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Yeah, I worded my comment poorly - I agree that the actual process of installing a hot rivet is very difficult manual labor. What I was getting at was that the
by owenversteeg 5y ago
Yeah, I worded my comment poorly - I agree that the actual process of installing a hot rivet is very difficult manual labor. What I was getting at was that the concept of a rivet is fairly simple, and would not take anywhere near 10 full working days to train. One of the issues is that a rivet is pretty intuitive: the metal rivet holds together two other pieces of metal. Is it in the hole and does it have a head on both sides? It'll hold. It'd be intuitive to a child. But a weld is not as intuitive: you can make a nice looking weld that doesn't penetrate deep enough and fails easily. This can obviously be catastrophic when welding ships, so I can understand training taking 10 days.
- pasabagi 5y agoI guess is it's probably tricky to maintain rivet temperature - as soon as it contacts the hull, all the heat is going to flow out and the rivet is going to cool very rapidly. That would presumably have a negative effect on clamping pressure, because the rivet wouldn't shrink so much after it's been hammered in place. I think the guy upthread had it right, however: probably the main difference was the manhours involved per rivet, just because you seem to need like four people working on each rivet at once. And, honestly, if a task is just horrible to do, that's got to have an effect on productivity.