Cold Welding Metals In a Vacuum

Подписаться 4,8 млн

Просмотров 662 тыс.

50% 1

In this video I show you how it is possible to cold weld metals together in a vacuum. I talk about galling vs cold welding and how it caused problems on the Galileo Spacecraft.
Get Your Experiment Box Here: theactionlab.com/
Checkout my experiment book: amzn.to/2Wf07x1
Follow me on Twitter: / theactionlabman
Facebook: / theactionlabofficial
Instagram: / therealactionlab
Watch other popular videos from my channel
Gömböc-The Shape That Shouldn't Exist
• Gömböc-The Shape That ...
Shooting a Nerf Gun Backwards While Driving At The Bullet's Speed Forward
• Shooting a Nerf Gun Ba...
Superhydrophobic Knife Slices Water Drops in Half
• Superhydrophobic Knife...
Real-Life Invisibility Cloak Can Hide Anything! How Does It Work?
• Real-Life Invisibility...
What's Inside the Worlds' Fastest Heat Conductor?
• What's Inside the Worl...
Can You Use Umbrellas Instead of a Parachute?
• Can You Use Umbrellas ...
Opening a Bottle of Liquid Nitrogen Under Water!
• Opening a Bottle of Li...
Warning: DO NOT TRY-Seeing How Close I Can Get To a Drop of Neutrons
• Warning: DO NOT TRY-Se...
*Any experiment you try is at YOUR OWN RISK. The Action Lab assumes no responsibility for any injury if you attempt anything you see in this video or on The Action Lab channel.

Наука

Опубликовано:

24 ноя 2020

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 1 тыс.

@TheActionLab 3 года назад

At 7:20 I definitely did not mean Celsius I meant Fahrenheit, lol. I don’t think I’d be very comfortable in a 60 degree Celsius lab.

@ancovwojak6058 3 года назад

Ok.

@adriancorella5662 3 года назад

xD you deserve an Oscar

@chikenmorris7170 3 года назад

Was just about to comment about that 😂

@prakharsharma9263 3 года назад

hahaha i did actually thought what are u saying love from india bro❤️❤️

@Bnslamb 3 года назад

Pin that comment or you a lot of comments about it.

@marzbroz420 3 года назад

So when I push these two pieces of aluminium together, they should stick together. But they don't. (Vsauce music).

@ichweinicht1858 3 года назад

Blah blah blah, right? WRONG!!!

@Joshua.26 3 года назад

Or.. Are they?

@ichweinicht1858 3 года назад

mathologer, Action lab and Vsauce 2 ❤️❤️❤️

@isaach1447 3 года назад

Are you sure this is cold welding and not friction welding? When you put them in the bag and the bag squeezes them, you could have a little bit of friction that could raise the tiny contact points above 85deg. You should put them in the freezer for a while and then try again.

@isaach1447 3 года назад

@Joe Duke I’m aware cold welding is occasionally use of space experimentally, my point was that this is not cold welding. This is friction melting gallium which then cools and fuses the pieces together

@FallLineJP 3 года назад

Great video! Two questions: 1) For the vacuum chamber test, wouldn’t you need to remove the oxide layer that is already present on the surface of the two metal pieces? Just putting them in vacuum does not remove the oxide that is already there 2) Would an inert atmosphere (nitrogen?) work instead of a vacuum?

@phxgen 2 года назад

IME: yes, no. 'twas argon though, no means to try n2. It's freaking wicked hard to find LN2 in this city of five mill nutjobs, I don't get it. "Most of our atmosphere? Sorry, we don't carry that. You want a bunch of a highly unstable fuel, dissolved in acetone, in a tank full of concrete for super cheap, though? Comin' right up!"

@phxgen 2 года назад

Strange having no mention of having to buff off oxide (sulfate, etc) layers to cold weld. Props for knowing stuff, stuff knowers ftw!! So yeah, big time yes to that...unless you're cold welding fine gold or something, then you can just wipe it clean first. I suspect n2 wouldn't do anything. Moreso than argon or any other noble really. Stuff I can pretty easily cold weld with the same process in an ultra high vac regime, does nothing of the sort in a vessel thoroughly purged of air and filled with Ar. I'd imagine inert gases present between the pieces meant to be welded would do what it typically does: be inert, and occupy space between the metals. I wonder if you could _pressure_ weld gallium(for instance)? Not like smashing two pieces together, I mean like putting two pieces in an *extremely* robust vessel and pumping it to 1500 bar or something. That'd be cool.

