How They Make Stainless Steel Spheres
ฝัง
- เผยแพร่เมื่อ 26 ต.ค. 2022
- There has been a small clip of an explosive going off in large spheres in various video compilations on TH-cam late 2021. I did not know what the clip was or what was happening. So I started doing some research to explain it.
I found a company in China who makes Stainless Steel Spheres for art sculptures. The companies name is Shenzhen Maoping Sculpture Arts, they have been making stainless steel sphere for 23 years and can create any size stainless Steel sphere up to 20 feet in diameter, all crafted by hand.
it can take about 15 days for a 6 foot diameter sphere.
Based off my research, there seems to be 4 common ways to create a hollow metal sphere, Spinning, Mold Pressing, Water Pressure Hydroforming and Explosive Hydroforming.
This video shows explains what the compilation video was and shows the process of how to make a Stainless Steel Sphere using the Water Pressure Hydroforming method from start to finish.
Thanks for watching.
The 4 ways are = Spinning, Mould pressing, Water pressure Hydroforming and Explosive Hydroforming.
► SPINNING is like working on a lathe, they attach a flat round blank onto a machine, while the blank is spinning at high speed, they use various types of tools to start pressing down the blank into a hemisphere and then weld 2 hemispheres together creating a sphere. This method uses the skills of an artisan to create the hemisphere, and a lot of labour. But Larger companies will use a robot or CNC machine to do the hemisphere forming.
► MOLD PRESSING is just what it sounds like, they use a big hydraulic press and press a metal blank into mould and form the hemisphere that way, and then weld 2 hemispheres together.
► WATER PRESSURE HYDROFORMING is when you create a sphere using either flat or slighting curved pieces of metal into a large polygon sphere, and then using a hose and pump to send lots of water into the sphere under high pressure, forcing the sphere into shape. During this processes they can find any holes in the welds they created and seal them up.
► EXPLOSIVE HYDROFORMING is where you have a large polygon looking sphere made out of curved plates, the sphere is then filled with water and a small explosive charge, and when you set off the charge, the explosive force of the water forces the sphere into shape.
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CREDIT LINKS
► Joyce Chung (company) TH-cam Channel - / @dwentong
► Maoping Sphere-Ball Website - sphere-ball.com
► Engineering and Architecture TH-cam Channel - / @engineeringandarchite...
► Explosive Hydroforming Original Video - • Video
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2:38 I imagine the caps at the top of the spheres when explosive hydroforming are probably designed to release at a pressure that's high enough to allow the forming to occur, but not high enough to destroy the sphere. Very interesting...
Would they have to use a pressure valve? I feel like all that water and such a small outlet, the water should mostly block the hole allowing the explosive to still build pressure. Kind of like blowing water through a pool noodle, if there's enough water in the cavity then your cheeks just expand and you cant blow it out.
@@loganhamilton9816 You're not wrong. I suppose you could do either or... Either use a pressure valve, or make the hole small enough.
I was actually describing a bit of both. You wouldn't even need to use a pressure valve per se, but instead make sure that the material, adhesive, and dimensions are enough so that the plug releases only after enough pressure has formed inside to form the sphere.
I suppose that might be considered a pressure valve 😅
I'm ignorant on the subject, though!
@@loganhamilton9816 due supersonic shockwaves fluid dynamics valves and caps are not needed, the steel walls will get struck thousant of times reflecting shockwaves back to the center in the matter of a millisecond thats why it works soo good,
the service holes are just to pour water and the explosive charge.
You must feel a genius, captain obvious.
@@talesdemidioful That's really interesting. Makes sense. When I first saw it, I thought I saw caps flying off, but I was wrong.
@2:04 welding with no protection at all, why am i completely unsuprised
There's a reason they're so cheap!
they are doing spot welding with TIG. They blink right before they spot weld. (not recommended)
Also cleverly not having to waste any filler on it.
Just close your eyes. Tig welding doesn't usually fry you that bad, and this is coming from a red headed/fair skinned welder
So how much of the art is the artists who had the idea for it vs the craftsmen who actually created it? If the idea is amazing, iconic, and unique, then it doesn’t matter, both groups are impressive
half the welders use no welding mask. Don't buy those things from China.
dollars
The balls harden
The idea always comes first
It's called engineering.
