In some past aerospace work, I’ve seen requirements where, if you do use cast parts, you have to cast extra parts on each lot to use for destructive testing. Specifically to inspect the cross sections for flows or grains or whatever they want to look at.
Comment on genius
Warl0k3@lemmy.world 4 days agoNo, but metallurgy isn’t a straightforward peocess like they were kinda implying. Gears, especially extremely high performance ones like in aerospace, have partial hardening, surface treatments, even exotic things like mixed alloys to ensure they meet the mechanical demands required of them. You can’t simply cast a gear and expect it to work - in this case if you tried as they were describing you’d likely just have the teeth shear when you tried to take off and you’d be fine, but there’s a real good reason that part costs as much as it does and it’s not just the administrative costs that come with aviation part documentation requirements.
mkwt@lemmy.world 3 days ago
Fedegenerate@lemmynsfw.com 4 days ago
It was me kinda implying it. Just making a shit posting comment in a shit post community.
Warl0k3@lemmy.world 3 days ago
Oh lol, mixed up you and bizarroland.
Fedegenerate@lemmynsfw.com 3 days ago
Is fine. Didn’t think I’d TIL on a shitpost comm, but you sent me down a wikihole. Always fun
Warl0k3@lemmy.world 3 days ago
Oh, I love how rabbit-holey metallurgy can get. One of my favorite topics is the processes used to cool hardened gears that have to be ground. Keeping the temperatures below a certain point so that they don’t lose the temper is surprisingly difficult even with external flood cooling (or working fully submerged), so you wind up with insane looking profile cutters that have cooling lines built into them directly.