@FallLineJP 2 года назад

@@phxgen Very interesting, thanks!!

@lucaslucas191202 2 года назад

@@phxgen Just buy liquid nitrogen and let it boil?

@phxgen 2 года назад

@@lucaslucas191202 That's the problem, I haven't (yet) found anyone in this city that'll fill my little dewar. The only place I've found thus far that'll sell me LN2 is like 45min away & they won't fill my dewar, instead they want people to rent their enormous dewars for like $850 & up.

@UncleKennysPlace 3 года назад

Given the melting point of gallium is under 30° C, the slightest friction may cause spot welding.

@kbee225 3 года назад

Friction welding.

@ehodovic 3 года назад

Exactly what I was just thinking.

@danoberste8146 3 года назад

The problem with welding gallium together is that you have to superchill gallium to get it to resolidify. It will stay melted down to pretty low temperatures. I have some gallium that I have to put in the refrigerator for several hours to get it to change back to a solid. It will very slowly crystalize even when it's ~5° C

@OnTheRiver66 3 года назад

The thermal conductivity of the metal is too great to allow heat buildup at the contact point with slight friction.

@animationspace8550 3 года назад

you have to realize it has to cool back down

@stevecollins2770 3 года назад

I'm skeptical about whether you were able to actually cold weld. My understanding is that for cold welding to be successful, you have to get the surfaces scrupulously clean. I wonder if what happened was that a vacuum was created between the two pieces of metal and the edges were so well sealed that air could not get in. You probably had about 1.5 sq-in of surface area there, which would mean around 21 lbs of air pressure. When you take new microscope slides out of the package, they will stick together because they are so flat that the air cannot get between them. (Idea for an episode?) High karat weight gold should be easy to cold weld because it has no oxide layer. Would it work to put a sheet of gold leaf between two very flat silver ingots?

@arisoda 2 года назад

Those surfaces were crude af, so I doubt it could have been held together by a mini vacuum. Maybe grease held them together

@rossbrumby1957 2 года назад

He said dissimilar metals have different crystalline structures so don't work. But by his theory, 2 gold ingots that are dead flat and smooth, and clean should work. His attempts were relatively filthy from fingerprint sweat/oils let alone not totally flat for good contact. Pretty poor excuse for a lab experiment.

@Newt2799 2 года назад

The two ingots still had the oxidized layer from being exposed to the air previously. That layer does not just go away from being in a vacuum. The oxidization had to be scratched off on both ingots by mechanical manipulation. Only a few small scratches were made and connected which is why it was so easy to pull apart.

@theangledsaxon6765 Год назад

@@Newt2799 right but I think he was thinking about the possibility of the bits being vacuum sealed together instead of actually being cold welded

@schwarzerritter5724 Год назад

Yes, it looks more like wringing gauge blocks together.

@andrewjvaughan 3 года назад

but... removing the air doesn’t magically make the oxide layer disappear? it only would keep it from forming after forging

@theoverseer393 3 года назад

That’s why gallium/indium is being used IIRC

@orchdork775 3 года назад

Yea, I was wondering why ActionLab didn't remove the oxide layer first, but then I remembered that he would have to do that *inside* the chamber with a full vacuum pulled, which sounds like it would be ridiculously difficult haha. He would probably need a much bigger chamber, along with specialized tools/gloves that could be controlled remotely, which I'm pretty sure only a professional laboratory could pull off. Oh well, I'm sure that somewhere out there is a cold welding video with a truly accurate demonstration :)

@orchdork775 3 года назад

@@theoverseer393 I thought he said that gallium has *less* of an oxide layer, not no oxide layer, but maybe I'm wrong. What confuses me is that I don't think the titanium antenna on that satellite was being squeezed by anything, so how could have cold welded shut if this demonstration is accurate to what happens in outer space?? Even with the squeezing, the gallium in this video was barely welded together, so how could a titanium antenna get welded stuck just sitting out in space, without any outside pressure on it? I thought it must be because the oxide layer on the satellite had been ablated by solar radiation, while the gallium in this video still had its oxide layer. I've tried looking it up to see if I'm right, or if there is something else going on, but I can't find anything.

