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Making Spherical Tanks Through Explosive Hydroforming

eric3579 says...

From YouTube videos description..

Explosive hydroforming, also known as HERF (High Energy Rate Forming) or exploform, is a striking alternative to the more traditional process of metal hydroforming. Unlike this older method, which shapes metal using pressurized hydraulic fluid pumped into a forming chamber, HERF techniques utilize an explosive charge to create the necessary pressure. Although the charge is relatively small, it is capable of generating enough force to mold the associated metal into the die.

The explosive charge is typically positioned at a specific distance from the workpiece, and both are immersed in fluid, usually hydraulic fluid or simple water. Certain facilities may also use oil, gelatin, liquid salts, or regular air as the transmission medium. However, water is the most commonly used medium as it is the least expensive, excellent for creating uniform peak pressure, and readily available. Once the charge and workpiece are properly positioned, the charge is detonated, pressing the workpiece into a die. The part is then removed and the process is repeated if necessary.

Explosive Hydroforming Methods
Explosive hydroforming techniques fall into two basic categories. Although both methods function according to the same general principles, they rely on very different placement of the explosive charge within the forming chamber.

Standoff Method: With the Standoff Method, the explosive charge is used in conjunction with an intervening medium. In most hydroforming applications, the intervening material is typically water, oil, or air. The required deformation level dictates how far the explosive charge is placed from the piece of metal to be formed. When the charge detonates, the ensuing force is transmitted through the fluid and pressures the metal into the die. Detonations used in the Standoff Method can often reach several thousand pounds per square inch (psi).

Contact Method: In the Contact Method, an explosive charge is placed in direct contact with the forming metal. This process generates far more pressure than the more conventional Standoff Method. By placing the explosive charge in close proximity to the surface material, the detonation can result in as much as several million psi.

Biden, Illegals, detained, fail.

newtboy says...

I went there a few years back, (the original Hotel California, not the Satanic church in SF that the song is really about) in Todos Santos, they had a sculpture in front that was two bent pieces of metal that, when viewed from the right spot across the street, made a giant red cock and balls!

Beyond that, it's just a tourist trap with few tourists.

BSR said:

And I was thinking to myself,
"This could be Heaven or this could be Hell"
Then she lit up a candle and she showed me the way
There were voices down the corridor,
I thought I heard them say...
Welcome to the Hotel California

Nika uses Esper Hand. By Esper Bionics

C-note (Member Profile)

Something went terribly wrong with this ship's controls

EMPIRE says...

When that metal portion of the ladder going from the pier into the water, starts scratching the side of the ship, it was hard to watch. Such a beautiful vessel in such a beautiful color.

These birds are soo METAL!

newtboy says...

Since we live in the matrix, obviously the birds, arms, and guitars were all added digitally.
There is no bird.
There is no guitar.
There is only METAL!

lucky760 said:

I think the guitars were added into the video digitally. The birds weren't actually holding them and playing them with their arms.

Mordhaus (Member Profile)

These birds are soo METAL!

Ginrummy33 says...

It's hard to teach birds to play guitar with their elusive hidden arms, but it can be done. These are faked, but you can still believe that somewhere are some REAL metal birds who can do it old style!

Everyone wants to be the captain till captain stuff to do

Squirrel jumps on UPS delivery man

StukaFox says...

