Where the difference between 'cast' and 'forged' metals is demonstrated.
I've seen this video a few places. It must be trending. Commenters are impressed with the forklift driver. I am too. One commenter remarked the forklift movements are all computerized and that makes sense, they show another guy in a control room, but that begs the question why have a driver at all.
3 comments:
I've seen first hand the process of squeezing the voids in the crystalline structure from steels and aluminum's like this. It's a fantastic process to watch. The constant crushing and squeezing and you end up with a very homogenous fill structure. The end machining is even more fascinating to watch because this is done on at least 5-Axis machines or with more axis. The biggest machine I've seen work this kind of material is a Hitachi 12-Axis machining center. These machines machined to a very high precision submarine props. They were under armed guard if you can believe that, but the final processes were done by hand also under armed guard. It's simply amazing to watch.
Wow. Maybe I can find a video of that.
I like the explanation about why the wheel must be so precise.
It's enough to make a samurai jealous.
Chip Ahoy said...
Wow. Maybe I can find a video of that.
I like the explanation about why the wheel must be so precise.
It's enough to make a samurai jealous.
At the RPM's that these wheels will be turning, they must be perfectly round, balanced, able to withstand the sheer and rotational stresses without flying apart, and be as lightweight as possible. Angular momentum is one hell of a phenomenon and when the metal crystal lattice is compressed and removed of all of its voids you end up with a very dense matrix that removes almost all imperfections within it.
However, the stresses on katana are different than the stresses on this wheel, so forge folding and removing voids and proper tempering were key for sword making.
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