@wolfsiejk 3 года назад

Thats why you need to twist and press to scratch the metal to get it off

@andrewjvaughan 3 года назад

@@wolfsiejk yeah... oxides are SUPER hard - simply scratching or twisting the metal won’t do that

@velocitysam4185 Год назад

The fact that it didn't work the first time shows us how genuine your channel is.

@blackopsownage 3 года назад

I asked for this is the comments ages ago, never thought he’d get round to do it! Great video as always.

@m.s54116 3 года назад

I messaged him on twitter about this too some months back and he he replied he is a good person

@AbdullahSayyid 3 года назад

Same here kid

@Caerus256 3 года назад

Same here, i asked him to do it 2 years ago and he did it now.

@MammaOVlogs 3 года назад

oh really? wow , way to go

@Speeeedy 3 года назад

Who asked?

@shashank7220 3 года назад

man i was so sccared about your fingers getting stuck inbetween the 2 monster magnets

@markusgarvey 3 года назад

i was gritting my teeth. little Neodymium magnets can hurt you.

@youtube.commentator 3 года назад

@@markusgarvey I usually pay extra for them to hurt me

@SergeantExtreme 2 года назад

@@youtube.commentator Kinky.

@sleepful1917 2 года назад

no you weren't

@shashank7220 2 года назад

@@sleepful1917 yes I was

@joedragich 2 года назад

James, your genuine excitement over the things you discover in your videos is infectious. Thanks for the killer content!

@theproGAMAS 3 года назад

Yo you’ve been posting my favorite topics these past months. Love it man

@dahahaka 3 года назад

Great video, well explained, i like how you showed us how it behaves both with oxygen and without in the same setup (magnets), and also how you mentioned the temperature as i was slightly worried that the gallium might be transfering your body heat, but the room was apparently cold :) credit where credit is due, keep it up!

@paulcrouzat6657 3 года назад

This is so cool! I have an oral presentation to do at the end of my year and your channel is a gold mine of intersting science phenomenons. Thank you for the inspiration! Love your vids

@Dope-to5pi 3 года назад

Watch Tom Scot

@kratekgames7610 3 года назад

7:17 Shouldn't it be Fahrenheit? Galium melts at 29,76 °C

@Yusso 3 года назад

yes clearly fahrenheit.

@jamesbrown99991 3 года назад

I'm pretty sure he'd be dead if it was 60°C in his room.

@GammaStyleGaming 3 года назад

@@jamesbrown99991 heard of a sauna?

@matiasivanarevalosbenitez811 3 года назад

@@GammaStyleGaming lol that depends on the core body temperature, if your body temperature gets to 60°, you'd be pretty dead

@GammaStyleGaming 3 года назад

@@matiasivanarevalosbenitez811 yes but we were talking about ROOM temperature

@InstinctRush 3 года назад

You have the least click baity titles.. I usually have to force myself to watch your videos because whenever I do watch your videos I'm never disappointed.

@Spicystachegamer 3 года назад

Love this channel you can always learn about new things or even thought experiments.

@matheww7847 Год назад

I don't think they were bonded at all. There is a pocket in each puck, you created a vac between them that held them together

@user-vn7ce5ig1z 3 года назад

What about wringing gauge blocks together? Is that cold-welding or galling? 🤔

@barkingbarker8291 3 года назад

Both as they're basically the same

@JamesBailey123 3 года назад

Neither it turns out, check the sixty symbols video on it. It turns out that its just that when you make metals extremely flat to the eye, then when you push them together, they form microscopic suction pads, like the kind that hold your phone holder to your car window, just microscopic. They verified this by adding oil to the surface, and a bit like licking your suction cups, that improved the bonding. If it was cold welding, the oil would stop it working, and secondly once you joined then pulled apart your gauge blocks even once, you'd have microscopic mountains and valleys from where it didn't cleave cleanly, so it wouldn't work twice.