True craftsmanship these things are amazing when they’re done and polished up, we should have more of them around the world🙏
why - what is the practical application - this is wasteful
@@jacobhoffman2553 I think round, shiny ✨ objects, make people smile, and feel good for some reason?
@@greggreg2263 Or it maybe does interact with HAARP to make people sick.
Malls. Balls Adelaide xx
@@jacobhoffman2553 Their hollow so it isn't really wasting too much material. Think about the amount of material going into concrete art pieces or other solid figures.
“The balls harden “
bruh
You’ve got a voice that’s easy to listen to, and the music isn’t intrusive. And of course, you know your stuff!
Thanks Muraka appreciate that :)
This is amazing to watch! Hydroforming! What an amazing idea 👌🏼
These guys probably have one of the most satisfying jobs.
O processo de "water pressure hydroforming", caso não saibam, foi inventaro por Jaime dos Mythbusters. Adam fala sobre isso no seu canal no YT. Não foi patenteado na época, sendo mostrado somente do programa em um episódio de Mythbusters, mas mudou a forma que as industrias moldam chapas de aço.
Excellent and informative.
He's wrong though. Those original spheres are not made out of stainless and they are probably not for an art project unless they want rusty balls.
Wow, human ingenuity is amazing.
Your videos are popping up for me everytime now
Now I really want to make an explosive hydroformed sphere!
Like many skills and arts, getting the shape is easy, getting the shine takes effort.
The shaping is what takes all the skill and craft, the polishing just takes time...
It’s really hard to admire welding done without eye protection
I imagine that position has a high turnover rate. Sucks to imagine being worth less than a welding mask.
They have PPE, you can see a mask etc when he's doing a line. A lot of welders will do tacks with no goggles, just closing eyelids for a second. Not ideal practice but they do it by choice I think.
@@peterlarkin762 a good employer wouldn't let you choose to do that
The editing in this video is next level! Seriously, your summarizing skills are on point. Thanks for putting it all together like this. Keep the awesome content coming, please!
Fascinating video ❤
Great vid on a great topic🎉
Great video. I would never guess how it can be.
Of all factories to be fabricating in, this is a pretty cool one.
The balls harden...
many thanks. large stainless steel sphere from maoping
i always wondered how they made stainless steel spheres
*The balls harden!!*
Colin Fruze built a pulse jet using hydroforming. Pretty cool
2:00 wow they are not afraid of the effects of the welding light on their skin or eyes. also I can see sugaring on those welds lol.
Thanks legend!
2:00 Guy is literally burning his retinas.
Who knew there was a demand for large polished spheres
Fast production, fast delivery, high quality
🎉🎉🎉 you are genius!!! ❤❤❤
Chinese quality. No, thanks.
Those are some big balls...
The balls harden
the balls harden
*Balls harden*
very cool how are they made, but why is they made? only decorations? is there any aplication?
1:40 they glaze it to make the metal taste better.
thank you China
That concave disk would probably be a death ray under the correct conditions.
The balls harden.
The bigger low C steel ones tend to be ocean buoy parts.
Interesting
Is there an engineering reason for not starting from regular platonic solids, such as an icosahedron or dodecahedron? Those seem more straightforward to construct since all faces are identical, but I don’t know anything about the physics or material considerations.
Perfect for omnidirectional transciever🎉🎉🎉
i like the balloon dog
Getting them to fly... is the final step?
Explosive hydroforming is how you find small faults in the welding VERY QUICKLY.
I was a career welder for 40 years. Mostly stainless fabrication for pharmaceutical products. I am curious if electro polishing was used to get the final mirror finish.
Did you watch the video until the end?
1:00
This is exactly what my adhd brain needed rn
It reminds me of the mystery of Betz's sphere.
That looks like Mylar!
The spheres being explosively hydroformed in the beginning were probably used to make buoys.
I do wonder how long that polished surface lasts with weathering. Maybe they coat it with something to make it a bit more resistant to weathering.
Depending on how many trees, street traffic, insects, rain, it starts looking imperfect in a week, and pretty old in 2-3 weeks.
Neat
Hello and velcome, to the Slingshot Channel!
It hurt by foot when i kicked one. Thanks for sharing.
