Alcoa's 50,000-Ton forging press in Cleveland is "one of the great machines of American industry." Built in 1955, the "Fifty" broke down three years ago, and Alcoa considered scrapping it. But it's back in operation. Tim Heffernan has the story in The Atlantic.
A forging press is -- begging the forgiveness of the engineering gods -- essentially a waffle iron for metal. An ingot, usually heated to increase its malleability, is placed on the lower of a pair of dies. The upper die is then gradually forced down against the ingot, and the metal flows to fill both dies and form the intended shape. In this way, extremely complex structures can be created quickly and with minimal waste.
What sets the Fifty apart is its extraordinary scale. Its 14 major structural components, cast in ductile iron, weigh as much as 250 tons each; those yard-thick steel bolts are also 78 feet long; all told, the machine weighs 16 million pounds, and when activated its eight main hydraulic cylinders deliver up to 50,000 tons of compressive force. If the logistics could somehow be worked out, the Fifty could bench-press the battleship Iowa, with 860 tons to spare.
It is this power, combined with amazing precision—its tolerances are measured in thousandths of an inch—that gives the Fifty its far-reaching utility. It has made essential parts for industrial gas turbines, helicopters, and spacecraft. Every manned U.S. military aircraft now flying uses parts forged by the Fifty. So does every commercial aircraft made by Airbus and Boeing.
Iron Giant: One of America’s great machines comes back to life.
I’ve mentioned it online before, but here we go: Two years ago, my wife and I decided to leave our rented home behind and move into a 40-foot RV. We spend our spring and summer in Alberta, Canada where she has a job for six months of the year working as an addictions counselor. The […]
Androkavo tests some of the cheap eBay solder against the brand-name stuff; it gets there in the end, but it’s surely not the advertized 60/40 alloy and needs to be close to 400° before it behaves itself.
MIT Tech Review's Antonio Regalado rounds up the year's stupidest, worst moments in tech, from the guy who created his own CRISPR-based gene therapy to beef up his muscles and injected it to Donald Trump's Twitter feed to the FCC's Net Neutrality catastrophe. Of course, Juicero rates a mention.
The Nintendo Switch is king when it comes to gaming on the go, but it’s tough to lose yourself in Zelda: Breath of the Wild or Skyrim if your battery dies out. That’s where this Nintendo Switch Battery Charger Case comes into play. Built exclusively for Nintendo Switch, this pack allows for uninterrupted charging while you play, […]
Creative designers play a pivotal role in engaging target audiences and customers, and while companies are eager to bring more of these professionals on board, you’ll have a hard time getting your foot in the door if you’re not using the industry’s best tools. From Adobe to Maya, the eduCBA Design & Multimedia Lifetime Subscription Bundle […]
As more companies aim to reel in costs and boost productivity, project managers are becoming an essential part of many operations, and they’re paid handsomely for their expertise. But, while demand is high, you’ll have a hard time getting your foot in the door if you’re not toting the right certifications. The Official Lean Six Sigma […]