@peckcf 3 года назад

Great to see this in action, thanks.

@MohammadSharulMizwanMdSalleh 3 года назад

Awesome as always!! Keep it up!

@guys_animations 3 года назад

3:46 that "close" sounded like it had some autotune on it, lol

@fhsjdjskkshi 3 года назад

Lol yeah

@guys_animations 3 года назад

@@fhsjdjskkshi BREUH

@EzeePosseTV 3 года назад

Indium to Aluminium: You don't have the Gall to join in the open. - Aluminium: Your bad jokes can't foil my plans.

@catdaddy666 3 года назад

looool

@thesilversurferhackerking 2 года назад

I have always been amazed by you experiments. Also you make it so informative and interesting. Keep it up bro.

@akashrodge5431 3 года назад

Beautiful .... sensation of the Practical Physics ❤️❤️❤️ dopomin running through my brain

@vasudevraghav2109 3 года назад

I was about to look for cold welding on youtube, lucky enough TheActionLab uploads Day=Made!

@danielmcdowell9526 3 года назад

It's called ringing when you get to pieces of like material to stick together we use this method in qc labs to put gage block together.

@sleepful1917 2 года назад

i think it's wringing

@brostelio 3 года назад

You are a joy to watch. Great content!

@bin-14amanmangrulkar36 3 года назад

This is so interesting and informative thank you sir

@ericcwalinski 3 года назад

I have a little concern about how you performed the experiment in the bag. You performed a twisting motion, which should generate some friction, potentially causing a small amount of liquid Ga to be produced, and then resolidify the two pieces together. Might be something to consider.

@bepisboi7370 3 года назад

he is more informative than my school teachers

@arthjai 3 года назад

Damn true

@Luco.26 3 года назад

hahaha

@EXZRB 3 года назад

That a good looking pickle ngl.

@momoreview5555 3 года назад

HEh iSs MoR3 inForMatiVE tHaN MY SchO0l tEAchEr$

@motionelco 3 года назад

He makes a lot more money than a teacher

@ProjectPhysX 3 года назад

Top notch content as always!

@Olaf_Schwandt 3 года назад

I love your enthusiasm

@grifferkay9253 3 года назад

Cold welding His nose : Feels cold let's swell

@adminscamp2563 3 года назад

Hey Action Lab, put ice cubes in your vacuum chamber. Let us see what happens.

@ADVERSE04 3 года назад

They will just melt....😂😂...why does it seem interesting to you....there will be nothing worth significance

@marsen7350 3 года назад

@@ADVERSE04 shut up

@tuyiren781 3 года назад

@@marsen7350 shut up

@ADVERSE04 3 года назад

@@tuyiren781 😂I don't know why people find it interesting.The ice will just melt that's it what do they expect the water to flow or something😂 ,well this is a common misconception among people that gravity doesn't work in no pressure areas

@FuneFox 3 года назад

@@ADVERSE04 you must be a fun person

@MuhammadDaudkhanTV100 3 года назад

It's so superior ideas and good work

@justinmathew130 2 года назад

Thank you, this is a great and new information

@NBC_NCO Год назад

There's another kind of very unique welding done with explosives. Under extreme heat and pressure you can weld two dissimilar metals making a custom alloy to better suit your needs such as aircraft skin for example.

@mage3690 Год назад

Friction stir welding also does that, but you can't use it for deep (beyond 1 inch) welds without a special machine.

@traze_gamer2004 3 года назад

this is so cool no..this is AWESOME

@SirGlazer 3 года назад

Lolf unny pun

@fatonisodiq9341 3 года назад

Love this cool experiment

@TheShattenjager 3 года назад

I got here because of a comment on a reddit thread when we were talking about this power tool that astronauts use, and someone mentioned cold welding. Then it was like “whaaaat?” and then yup, here’s a link to a video and : boom, I subscribed. This kind of channel is the bread & butter of my RU-vid subscription list. LOVE IT

@mrolafdotcom 3 года назад

Galling is one of the reasons we don't typically use stainless steel anchors for pool safety covers. They are made from brass since they resist galling and oxidize to a nice dark finish that compliments most deckings.