Not just art, fuel tanks, and other storage possibilities
The balls harden
2:09 I don't think it is a good idea to sit right next to the sphere while it is pressurized. They really should rethink their safety procedures. 💥😱
It's perfectly safe since water is not compressible and stores no energy in this state. If the sphere were filled with air, the compressibility would allow the storage of tremendous energy, making it a bomb.
also strange to see all the water spraying around next to a plugged in angle grinder. no one ever wears safety goggles it seems... and there is no safety housing for the big hydrolic press...just imagine what would happen to a hand if it is in there.
@@ithecasticyou make a fair point
@@frankpape7274The hydraulic press only moves when the operator is sitting on the funny pedestal. It appears that the pedestal is a safety switch.
Now imagine giant ball bearings
I just hope this dudes would have reasonably safe work enviroment and safety regulations. Some of this looks dangerous like hell.
Next time you walk by an artsculpture with these shiny balls, know that the 'artist' is not the one doing the work.
I wonder how much water pressure they use.
Have a shot of tequila every time he says the word "Sphere"
Water is needed to distribute explosive energy evenly around all walls. If you just plonk down an explosive it'll blow a hole at the bottom or pressurise the air and achieve nothing.
Nice sfia...
You can also spin them on a spinning machine i do
0:00 The hydroforming explosion video at beginning is in Iran, I don't know what is the purpose of those but definitely they are not making them for artistic purposes.
Bouy, perhaps?
I mean, small holes in the welds shouldnt really be appearing, but their weird pulse tig tack welding is most likely to blame.
Can you hydroform 3 mm thick stainless steel
Ha ha..... Caught you in a ball gaze.
Im glad justice was served
Holy crap man! That chinese company made a solar death ray dish and it said its supposed to invite the viewer to stand in front of it. Unless it was pointing away from the sun, that would be a lawsuit waiting to happen. I just ordered a dish just like it for boiling water. It gets over 1800 degrees f at the focal point which is in front of it. Jesus
Now that’s a big pinball
The incompressible nature of water is perfect for safety.
as someone playing gregtech modpacks i can confirm that's a easy factory
Beautiful but what's the carbon footprint of something like that?
Hopefully a lot, we need more atmospheric CO2 to maintain plant life.
Who cares.
Trees need carbon fool
The BALLS harden
setting the graphics from low to ultra
Why do they weld without mask? Poor eyes. Even considering economy and not suffering it is very profitable to wear a dark glass welding mask.
Their poor skin, even if they close their eyes, its still like getting a ton of sunlight blasted on them.
If they refuse to do it without a mask there are ten poor suckers lining up for the low paid job behind them. Welcome to China.
Thelonious Monk's middle name is Sphere. 😎
The first time this was done in Armenia in 1960 to make an oval dish for satelite’s antennas.
in USSR?
@@arsgabber-ls5vu during those times yes
the way he was welding it without a face mask.....
Hydroforming?
Cant say I have seen one.
Bro welding without glasses rip
how long till this death star operational
Thanks! I now know a new reason how stupid this spheres in art installations are.
1:16 Seeing that worker use a lathe while wearing long sleeves is making me uncomfortable to say the least
Cause why does that look like the back of my iPod but with no scratches like how the heck
And we in the west look down on so much…
Esfrera silencio desde ojo entre vertebras esfera platinado liquido agua guavita emerge silencio sondo energia
👽
The first video doesn't seem right without the fart sound effect
Balls
💗💗😍😍💕💕
The prefabricates where not polygons.
You are wrong. Those big spheres that where formed with explosive hydroforming are not made out of stainless and they are not meant to be shiny art pieces. How do I know? They have rust and mill scale on them! They are clearly made out of some type of hot rolled steel that's not stainless. My best bet would be P355NL2 or something similar as I think that these are pressure vessels of some kind.
inb4 someone does not believe me. Look at 2:28 you can see a streak of rust down the side. Then look at 2:40 there's 2 older balls in the bottom right of the shot that was done before and you can clearly seen they have been siting outside rusting for a bit as they are now a reddish brown colour.
Goo Goo Gaa Gaa
Should fly like hot air balloons.
2:03 no welding masks/goggles, no extraction, poor buggers
Do birds land and poop on them though?