Timeline for When and how did the West lose its dependency on the USSR for titanium?
Current License: CC BY-SA 4.0
24 events
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| Mar 15 at 11:18 | history | edited | MCW♦ | CC BY-SA 4.0 |
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| Dec 8, 2020 at 17:22 | history | rollback | DrZ214 |
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| Dec 8, 2020 at 9:19 | history | edited | gktscrk | CC BY-SA 4.0 |
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| Dec 8, 2020 at 3:16 | answer | added | LazyReader | timeline score: -3 | |
| Aug 16, 2017 at 18:29 | history | edited | sds | CC BY-SA 3.0 |
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| Apr 13, 2017 at 12:47 | history | edited | CommunityBot |
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| Apr 7, 2016 at 0:04 | vote | accept | DrZ214 | ||
| Apr 4, 2016 at 17:53 | answer | added | Schwern | timeline score: 20 | |
| Apr 4, 2016 at 15:40 | answer | added | Tyler Durden | timeline score: -1 | |
| Apr 4, 2016 at 1:28 | comment | added | DrZ214 | @MSalters That same quote is on the wiki article. Pretty sure it's talking about the final Ti product (sheet metal). They were experimenting with new alloys, which is why 80% was rejected. Raw Ti ore doesn't have any problems other than its not refined yet. And you're right, you can't just coke it like steel. There was a Hunter Process involving sodium, and then a Kroll Process still used today involving chlorine gas. After that, it comes out in 100% pure little Ti spheres. Then u use that to make a sheet metal alloy. If ur experimenting in welds/alloys, u may have to reject the final product. | |
| Apr 4, 2016 at 0:51 | comment | added | MSalters | Seems like the real issue wasn't the ore (which is common) but the refined metal. Quoting the CIA, Of the early deliveries from Titanium Metals Corporation some 80 percent had to be rejected. Seems that Titanium forms a brittle carbide (TiC) which means you can't just coke it. | |
| Apr 4, 2016 at 0:07 | answer | added | MSalters | timeline score: 1 | |
| Apr 3, 2016 at 2:29 | history | tweeted | twitter.com/StackHistory/status/716452546160828416 | ||
| Apr 2, 2016 at 21:47 | comment | added | Pieter Geerkens | Check this video at 3:50 and again at 5:00: youtube.com/watch?v=AuuP8L-WppI | |
| Apr 2, 2016 at 19:56 | comment | added | DrZ214 | @PieterGeerkens Fascinating. It sounds like you're just the person I need to talk to. But can you explain exactly why computing power is needed for in a mill? My understanding is, you know the mass and shape of the incoming metal. So you know how much heat transfer is needed to make it a certain temperature. If the incoming titanium blocks are the same, what needs to be computed on the fly? | |
| Apr 2, 2016 at 19:53 | comment | added | Pieter Geerkens | In a 5 or 6 stand mill, the red hot bar comes in at just 5 or 6 mph, but flies down the roll-out table at speeds above 40 mph in sheets a few hundred feet long. If something jams because a temperature prediction is off by a couple of degrees, that is a few tons of very hot metal flying around at very high speed. | |
| Apr 2, 2016 at 19:51 | comment | added | Pieter Geerkens | I worked for a year programming a model for a hot rolling mill; titanium is much more finicky through the mill than steel is. My understanding is that the computing power to successfully put titanium through the rolling mills only became available in the mid to late 1990's. Before that titanium had to be cold rolled, which is less suitable to the production of cheap disposable razors. | |
| Apr 2, 2016 at 19:26 | comment | added | DrZ214 | @PieterGeerkens That would shock me. I thought those were just titanium plated anyway, just like titanium plated drill bits. However, I do seem to recall something changing in the 90's. I thought it was some refinement process like TiO2 refinement. | |
| Apr 2, 2016 at 18:50 | history | edited | CGCampbell | CC BY-SA 3.0 |
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| Apr 2, 2016 at 18:45 | history | edited | DrZ214 | CC BY-SA 3.0 |
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| Apr 2, 2016 at 15:01 | comment | added | Pieter Geerkens | Perhaps the popularity of titanium razor blades beginning in the 1990's drove a market realignment in production. | |
| Apr 2, 2016 at 13:42 | answer | added | Fred | timeline score: 5 | |
| Apr 2, 2016 at 11:05 | answer | added | Matt | timeline score: 3 | |
| Apr 2, 2016 at 8:56 | history | asked | DrZ214 | CC BY-SA 3.0 |