@isaach1447 3 года назад

@ernestoterrazas3480 Год назад

Very interesting most of the time you present fabulous videos congratulations.

@horacio6537 3 года назад

Damn, this is so satisfying to finally hear about.

@AJ_Stark007 3 года назад

I just love this Channel I'm a fan of Physics It's very interesting!

@LucasTheBot 3 года назад

Physics is fun until you have to do an exam... school ruins everything

@neutronenstern. 3 года назад

@@LucasTheBotIt depends on the teacher if the exams are fun or not Might be in physics, that you get a lot of joy, when you have to calculate how many photons will come out a green laser every second with 3000 W.

@AJ_Stark007 3 года назад

@@LucasTheBot Concept wise Physics is Fun But yes I agree with you, exam wise it can get bad a lot of times But as far as you understand the depths of the vast knowledge that Physics provides you, those tests should not matter. Just that fun of learning is more than enough!! That's my take. What say??

@frogz 3 года назад

you should check out fermilab @atharva joshi, because physics is everything

@ninopino12 3 года назад

Your hair looks great bro❤

@ichweinicht1858 3 года назад

He is simply amazing.

@mikedunn8427 3 года назад

Just learned about cold welding and was going to ask action lab to make a video on it and then found this!

@talongrayson 3 года назад

Get some engineering slips. They're so perfectly smooth that putting them together essentially creates a vacuum between them and they stick together like magnets, but they're not magnetic.

@vasurvawadajkar 3 года назад

Hey, gallium has a melting point just above room temperature so when you put it in a vacuum, its melting point becomes low and it just sticks to itself! No cold welding today!

@freezinfire 3 года назад

I learned the property earlier, cool to watch it in action

@rodchallis8031 3 года назад

I worked in Q.A. in manufacturing for years. We used to "wring" gauge blocks together. The phenomena is not entirely understood, but "cold welding" is thought to be in play. Galling: We press fit steel parts together and with certain product designs we'd get galling, and it took a lot of small process changes to eliminate it.

@MartinPurathur 3 года назад

I like these videos a bit more than the ultra black paint kind. Keep it up!

@claudiavanvalkenhoef9971 3 года назад

How did you send this 27 mins ogo the video was made 9 mins ago

@jareknowak8712 3 года назад

@@claudiavanvalkenhoef9971 physics do not work in a vaccum chamber :)

@xploration1437 3 года назад

Martin James Who asked you?

@FIRE_STORMFOX-3692 3 года назад

I remember learning about cold welding in space as a kid, it was so mind blowing, one of many reasons why space it's cool figuratively and literally

@Chris.Pontius 3 года назад

You went to space as a kid? That's amazing.

@FIRE_STORMFOX-3692 3 года назад

@@Chris.Pontius hahahaha nice bro you make my day

@rossbrumby1957 2 года назад

@@FIRE_STORMFOX-3692 danger, Will Robinson!

@SigmaJAD 3 года назад

Love your stuff

@Smushroom 3 года назад

Bro you were my science teacher during quarantine thank you

@69k_gold 3 года назад

James in 2040: Today we're going to merge Sun and Mercury together and see what happens

@deadski8860 3 года назад

you think humans can survive that far while Covid is here

@mlgklipz2543 3 года назад

@@deadski8860 COVID will either last and end next year or it will go on for a long time but with very low cases for the next 3 or 4 years so we will have to see

@hacker1oo173 3 года назад

@@mlgklipz2543 Nice to hear!

@adityapratapsingh2518 3 года назад

@@deadski8860 well we survived ww1 ww2 and black death I think covid is kida small compared to these all.

@gabrieldelatortilla1 3 года назад

more like 2400

@F_L_U_X 3 года назад

3:17 - HOLY SHIT

@opesenator 3 года назад

i love this guy and his videos.

