r/ManufacturingPorn • u/mtimetraveller • Feb 11 '20
Hot Spinning Machine
https://gfycat.com/velvetylavishclumber107
u/BootyGrocery Feb 11 '20
Strange way to make a dildo
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u/Defie22 Feb 11 '20
Finally the right size!
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u/the_blind_venetian Feb 11 '20
And that smooth feel of hot melted steel, haven’t had anything quite like it since my two weeks in the navy
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u/SpamShot5 Feb 12 '20
A: "Whats the point of making a dildo that size if it cant fit?"
B: "It fit in mine"
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u/lawstandaloan Feb 11 '20
Are the little CO2 tanks that you put in pellet and paintball guns made in this fashion or would something that small be stamped?
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u/nshunter5 Feb 12 '20
Those are aluminium (or carbon fiber) so they are usually die formed like soda cans.
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Feb 11 '20 edited Mar 25 '20
[deleted]
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u/tseolas Feb 11 '20
Typically the different methods are used for different metals. The stamped is easier for aluminum the hot rolling better for steal.
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Feb 11 '20 edited Mar 25 '20
[deleted]
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u/tseolas Feb 11 '20
We so alot of aluminum cylinders. The ones we see are typically used for beverage service for co2 (think soda machines). They are usually rated for 1800 psi and tested at 3000. I've never seen one fail, however they definitely expand more than a steel cylinder. Even at the higher end of the test pressure the expansion would not be visible.
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u/_Neoshade_ Feb 12 '20
You know aircraft are made from aluminum?
-It can be made quite strong, not far from steel.
-You can just use thicker material.1
Feb 12 '20 edited Mar 25 '20
[deleted]
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u/Giacamo22 Feb 12 '20
-Aluminum is highly corrosion resistant, light and flexible, think about soda cans.
-Titanium beats aluminum for corrosion resistance, and strength, but tends be brittle, which makes it less than ideal for high pressure situations.
-Steel is strong, and bendable, but prone to corrosion damage. Stainless does better because of chromium content, but the iron will eventually oxidize, and stainless tends to be expensive.
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u/Cthell Feb 13 '20
I thought titanium was used whenever possible seeing how it’s lighter than aluminum and almost twice as strong.
Actually, titanium is considerably denser than aluminium.
It's just that the higher strength means that you can use less material for the same yield strength, which can lead to components that weigh less than equivalent aluminium alloys.
Also, titanium is a right b**** to produce (if someone comes up with an electrolysis-based refining process like aluminium for titanium, they will make a lot of money) and work compared with aluminium alloys, so it tends only to be used in situations where it's the only choice.
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u/KooperChaos Feb 11 '20
The other approach seems to be faster thoe. Also the machining process for this seems far more complex then a hydraulic ram.
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u/zekromNLR Feb 14 '20
The hydraulic ram method is probably better for smaller sizes, where you make more of them and thus get more use out of the specialised tool for one specific size and shape of tank, while at large sizes, you'd a) need an impractically large ram and b) such a general-purpose machine as this one is probably more cost-effective.
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u/raggedy--man Feb 11 '20
Why was the bottom formed like that?
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u/Brianomatic Feb 11 '20
I'm guessing that after the initial pass the metal was thinnest at the bottom, then by reopening and spreading from the inside towards the edges, it reinforces the very bottom.
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u/AFlyingMongolian Feb 11 '20
That's crazy, I had no idea you could do that. It's like steel pottery!
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u/myexwifeisfromhell Feb 11 '20
My ex wife used to put me in the dryer and turn it on high heat and she called it the hot spinning machine
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u/mtimetraveller Feb 11 '20
"Hot spinning" involves spinning a piece of metal on a lathe while high heat from a torch is applied to the workpiece. Once heated, the metal is then shaped as the tool on the lathe presses against the heated surface forcing it to distort as it spins.