IDRA 8000 Ton Aluminum Press material concerns with Cybertruck Stainless Steel Material

anionic1

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I don’t see how you could imagine that a car manufacturer (especially an electric car manufacturer) could possibly not consider galvanic corrosion. My biggest concern with some of the direction I see Tesla going is their née love for adhesives in lieu of mechanical fasteners. I get that adhesive technology has come a long way but in my opinion adhesives are less reliable than mechanical or welded connections. The new structural battery pack glued together is a concern and I am fairly certain that Tesla’s solution to adhering the stainless shell to steel body is likely through structural adhesives, which would probably mitigate the galvanic corrosion. That’s just my guess.
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Ogre

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I don’t see how you could imagine that a car manufacturer (especially an electric car manufacturer) could possibly not consider galvanic corrosion. My biggest concern with some of the direction I see Tesla going is their née love for adhesives in lieu of mechanical fasteners. I get that adhesive technology has come a long way but in my opinion adhesives are less reliable than mechanical or welded connections. The new structural battery pack glued together is a concern and I am fairly certain that Tesla’s solution to adhering the stainless shell to steel body is likely through structural adhesives, which would probably mitigate the galvanic corrosion. That’s just my guess.
The cells inside the structural battery pack are basically getting encased in carbonite and should be fine. It's not so much adhesive as being turned into a plastic/ cell composite.

I am a bit concerned about using adhesives to attach the body to the front and and the structural pack. Not much we can do about that.

iu-2.jpeg
 

Crissa

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Also, Tesla already mixes metals. They use the right metal for the right time. And they weld aluminum all the time.

The aluminum in this case will be the creamy rock center of the stainless shelled construct. It being softer, lighter, is actually a benefit in this situation. It will have all the annoying flanges to mount the electronic drive train to, dealing with compressive forces while the steel deals with the flexion forces. The two together will be stronger than using one or the other.

-Crissa
 

android04

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Tesla already has experience with mixed aluminum and steel, and has for all their existence. The Model S and X bodies are mostly aluminum with some steel structural members. The Model 3 and Y bodies are mixed steel and aluminum. I'm sure they know what they are doing after 8 years of making cars for the mass market.

I do remember reading a few cases in some early Model S where a component in the side mirrors was not isolated or coated correctly. This resulted in corrosion in the aluminum part that would cause staining on the side mirror components. Haven't read about any of those since before the Model 3 came out, so they probably addressed the issue.

I trust Tesla (and SpaceX, since some of their work is used too) engineers to have considered and planned for the mixing of the different materials. It does not mean that they won't make any mistakes in planning or manufacturing, but I'm sure any issues would show up before the warranty expires and they will address them.
 
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Luke42

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I guy named @Luke42 gives the thumbs up when he sees his sister-maybe-girlfriend's lover entombed in a block of carbonite.

Nothing fishy there.
..And here I thought I'd heard all of the awkward Star Wars references by Middle School!

The Skywalker clan has an ongoing problem with patricide and child abandonment. It's not surprising that they have other serious pathologies, as well...
 

Ogre

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..And here I thought I'd heard all of the awkward Star Wars references by Middle School!

The Skywalker clan has an ongoing problem with patricide and child abandonment. It's not surprising that they have other serious pathologies, as well...
You fell right into my carefully laid trap.
 

Luke42

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You fell right into my carefully laid trap.
If you claim to be my father then I'm clearly allowed to take you down via a lightsaber duel you, as shown in the Empire Strikes Back (Lucas et al, 1980) and The Force Awakens(Abrams et al, 2015).

Loss of my hand, and replacement with a black robotic prosthesis, is a possible consequence of this action. A full conversion to The Dark Side is also a possibility, though only observed in 50% of cases.
 

madquadbiker

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Last I checked, when the end of the quarter comes around Tesla doesn't like having cars sitting in the factory waiting for parts. Lots of corners get cut.

If the clamp assembly to hold that down wasn't in stock and you have 50 cars which are ready save that one piece, you can bet at some point in time either the manager or the engineer in charge was told "Just get it out the door". Things can look like hell but still do their job.

People talk about not wanting the early cars off the assembly line. I don't want the ones which roll off the assembly line on the last days of the quarter.
Or Friday afternoon.
 

jerhenderson

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I don’t see how you could imagine that a car manufacturer (especially an electric car manufacturer) could possibly not consider galvanic corrosion. My biggest concern with some of the direction I see Tesla going is their née love for adhesives in lieu of mechanical fasteners. I get that adhesive technology has come a long way but in my opinion adhesives are less reliable than mechanical or welded connections. The new structural battery pack glued together is a concern and I am fairly certain that Tesla’s solution to adhering the stainless shell to steel body is likely through structural adhesives, which would probably mitigate the galvanic corrosion. That’s just my guess.
All vehicle manufacturers use adhesives so your concern is entirely unfounded. As for the corrosion, their engineers are not dummies and I'd bet my scrotum they've solved it.
 

LDRHAWKE

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The marine industry has been dealing with galvanic issues between aluminum and stainless for years. Obviously the type, finish, and grade of aluminum and stainless are all important. This is a photo of an anodized extruded aluminum boat rail fastened and has direct contact with 316 ss bolts on my sailboat with no signs of corrosion, even after 41 years. I am confident Tesla has given thought to the issue.
F5EA9696-DCC3-462D-9520-C337CE8CDAB2.jpeg
 
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georgehawley

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If there is no electrolyte, I should think there would be no corrosion.

Disclosure: I have a metal on metal hip replacement (stainless steel and titanium) that is 14 years old. The “only” “potential” issue is cobalt and chromium leaching into one’s bloodstream…
 

Chilli

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Thats a good Certified ISO facility would work.
That's a good point.
Honestly, based on the results ai doubt that US plants do have IATF16949 certificate.
But I could imagine that Shanghai has.
 

Chilli

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I am confident Tesla has given thought to the issue.
For sure they had a plan in advance. But there is also a reason why the design phase took one year longer than expected. Fails at design validation would be a very likely root cause. What exactly failed can only be speculated. But it would be insane if they don't do a salt environment test for this new composition during DV.
 

LDRHAWKE

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I think this video may answer a lot of question….other than all the stupid negative putting people out of work comments. Some how this guy ignores the over 10,000 new jobs being created. Obviously the commentator missed reading about Henry Ford in history class.

 
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