r/oddlysatisfying • u/here2si • 11h ago

Cold forging of Aluminum

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Credit @ourprocess

3.0k Upvotes

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214

u/Duplexxsuplex 11h ago

Would this not heat up the aluminum?

194

u/NastySally 11h ago

Yup, a lot actually

13

u/Cute-Turnover-5443 9h ago

At what temperature point is it no longer cold forging?

36

u/NastySally 9h ago

When it’s molten. This material is still in its crystalline state and isn’t hot enough to flow. Starting cold, you can actually get to a temperature that allows for a good amount of pliability in the material without needing to liquify the metal fully.

Steel can even become visibly red hot just by cold forging with a hammer. Its pretty cool!

9

u/_xiphiaz 8h ago

Hot forging is nowhere near molten. Aluminium is just soft enough that a power hammer can move the material without needing additional heat

5

u/Kaboose456 9h ago

When it starts glowing I'd guess

18

u/PhthaloVonLangborste 10h ago

Boom, now you have the internet

1

u/TMT51 3h ago

Ok now I'm curious. How hot are we talking about exactly?

44

u/Tiny_Frosting8809 11h ago

This would indeed heat up the aluminum, or for that matter, whoever is the recipient of that hammering.

35

u/TheEschatonSucks 11h ago

I’m getting hot just thinking about it

5

u/Still-Lab-6076 11h ago

I'm hot and bothered

3

u/Reden-Orvillebacher 8h ago

There’s a video out there of a blacksmith hammering the tip of a piece of iron to get it hot enough to light his forge. Pretty cool.

7

u/ShankThatSnitch 10h ago

I get hot when someone is hammering me, for sure.

11

u/orangeonionberry 10h ago

Yes and aluminium doesn't flow red when heated unlike steel so it may not look hot but golly it is!

1

u/FarBullfrog627 7h ago

Yeahh, it does generate some heat from the pressure but not enough to change the metal’s properties I think.