Fabbing some Titanium 911R deck lid hinges.

[no substitute]

I don't know that I think Ti is easy to work with, perhaps in the thinner sheets. It can be friction cut on a woodcutting bandsaw (fast speed) with an old dull blade. Don't breath the fumes. Don't let the powder catch on fire, brush it away. Here's a link, 6-4 is what you want.

[thrown_hammer]

6-4 will fracture when bent. This is an alloy but the exact alloy slips my mind at the moment. I made form dies in our R&D shop to bend Ti implants. Although the 6-4 is stronger.

[project935]

Can ya tell I'm bored today. I just can't stand to seen napkin sketches

SolidWorks models ... drawings are a couple clicks away.




If anybody needs any assistance with stuff like this ... let me know.

[no substitute]

Originally posted by thrown_hammer
6-4 will fracture when bent. This is an alloy but the exact alloy slips my mind at the moment. I made form dies in our R&D shop to bend Ti implants. Although the 6-4 is stronger.

How thick was the Ti? I've bent pieces thinner than 1/8" with out problems.

[BigD9146gt]

i was just skimming the pages, it didn't look like anyone said a whole lot about the welding process. I own a TIG welder,(welding for 9yrs, TIGing for about 7yrs) and am making several chromoly roll bars/cages with it. Titanium that thin requires a back flow gas(argon, argon+hydrogen, or helium). It would be easier if you had a chamber of gas or vacuum chamber because of the small size of the work peices. Titanium is like Stainless Steel, its very susceptible to the elements of you atmosphere and heat treatment. If not treated right, will break. Now how easy i do not know. As long as the post-flow is set high (how long the gas keeps comming out of the welding tip after you stop welding) and you KEEP the tip next to the metal, there should be not much of a problem. I know from welding chromoly and using stainless 304 rod, i need to purge (plumb an argon gas flow to the backside of the weld), and then use a heating torch to heat treat the welded area. i would assume that thin wall Stainless or Titanium would need the same purging treatment to the backside due to how hot the backside gets and would be otherwise be exposed to the atomosphere. Project looks awesome, that was one of the things on my list to make for some friends. Don.

[Ernie W]

[atr911]

Wow, those are really sweet looking, I've never seen them before.

Who sells these (obviously not Ti)?

Adam

[k9handler]

Originally posted by Eric Mckenna
you'll need an Argon Gas and a pressurized chamber ( devolid of a reactive gas) in which to weld it. not an easy thing to gather up .. the are not many people who weld Ti inthe US..
Good luck Shawn.
those will be sweet . I have some Ti 3v/2.5al tubes at home.. from when I worked for a Ti bike maker..
if you can use them let me know..

Eric

Damn Eric...that makes you sound edjumicated!

[thrown_hammer]

These hinges will be .066" thick. The 6-4 we were bending was thinner. I think I may have to make the "U" shaped peice two seperate peices. I don't know if I can get that 180 degree bend with such a tight radius. The welding will be done by someone who knows their crap.(obviously not me) Thanks for the 3D models. I have just been hacking away at these during lunch. To make them in a machine would take longer because I would need to "disrupt" production.

[BigD9146gt]

Thrown hammer, you might be able to get the U tab made by taking a peice of metal with the width of the inner distance of the U tab, along with a jig of two parallel vertical peices of metal spaced and welded together... then you can lay the Ti U tab in flat form perpendicular across the vertical jig, and take the peice thats the inner width, and press the center of the Ti peice. The discription sucks... but check out the picture... its how i make throttle brackets for 3.2 coversions in 914's.

[no substitute]

I can see the tight bends of the pivot might be tough. The other mild bends are what I've done and they bend easily. Cool project all the same.

[BigD9146gt]

here it is in the car...

[thrown_hammer]

A 3.2 in a 914....That could get me in trouble. That bending fixture is pretty slick. I am still plugging away. I hope to have a set done by the new year. I will keep you guys posted.

[RickM]

OK...with the neat tech contributions in this thread I am now subscribing to it. (that's better than getting five stars)

[Leland Pate]

Strangely enough, I am running a criminal case on an entire lot of stolen titanium bench stock.


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.........................................hmmmmmmmm mmmmmmmmmmm...

[Eric Mckenna]

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm.. is right.. you better go check that out..

Shawn, RUN now.. you have about a 12 hour headstart at BEST!!!. gather up the kids and wife unit and head for th hill.. bury everything.. burn what can't be burried or taken.. run... run NOW.. The SCWDP is after you!!!!

[thrown_hammer]

The only time I run away from SC's is on the track!

[Eric Mckenna]

HAHAHAH day-um! Lee... I guess Shawn callzum like he seezum!!
hahahah!

[thrown_hammer]

That was a joke BTW...(Please dont hurt me)

[Eric Mckenna]

SHAWN,, NO, NO, NO, .. even if you feel fear .. NEVER show it..

you have many gruppeB guys in between you and Lee.. he'd never make it 15 miles out of his home state.



Eric