The Magic Of Citric Acid: How To Passivate In-house

[@tdg911]

Tyson I’ve said it before and will say it again your videos are always very clear and to the point. You’re a natural. Thank you for bringing us these videos. Much love and gratitude

[@MakeItWithCalvin]

Ditto! No over the top hype, just straight facts.

[@noahc6544]

One thing you could look into for the new tank is a literal thermal fuse, since you'll have a lot of water in there it shouldn't need a super high temperature rating

[@AidenJSS]

Tyson is the best. Thank you for teaching me something new.

[@paulevensen2322]

Great video Tyson! We're happy to provide our CitriSurf products and technical expertise to anyone who is interested in safe and environmentally friendly stainless steel passivation. -Your Friends at Stellar Solutions

[@jamiemacdonald436]

Tyson makes the best videos on this channel. Clear and concise. And he doesn't make me feel as though I'm getting sold something for a change. Nicely done.

[@trevorgoforth8963]

It’s not even 8AM and I already something new today! Thanks Tyson, great video!

[@travisjarrett2355]

Nice Tyson! Anything you can do to bring processes in house will save money and many times a headache. I can still smell that fire!

[@AeroenginnerJosh]

A more simplified way of stating what passivation does, is the removal if the ferrous layer of material for the components surface. Often preformed on materials with a high chrome-nickle alloy, once the iron is removed the chrome and nickel is left exposed which has greater corrosion resistance. It is also important to note that for most large OEMs you will require outside accreditation from both the OEM and an external verifiers such as NADCAP.

[@darikmatters8866]

Was just about to write something similar..

[@MurkinYuh]

Love the videos that feature Tyson, he's the man! Always so clear and concise! Appreciate every video you guy release, there's always something I can apply how I do things in the shop.

[@ryanclarke2161]

Great vid Tyson, you've got a lovely voice for this sort or work and a great pace and way of explaining things.

[@davew4304]

I don’t know why but I’m actually able to pay attention when Tyson and Barry makes a video

[@barrysetzer]

I dont know why but whenever Dave W comments, I am actually able to read it 😂😂😂

[@dirtboy896]

Always love to see a Tyson video. Man he has come a long way

[@mjodr]

Even though citric acid seems safe because everyone loves to use cute photos of oranges and downplay it like "hey, what could go wrong?", concentrated "industrial grade" citric acid products like this and Citrol are SERIOUS stuff. They are one of the best solvents I could possibly find in weeks of research. They aren't exactly splash it around and get it in your eyes and mouth kind of stuff.

[@FamTech.]

Love your video's guys ceep on going!🎉😊

[@12erplays39]

Thanks for the Video, I never worked with Stainless and also didn't know you had to do this after machining. Learnd something new today💪 Barry awesome as allways

[@donniehinske]

Good video dude! I never knew how this is done!! thats super cool to see

[@465maltbie]

You dont talk about testing procedures to prove the passivation? If you do another video about the paperwork please include that also. Thanks for bringing this up. Charles

[@danl.4743]

Did you read what it said on the document he showed? No need for verification.

[@anthonyfrey9707]

​@@danl.4743 Have you ever done work for the military. Just because a product states in their literature that it meets a particular standard does not mean that it's acceptable. In the standard, there is also a test requirement or multiple requirements that must be met in order to prove that the standard has been met. It is your job as the supplier to your customer to able to verify that the standard has been met.

[@bradleykramer1457]

Some jobs will state no verification required. But many will need verification according to the class of parts and what the engineering authority requires. Most commonly that's high humidity testing but can also include an indicator test of copper sulfate which chemically mimics the process of exposure to environmental factors. It's about proving the ability to be 'passive' to the environment. 24 hour testing vs environmental factors are generally preferred for structurally critical parts.

[@Autonate_42]

I love Barry in the background 😂

[@jeremymatthies726]

Hey Tyson, awesome job buddy on explaining this process. I had never heard of it being a thing for aerospace parts but makes sense. Its been a loooong time since I last did chemistry lol.

[@tech-utuber2219]

Samwell Tarly performing passivation on Valyrian Steel.

[@danl.4743]

I don't know why but I laughed more than I was expected to, when you said "it has an x in the name". 🤣

[@paulkraus4799]

Always love your videos Tyson , and how you break it all down in simplicity

[@왁스바른호랑이]

U give me new insight That makes my latheutube channel better than yesterday Thank you!

[@vonpredator]

For the rest of the world. 120F to 160F = 49C to 71C. 🤓

[@TITANSofCNC]

😂

[@shortbus]

What a great video sir! I'll be subscribing for sure!

[@RPrice_OG]

Passivation isn't just for aerospace. If you are a home brewer or even a professional brewer then you may want to passivate all your pretty stainless stuff. I did this a couple years ago and it was extraordinarily hard to find someone to sell and ship the acid to me. I hope that this product will be available to hobbyists at some point.

[@21mejia25]

Now I know what Passivation is! Thanks!

[@AwestrikeFearofGods]

Nice demo. Do you water-rinse in between the cleaner and the acid? I didn't see that step.

[@Berkana]

Would a sous vide machine work for that water heating step?

[@Imlibe1]

Tyson u're the best!! 👍

[@MattOGormanSmith]

There are OTS kitchen devices with stainless tanks and redundant boil-dry protection. Maybe a rice cooker or a kettle would be a good size for you (not talking to the Titans here, unless they go to an industrial kitchen shop). Some of them will have suitable thermostats for that 120-160F range too.

[@NinjaPooop]

Great video! Is heating the solution a requirement? Let’s say I don’t have a heater, could I just leave it overnight?

