're gonna do like 150 welds tonight. When you're welding rail for real, you wanna do it at the neutral temperature of the rail. That is, a predefined temperature at which the rail should have no stress in it.
He showed a homework assignment of a water valve to the right person. And then you had welders that were inventing and patenting equipment-- often not getting credit for it, just don't get me started on that-- but inventing and patenting totally new mechanical devices.
to support that I'll hopefully be able to make a living doing this for some time to come. Yoga or welding or both?
to support that I'll hopefully be able to make a living doing this for some time to come. It's always welding with you.
Yes, I was on a robotics team and I did, basically, robot wars. And I was a welder, and I gave the robot commands. I really wasn't into the physics aspect of it, or a driver.
but that was not the case. - They would never have the idea to weld them. If he'd come to a railroad manager and told them, "I'm Dr. Hans Goldschmidt, I have a process by which I can weld your thumbs together."
This is known as the Heat Affected Zone. If you measure the hardness across the weld , this zone is actually the weakest, both in terms of hardness and yield. The amount of force it takes to permanently deform the steel.
I'd say, it looks like it's flexing a bit. - So we're loading up that weld , bending it until it snaps. See that curve go.
to support that I'll hopefully be able to make a living doing this for some time to come. I don't know how to weld .
it was, that's what really got me to call her and get me out of there. how to use a bandsaw and weld .
was amazing was barely uh um uh is is this currently at a gallery and you plan on the floor and then weld onto those and there'll be no problem but they're very expensive and it would have to
The first hint of trouble came in May, 1978. LeMessurier was talking with another client about welding similar chevron braces. The architect and the steel fabricator said, "Tell me, how did those welded braces work out?" Seems like overkill, they thought.
Okay. We're out here in the German countryside, and tonight they're going to be welding this rail. They're gonna do like 150 welds tonight. When you're welding rail for real, you wanna do it at the neutral temperature of the rail.
Initially, when the rails are laid out, they're placed so they're touching each other. And the first step in welding rail is therefore to create a gap into which we'll pour the liquid thermite steel. So, you have to cut about two and a half centimeters off the end of one rail.
- Where are not the market leader or something, but... Finally they will ride above our welds . - We'll just cut it out, and then take it over to the methodology lab.
to support that I'll hopefully be able to make a living doing this for some time to come. Don't get me started on welding .
Very first day I can touch the wall. I can test the arc of the welding . I can adjust the voltage.
It was a little bit of trial and error and a little bit of educated guessing, but done on a very basic level. I did all my own welding , a lot of my own machining. I built it in a town called Idabel, Oklahoma.
So if you want it to be extra strong after you're done with all your welding , you bake it in an oven at a certain temperature and that allows the tension from the welding to relax. That's what's going on here.
Their mother had come down from some small village along the spine of Patagonia, down with the most recent wave. She'd gotten work as a welder on one of the vessels-- apparently, she was phenomenal with metal-- then made her way south until there wasn't anywhere farther to go.
In Dakar, I'm working with the World Bank to kind of put their infrastructure directly in the continent and not just have it in America, But we know things like if arc welding and steel and concrete, as you said, literally radically transformed the skyline
The various things that people have talked about-- smoke glass and so on-- they're not good enough to protect your eyes. The only other thing that works is welder's glass, if you have a welder friend. Welder's glass number 14 or greater will also do it.
It's the coolest stir friction welding machine ever.
Please welcome to the stage author Glen Weldon.
Then you get to a welder's glove.
Because if the head was essentially welded on to an old body, the heat from the welding may have reset the
analyzing Pros Ceramics wielding W welding widget a to widget B and we immediately need to find another
of Events Nobody Envisioned, or Project Serene for short. Each night, welders would enter the building after everyone left, rip off the sheet rock around the chevron beams, and then weld two five-centimeter thick, two-meter long steel plates on each joint.
Ugh. That is really exhausting. The next step is to line up the rail so the weld will make a seamless connection. Both rails have to be angled slightly up toward the gap.
That's fun, actually. I like that step. The next step is to grind down the weld , so it's exactly the same level as the rail. Obviously, you don't want any bumps when the train is going over it, but also you don't want any indents, so this grinding step is really important.
- So, we put on the grinding machine, and grind until maximum one millimeter of materials left. And we try to only grind on top of the weld . - Yeah.
- That is heavy. Oh! That's my weld . My first thermite weld .
- Yes. - So, it breaks under tension down here, rips up this way. And so it doesn't break in the middle of the weld . You're saying this zone beside it, which is a previous rail material that got heated up in the weld .
And around half use Goldschmidt's thermite. Now, each weld creates about two and a half centimeters of rail.
I started learning how to woodwork and how to weld .
My parents had neglected to teach me to weld , so I had to go with wood.
So even if you could fabricate a steel brace that long, there would be no way to get it through Manhattan. So instead it was sent in pieces to be welded together on site. The chevron bracing solved the wind and gravity load issues, but it also created a different problem.
I never could figure out how to play it, but at least I was exposed. Woodworking, welding , we've got kids growing up today totally separated from the world of the practical. No, it's a problem.