@Pheaker12 3 года назад

I was waiting for video like this for ages lol that was instantclick without thinking

@Viewable11 3 года назад

Cold welding also works with hard metals, if they have perfectly plane surface and you slide them above each other. Distance or mass calibration items are well suited for this. Such items are stored in a fluid to prevent this from accidentally happening.

@infernaldaedra Год назад

Basically a shop grease, filtered kerosene, WD40 but generally you want a rust preventative that is easy to remove so kerosene and WD40 work very well.

@Bruh-vd1pp 3 года назад

Ya know, I really didn't expect that you can weld using coldness. It's so _cool_

@nuiob1766 3 года назад

theres a similar thing with ice (ik its not metal) but its kinda the same thing you push 2 pieces of ice together and they get stuck

@Bruh-vd1pp 3 года назад

@@nuiob1766 that's pretty cool

@ADVERSE04 3 года назад

That's due to a pretty different phenomenon dude

@melody3741 3 года назад

Its not USING coldness.

@Bruh-vd1pp 3 года назад

@@melody3741 Yeah I know, trying to make a pun 6 months ago and I don't even know wtf I was trying to say lol

@chancebutler6472 3 года назад

mind constantly blown... by ur videos

@deepakshegaokar 3 года назад

Love your unique expirements❤👌

@researchers7998 3 года назад

The attraction between the large neodymium magnet and the even larger magnet neodynium magnet through the glass was like _a desperate boy wanting to meet his crush_ Lol

@mclaynebalzly1739 3 года назад

Wait wait wait, so is this considered... cold fusion 😂

@chakramaharjan8462 3 года назад

fantastic fact !!!

@Davidsavage8008 2 года назад

Great opening

@roborob4000 3 года назад

Is there any chance the friction melted the metal a tiny amount on the surface?

@michaelhedrick589 3 года назад

Yes but I am not good at explaining things so I’ll have to look it up but it’s something called “sublime” I think

@michaelhedrick589 3 года назад

Not really the friction but yeah friction could help it occur

@VoltisArt 3 года назад

Sublimation means turning directly from solid to gas, with no liquid stage - such as ice evaporating in temperatures too low for water, or dry ice making clouds. Not related.

@michaelhedrick589 3 года назад

@@VoltisArt yes

@bindeshwaribais7598 3 года назад

I am from indian and my name is ojas and i am of 13 years but has interest in science and i always see this man all videos how he explains that is the best thing of him he explains very clearly

@vinaythakur4742 3 года назад

Why did you need to mention your nationality, name and age?

@JeanJacket311 3 года назад

@@vinaythakur4742 I agree

@haroldbn6816 3 года назад

Cool welding tecnique.

@thevigilant266 3 года назад

Really interesting!

@simonhaddow5052 3 года назад

In large steel structures like bridges we often use Tension Friction connections. The mating surfaces are brushed free of rust and the bolts are tightened to snug tight plus 3/4 turn. This creates a kind of pressure weld between the mating surfaces that is stronger than the sheer strength of the bolts. They don’t continue to stick after the bolts are removed.

@ramakrishnanr3877 3 года назад

Yesterday I was playing around with slip gauges and my friend rubbed it together and to my surprise it sticked to each other I thought it was magnetic but today after seeing your video I found it was a more interesting phenomenon.

@jeffsiegwart Год назад

Very Cool!

@lightonfire9393 2 года назад

Very cool!!!

@pl5882 3 года назад

Stainless steel nuts and bolts will gall especially when using nylock nuts.

@pauldriscoll5010 3 года назад

Stainless steel pipe fittings are really bad for it, to the point if you dont uses something like graphite in the thread you may never separate them

@bossd.k7127 3 года назад

He is the only man who build his career from a vacuum chamber

@Seth_Lekas 3 года назад

Great job on the vid

@StefanReich 3 года назад

Are you sure the gallium didn't melt a little and bond that way?

@puckry9686 3 года назад

Melting point 85°F room temperature 60°F

@AJ_Stark007 3 года назад

7:22 Celsius or Fahrenheit

@neutronenstern. 3 года назад

clearly Fahrenheit. Or do you think 60°C (140°F) are normal house temp?

