The Street > The Bike Shop
3D printed titanium parts
alaskun:
--- Quote from: alaskun on September 30, 2014, 04:44:55 AM ---...
--- Quote ---http://www.rntbike.com/
http://reviews.mtbr.com/interbike-road-not-taken-flex-fit-108-flat-pedal-with-float/rnt-foil-tape
http://www.pinkbike.com/news/interbike-2014-tech-fest-special-nerd-worshippers-edition.html
Road Not Taken is a South Korea based start-up company that manufactures simple products that are beautifully crafted and engineered. Their titanium hardtail fame is pieced together using printed lugs, brazed to ultra-strong 6-4 alloy tubes, using a material that has only been available to the public for three years. Amorphous titanium - http://spinoff.nasa.gov/Spinoff2004/ch_7.html - has no grain structure, as most people understand it, and thus becomes almost as viscous as water when it liquefies. RNT wraps a thin ribbon of amorphous titanium around the tubes at each junction and then heats the frame in a vacuum oven until the ribbon melts and bonds the tubes to the lugs. The result is a one-piece titanium structure. I read about amorphous metal a few years ago when The Wall Street Journal announced that Apple had purchased the rights to use the patented process from Liquid Metal - but until Interbike, I had never touched the stuff.
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just a bit more on the amorphous stuff...
Researchers develop new metal materials through 3D printing
--- Quote ---Oct 19, 2015
...The appeal of making amorphous metals comes precisely from the randomized cellular composition. That is, the material, being made up of tiny fragments, like grains of sand, have a stronger, harder, and more fracture resilience than regular metals because of the lack of pattern in their composition, so to speak. While metals in their regular crystalline structure tend to break along lines of their cellular structure, the amorphous metals would have no pattern to break along. As Dr. Liou explains, “The smaller the grains, the stronger [the SAM] is.”
The hope is that it will be possible to create new materials with 10 times the strength of conventional metals, which would ultimately lower the amount of material actually needed to produce an object, the weight of the material, as well as production costs. Liou is confident this is where their research is heading. He adds, “If you can have the next breakthrough in materials, you can have a lot of changes.”
For their research, Liou and Sarangapani have been given a $146,758 grant from the National Science Foundation...
http://news.mst.edu/2015/09/researchers-use-3-d-printer-to-make-new-materials/
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http://3dp.se/fran-tunna-skivor-till-tjocka-block/
https://translate.google.com/translate?sl=auto&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2F3dp.se%2Ffran-tunna-skivor-till-tjocka-block%2F&edit-text=&act=url
--- Quote ---...Amorphous metal is stainless and gives good mechanical properties such as high strength. Traditionally designed structural steel is an average of 300 megapascals, but can be up to 2,000 megapascals. Titanium, which is often used with the EBM technology, located at 900-1000 megapascals. They now known amorphous metals have a strength of up to 5,000 megapascals. The iron-based amorphous metals Exmet work with is 4000 megapascals...
...In the current situation works two groups are working to develop the manufacturing method. The first group is arranged in the Vinnova project "Improved spring performance - mechanical springs of amorphous steel" and is carried out at Mid Sweden University in Östersund. This one uses a Arcam machine running electron beam, known as EBM technology. One of the characteristics that amorphous steel gives high elasticity, which is examined in the Vinnova project with positive results.
- In preliminary designs on a spring, we have gone from a standard spring of two kilograms to 0.2 kilograms in the optimized spring of amorphous steel, with the same effect, says Mattias Unosson...
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alaskun:
steel
http://ideas2cycles.com/
http://ideas2cycles.com/prototypes/the-fixer/
--- Quote ---3D printed titanium dropouts from Reynolds tubing.
http://blog.wheelism.co.uk/?attachment_id=1105
http://forums.mtbr.com/frame-building/3d-printing-bicycle-industry-912782-post11914475.html#post11914475
04-20-2015
"Was chatting to Reynolds at the Bespoke show this weekend and they are about to produce a 3D printed titanium and stainless drop out set. By 3D printing they can make it hollow with internal support struts. Looked lovely and really organic. They said they were hoping to hit a price point around £130 which isn't bad compared to machined parts. "
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--- Quote ---http://forums.mtbr.com/frame-building/3d-printing-bicycle-industry-912782-2.html
03-25-2015
"Stainless steel. Still under development and torture test. I would need to figure it out the oval shape... it's possible to do. The structure design is everything for rings and I'm trying many many options always looking for the lightest and strongest. It's been fun."
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Aesop Rock:
https://www.youtube.com/watch?v=s9IdZ2pI5dA
In case you guys were wondering, this shit is the mother fuckin future.
alaskun:
--- Quote from: Aesop Rock on October 20, 2015, 10:39:16 AM ---this shit is the mother fuckin future
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The Future – 3D Printed Metal YoYo
I'm not trying to be a dick, but the guy from :30-:45 looks exactly like someone who would use "aesop rock" as a username
Aesop Rock:
Hahaha, no offense taken. I feel ya. Although these days I feel like more often then not I'm wearing a dirty white t-shirt and coolant covered jeans/boots.
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