Threading titanium

Hand tapping ti 6al/4v? seemed to work better with a lubricating oil rather than a cutting oil. This was 10w30 engine oil (probably detergent), if memory serves.

Hul

Checkmate wrote: : : I hand thread a lot of titanium, 7/16-20 blind holes, 1" deep with a : little extra hole for relief and chip clearance. I've found OSG taps to : be about the best, but a little pricey. I used to use a sulfur-based : cutting oil, but found I actually had better results tapping the holes : dry. With the oil, the tap would chatter and chips would break off the : cutting edge. When I tried it dry, that didn't happen. Still, I think : that it would be better to use a lubricant. Is there something better : suited for titanium than sulfur-based cutting oil? : :

I recently got a can of original tapmagic and tried taping a hole in drill rod. I started the hole with the new tapmagic formula and the tap turned pretty damn hard. I applied a little original tapmagic with tricoralwhatever(1,1,1) and it significantly reduced the torque required. It truely is magic. I even like the smell.

chuck

On 9 Dec 2003 16:29:48 GMT, Charles A. Sherwood put forth the notion that...

Was that trichlorethelene solvent? I can see I'm going to have to do some more experimenting. All I've learned for sure so far is sulfur- based cutting oil is definitely not the way to go. What's puzzling me, is why I have better results cutting it dry than with a lubricant.

Following Ernie's suggestion, I tried d'limonene on aluminum and found it excellent. Ernie also recommended it for copper and copper alloys. I have no idea how well it would work on Ti but it wouldn't cost much to try.

If you do, please let us know how well it works.

Ted Copyright 2003 all rights reserved ;-)

On Tue, 09 Dec 2003 18:49:18 GMT, Ted Edwards put forth the notion that...

I have some citrus-based cleaners, but I'm not sure if they're the same thing. I'll give it a try though.

Would a Chickmate be a female Checkmate?

Just wondering....

Leo (pearland, tx)

Avoid the use of chlorine containing compounds when machining titanium. Boeing would not accept titanium parts exposed to chlorine containing cutting fluids. They probably have a good reason for this. ERS

On Tue, 9 Dec 2003 16:55:02 -0600 (CST), Leo Reed put forth the notion that...

I don't know, but if you run across one, get her number for me.

On Tue, 9 Dec 2003 16:55:02 -0600 (CST), snipped-for-privacy@webtv.net (Leo Reed) brought forth from the murky depths:

"Chickmate" is a verb, silly Texican.

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I have no idea what the problem would be on airplanes. In the chemical plant I worked in for decades, titanium is known to give good service in wet chlorine. In dry chlorine, it burns violently. This caused a lot of grief and more than one chorine release until very strict rules were formulated for controlling, identifying, and using titanium fittings. As an aside, if iron gets hot in the presence of chlorine, a very exothermic iron-chlorine "fire" can start. Don't weld on chlorine lines.

Pete Keillor

They are based on d-limonene but usually the concentrations aren't very high. One of Ernie's posts recommended one available in the US. I'm using one available in Canada from

.

Ted

Sorry, Guys!

Drinking eggnog and reading posts is not a good idea! (if you decide to respond)

Wasn't smoking anything though!

Leo (pearland... i think) 8-)

In all serious thoughts - been doing it for years.

Try some Crisco. The veggie white semi-solid oil. It works great for me. It might be due to the veggie complexes.

Martin