So true 😍

It really is

By something not happening something did happen

Ummmm totally not like someone cooked a chicken with slaps

really confirms how much stronger friction welding can be considering how this was kind of worst case for friction welding.

I wonder if flux would help

@@ov3rcl0cked Not for welding, no. At least not to remove the oxide layer. When it comes to welding, if you are using a process that even uses flux (FCAW or SMAW are the two primary processes that use flux) the primary purpose of the flux is to decompose into a gas that can shield the molten weld metal from oxidation. It doesn't actually help to remove any existing oxidation, that's why you need to use a wire brush. That's also why when welding metals like Titanium, it is better to use a gas shielded process like GTAW than it is to use a flux shielded process like SMAW, because not only is there much less of a risk of weld metal contamination, but the shielding gas can linger for much longer on a weldment, providing shielding to the metal as it's cooling down as well as when it's actually molten.

@@richardmillhousenixon I just know borax flux is often used in forge welding, and this seems similar to that.

@@ov3rcl0cked In forge welding borax flux serves the purpose of preventing further oxidation, not breaking down existing oxidation. Source: Me, an AWS certified welder

@@richardmillhousenixon I have seen people use, and have myself used various fluxes that can stick to, collect or lower the melting point of slag/oxides so it is easier to remove and can often get them out of the way for the metal to stick together properly. I don't know the names of, or the chemicals used for, the fluxes. would have to go look to see if I still have any of it.

Yes, indeed. We might learn more about the weld by seeing the seam clean.

Yes and etch it too

I was thinking the same thing lol

Hitting 40s like alright… alright… alright…

I can’t tell if this is a compliment or a insult

@sam galava jeez what did I do

:( kinda mean

I think it might be easier to; instead of trying to instantly stop the part, you let the fixed part start to spin. That would instantly stop the friction. Then you could stop the whole part.

@@SteveEh You'd still have the same problem of a brief period where the surfaces are still out of synch. Commercial friction welding like this stops the spinning part as opposed to letting the stationary part spin, but they use a brake to stop the chuck sooner, and some machines will support the spinning part without the chuck and simply disengage the chuck to stop rotation, all depending on how heavy the parts they're working with are.

@@Skinflaps_Meatslapper it really doesnt matter. As long as they are not in sink they keep heating up. Actually, adding high pressure when its at temperature would be more beneficial

Get a clutch in there on the mill end.

titanium has a 2x weight to strength ratio compared to steel. the other materials are aerospace grade materials commonly used on parts that need to resist deforming due to extreme temperatures.

Titanium is really well suited for friction welding because it is particularly bad at transferring heat. This makes it difficultish to machine, but it makes it very easy to dump heat into a weld via friction, because the heat moves away from the joint very slowly.

Hmmm, material choice is a big engineering topic. You'll even find great differences between the behavior of different alloy based on the same metal. When choosing a material, you got to consider a lot of factor : cost, strength, hardness, elasticity, resistance to chemical attack, how it's property might change with temperature, how easy it is to process (machine, weld and so forth), magnetic properties and those are just the big ones. But here are the classic choices and their justification : - Mild steel - I want it cheap and I don't care if it's heavy - Fancy steel - I want it tough and I don't care if it's heavy - Stainless steel - I don't want to paint it to resist corrosion, I'll pay good money for that - Aluminum - I want it light, cheap and corrosion resistant - Fancy aluminum - I want it light and not too weak, I'm ok with the price - Titanium - TAKE MY MONEY, I want it light, tough, corrosion resistant and a pain in the butt to work with - Cast Iron - I don't care that it's weak, I want it to dampen vibration and not rust. - Brass - Gimme the fancy one that includes grease between sintered grain for abrasion resistance.

@@pittlebelge this is so good. Thanks!

The SR-71 was made mostly of Titanium so it could handle skin temperatures up to about 600F at Mach 3.3. The X-15 rocket plane was made of Inconel to handle skin temperatures of 1100-1200F at Mach 6+.

Try it, it's really fun ;)

I'm in the same boat

Agreed, say a brake on the stationary chuck that would allow you to "release" the chuck when you power down the lathe. Allowing them to spin together, and not sheering the weld. Or, make a snap brake for the moving chuck head, vis a vie: an oversized chainsaw safety brake.

Your need both parts to have the same surface area to you get equal heating on both parts.

@@paulsanti8517 you could do a positive cone and a negative cone on the other part. Same surface area, but auto centering, would actually be a stronger weld if it worked properly....🤔

You can depending on the surface area. His leather had a hard time with the larger diameter. So doing a overhead purge and a cone setup should have made a better result.

@@the_sharp_carpenter Same surface area, yes, but not same thermal properties. To use the probe and drogue analogy, the probe would be much more susceptible to friction heating than the drogue, because there is more material behind the drogue to actually allow thermal transfer to the rest of the part. It's for the same reason that Aerospike engines are currently nigh unattainable, because a spike has significantly worse thermal properties than an inverted spike of equal surface area.

@@paulsanti8517 Anything other than flat surfaces on flat surfaces would not work for the reasons I stated above

I was thinking the same thing. He needs to surround the outside or the weld with a inert welding gas like Argon so it will stop the oxygen from getting to the weld. On any of the metals this would only make the weld stronger. The 2 different sizes could be done easy enough to by heating the larger size with a rose bud first.

Exactly the same thought.

In my extremely uneducated opinion I think you're right :)

Seems that way. Sounds correct

@@Charles37400 but in welding you'll need a flux or shielding gas

I think you actually want this to happen, then just grind or shave off that mushed up exterior after.