@Banana_Judge 3 года назад

@@neutronenstern. It is in my house

@neutronenstern. 3 года назад

@@Banana_Judge good radiator or do you have a very good wood stove or something. Where can i buy it?

@Yusso 3 года назад

Melting point of galium is 29.76 celsius or 85 fahrenheit. So he misspoke.

@Banana_Judge 3 года назад

@@neutronenstern. No. I live on the sun

@custard-bun 3 года назад

5:12 "it didn't stick :("

@chrisBruner 3 года назад

If you had two aluminum plates in your vaccum chamber separated by outward facing sandpaper, and pushed together. Then if you pulled the sandpaper off, thus removing the aluminum oxide, would the two aluminum plates become cold welded?

@Lucius_Chiaraviglio 2 года назад

Not sure if just that limited application of sandpaper would remove enough of the oxide -- if all the oxide-free surface is in grooves, surrounded by ridges of oxide, you still won't be able to get the metal together. You would have to do a more extensive sanding, and somehow do it in vacuum (like be in a spacesuit in a giant vacuum chamber), because if you do it in air, by the time you can get the pieces into the vacuum chamber and draw the air out, the oxide will already be back.

@Technical_Gaming07 3 года назад

Love the channel

@LucasTheBot 3 года назад

The laws of physics on earth: *exist* A vaccum chamber: "im gonna pretend i didnt see that"

@SopanKotbagi 3 года назад

bleh

@allhumansarejusthuman.5776 3 года назад

Other way round. Laws of physics exists Earths atmosphere and chemistry:I'm gonna pretend I didn't see that

@RayMak 3 года назад

I learn more in this than university

@cbkia 3 года назад

why do i see you everywhere

@kingterpin7256 3 года назад

Lol, I know why he is everywhere, he posted it on his RU-vid, but lol the comment itself made me laugh

@krishnaasopa-the-next 3 года назад

You should go india and take 8th grade because it was use to teach kid in 8th grade in india LoL

@gibsonf06 3 года назад

university is just as bad as high school?

@ADVERSE04 3 года назад

Wait....did you say that this concept is given in 8th standards books....stop kidding man....it's definitely not...

@theonescratchwonder6484 2 года назад

Thank you!

@Return_To_Sender 3 года назад

Your background music always reminds me of mass effect, I don't know if you do this on purpose, but it's nice.

@alfredoprime5495 3 года назад

Would cold welding work in an inert atmosphere like pure nitrogen or argon? Personally, unless I'm missing something crucial, I don't see why not

@SuputraBharathi 2 года назад

Surface layer of metals must be kept clean from any impurities Inertgas is gonna keep metals safe from oxide layer . Since every materials have surface roughness and can act as an air pocket ( impurity ) causing Less metal to metal surface contact . Resulting in very awful weld .

@Think_Inc 3 года назад

This guy said “together” too many times than is scientifically possible in a 10 minute video.

@AceKaliburOfficial 3 года назад

I do welding, and I am thoroughly intrigued.

@highlybasik368 3 года назад

Great content

@Blackoutfor10days 3 года назад

Sir can you make liquid metallic hydrogen in your lab.

@sweetpotato9267 3 года назад

Do you know what conditions required to make " liquid metallic hydrogen in lab"

@jayverma1592 3 года назад

Whaaaaaaat!!!!!!!

@haroldbn6816 3 года назад

Sure, let me replicate jupiter's core like presure conditions in my garage.

@TimmyTwo-Toes 3 года назад

“They finally found out it was a series of unfortunate events”, is there anything Count Olaf won’t do!

@hacker1oo173 3 года назад

He is very dedicated XD

@arjun_12 3 года назад

I love all ur vdos

@Lars_Ziah_Zawkian 3 года назад

Finally not someone using LITERALLY ALL TYPES OF WELDING and saying is cold welding. So nice work!

@Paul-ty1bv 3 года назад

Eye protection when playing with strong magnets. Shatter danger.

@maxthedog8483 3 года назад

you have to find a way to remove the oxide layer in a vacuum then find a way to place the two clean surfaces together without ever breaking the vacuum.