I gotta squirrel story.
So when I lived in Mountain View, for Christ only knows what reason, the idiots in charge of power put this big-ass transformer thing on the corner of my property. The thing hummed with menace and I knew that shit wasn't right. But I didn't worry none because there was a big green metal cover over it that provided the same protection against horrendous death that a box of Kleenex would have provided the World Trade Center on 9/11.
One day, I'm standing on my balcony and drinking a beer. I mighta been stoned, too, only there's no 'mighta' that day. I'm watching the whorehouse across the street (really) and generally buzzing when I see a squirrel on the lawn. I hate squirrels. A motherfucking squirrel ate my bar fridge and fucked me outta the $50 I was selling it for on Craigslist (really).
Anyway, I got this longneck of Bud in hand and I'm working out whether I can brain the goddamn rodent with it when the neighbor's cat come rippin' ass from under the balcony and goes after Skippy.
Well here's some amusement!
The squirrel is running for it's pointless life and the cat is banking like a F-16 chasing an Iraqi MIG and I've already got $10 down on the kitty with a $3 over/under. I already know how this was gonna end and I was rootin' for it every step of the way.
Only it didn't.
The goddamn squirrel found the ONE way to get under that green metal cover I mentioned previously. The cat stops in amazement and I'm all pissed because I've been gypped outta Wild Kingdom's money shot.
A second later there's a flash like Ivy Mike going off from under the cover and an a concussive BOOM!! The fucking cover blasts off like a Space-X project gone horribly wrong -- or, in this case, delightfully right.
The cat jumps like 5 feet in the air and an arc of turds flies outta its butt, the cover returns to earth as a traffic hazard in the middle of Latham St., and the squirrel is basically vaporized. And now I'm the happiest motherfucker in Mountain View because dude, that shit was AWESOME!
I call out, "Babe! You won't believe what just happened!" 'cause you gotta totally share shit like that.
Then I realized everything is TOTALLY silent, like Little House on the Fucking Prairie silent.
"The power's out," my wife responds.
And it STAYED out for like two goddamn days while the putzes from the power company had to rewire pretty much everything that blew up.
Honey Badger didn't give a shit because Honey Badger'd copped an oz right before this shit happened. And as Fat Freddy taught us, "Dope will get you through times of no power better than power will get you through times of no dope." Or some shit like that. I dunno, I'm totally fucking baked right now.

newtboy (Member Profile)

Congress Under Armed Attack Live Stream

newtboy says...

Not correct.
They used metal barricades to hit police in the face many times. One of the two arrested so far was arrested for repeatedly punching a cop in the face, I think hospitalizing him.
They also sprayed police with pepper spray/mace repeatedly.
I just saw video of a lone officer being chased up a stairway by a group of men and he gets his baton out, not his taser or gun.

Edit: one cop has now died from injuries received from rioters. Over 60 were injured.

Not to mention all the felony destruction of federal property the police made no moves to stop, or that carrying a firearm in the building is a felony that many were committing, or the pipe bombs and molotovs they left behind. Edit: now there’s word that top secret documents and a laptop with more state secrets were stolen.

The only rational explanation for totally insufficient preparations and/or the inhuman restraint is the capitol police were complicit.

Edit: It has now been verified that the Capitol police refused an offer of thousands of extra officers and refused national guard help with the coming Jan 6 riots days earlier, knowing full well that thousands of violent nut jobs were coming to get “wild” as Trump put it, many armed to the teeth and ready to force a “trial by combat”. Even after the armed rioting by the same group the night before, the capitol police still refused any help. They were definitely complicit here. The entire force should be investigated with any that helped prosecuted for dereliction of duty AND sedition....not just the chief, and not just fired. Prosecuted harshly and dumped in gen pop.

vil said:

The mob looked really crazy, attacked the police, but more verbally than physically, and if physically more just pushing them around than throwing things or hitting cops with them. Not even a good hockey fight. But still they stormed the building. Something aint right.

Time of Our Lives: Songs from the last 50 years (1970-2020)

Biggest World War Two bomb found in Poland explodes

SFOGuy says...

Ah; cutting charge forced a sheet of molten metal through the middle of the thing? Or---charge forcing a slug of water into the middle of bomb to disrupt it?

oritteropo said:

The bomb was actually too large for a controlled explosion, with 2,400 kg of explosive, so instead the navy divers used a technique that was supposed to cut open the casing and burn the explosives inside. This was the successful result

Uncle Roger DISGUSTED by this Egg Fried Rice Vid - BBC Food

newtboy says...

Draining and rinsing the rice AFTER cooking?!? WTF?!
If you don't know how to cook white rice, don't go on tv to teach people how to make fried rice.
You have baby, put msg on baby....maybe not make smarter baby, but more tender.
First my wife leave me, now you scrape pan with metal....hiyaaa. Uncle Roger wanna suicide.
*promote



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