[@runcycleskixc]

It would be nice to show what the passivation did to the steel part, apart from looking shiny. E.g. resistance to a salty solution overnight at high temps etc.

[@darikmatters8866]

come on.. we want to see the Swiss machine turn out a shiny stainless passifier for the big baby in the lab coat.. Way to go Tyson, its been a while since I saw one of your videos..

[@skjetnis]

Man I love the huge ass lab coat

[@clutchboi4038]

Thank you for this! I weld stainless steel pipes for water filtration systems and have been wanting to build my own passivation tank. But since you are going into stuff besides exclusively CNC machining, I was wondering if y'all have thought about doing plate bending with a cnc press brake? I just got one for my business and am still learning how to set it up.

[@timmontagjr.3171]

It would be safe to so this in glass containers, correct?

[@Michael49637]

Tyson for president!

[@peterCheater]

Did you ever get NADCAP for the outside processing you took in housw?

[@mrbimsky]

Im not pro, but can i use baking powder + water for passivation?

[@willbe7442]

I love tysons videos.

[@protector7886]

Does nitric acid work better to passivate stainless steel vs citric acid?

[@palpytine]

At 120°C, how do you stop it boiling?

[@eeeeweeezeee]

Props to Tyson for not using the break room microwave for the science demonstration like I would have.

[@barrysetzer]

Beahahaha that reminds me of one time we almost boiled a part in methylene chloride in a crock pot in our office (pre-Titans). And then i read the MSDS and realized we would all die lol

[@jameslmorehead]

How about passivization with phosphoric acid such as Ospho? I use Ospho all the time for any iron item that is bare iron.

[@NoctisIgnem]

That only works for bare iron, stainless needs stronger acid

[@dutchr4zor]

Can you do a video on dimensionally stable anodising of aluminium?

[@Azalea__Rose]

Does passivation alter the final dimension at all? like a coating might for example

[@sbeprecisionproducts6729]

No it isn't adding or removing any material.

[@myszkoscielna7522]

Great video, Tyson!

[@billmcleangunsmith]

You were using 17-4, but does it also improve corrosion resistance on 300 series stainless?

[@mjodr]

You can do this on lots of materials. I've actually done it on aluminum before using a slightly different process. I'm not doing aerospace certified stuff mind you.

[@NoctisIgnem]

I do this professionally, we use nitric acid on stainless.

[@klasjanzen1165]

Waiting for the electro plating Since Barry did the anodizing, I was like: oh, I wish he did electro plating on carbon steel

[@barrysetzer]

We are all over it Klas! Stay tuned

[@jenspetersen5865]

Why not just use a Sous Vide stick for heating and you get circulation at the same time

[@AlessioSangalli]

Hello, would this be useful after TIG welding?

[@dragerx001]

tig welding put an oxide layer over welded joint and will cause it rust over time if not passivated.

[@AlessioSangalli]

@@dragerx001 so it's a yes?

[@KB-dd9xr]

Citric acid is used for skin peels so I would at LEAST wear gloves and rinse off well after this. Save your skin some surface burns!

[@kevinkc3onohelijeepworld953]

Any chance we are going to see a 10-20kw fiber laser metal cutting ?? 😊

[@thelastgs-pian9965]

isnt stainless steel rust proof so why passivate , will this work on mild steel?

[@jkg6211]

Stainless steel is NOT "rust proof"... it's more rust RESISTANT than mild steel. Passivation doesn't work on mild steel. The process eats away the ferrous metal (iron) from the surface, leaving the chromium and nickel exposed, which doesn't "rust". Passivation only works for stainless steel, AFAIK.

[@jkg6211]

Stainless steel is NOT "rust proof"... it's more rust RESISTANT than mild steel. Passivation doesn't work on mild steel. The process eats away the ferrous metal (iron) from the surface, leaving the chromium and nickel exposed, which doesn't "rust". Passivation only works for stainless steel, AFAIK.

[@VenturiLife]

That ending though.. haha

[@mlt3258]

Nice!

[@enjoyorgano]

Stainless steel is not resistant to acid. Why do we use acid to do passivation ? Do you need to wash is with a basic solution after the passivation ?

[@satchelsieniewicz5824]

its not a induction heater its a immersion heater. dont mean to be annoying all the best

[@timrussell1559]

So, a person can have themselves a thriving and profitable business by soaking metal parts in warm orange juice? Sign me up!

[@jenspetersen5865]

It is amazing to see Tyson's development from clearly having a lot of autistic traits, to really increase his social skills. Great example!

[@raynerfpv2471]

I would sign up for a class given by Professor Tyson 😂

[@SuperTommieNL]

A simple float switch with low water power cut off would have prevented the fire. 50 bucks or so

[@africantwin173]

E330 for my beer Tanks.

[@Vankel83]

Did you dump the Citric Acid down the drain? Or di you put in a holding drum like bad coolant to be picked up and dispose of properly.

[@danl.4743]

No. He added sugar to it and he keeps it in the fridge for hot days.

[@hamzanawaz7945]

♥

[@yoyobah1862]

If you do this regularly it would be a good investment to buy a Sous Vide machine, they're not expensive.

[@BigT89]

NadCap accreditation

[@easyBob100]

Most of the citric acid used in the world comes from distillation of a fungus.....iirc

[@anwaryousaf4237]

Fire .... ha ha and you are telling workshop owners to do passivation by themselves.

[@chauvinemmons]

Thought you guys had a nasty experience doing plating and decided not to be doing that kind of thing anymore.

[@TITANSofCNC]

We talk about our mistakes in the video and how to prevent them