1kW Laser Rust Cleaner
Watch it in action
https://www.youtube.com/watch?v=vTDPI4xTetI
<Neat>
>>7927102
</neat>
Don't forget your endtags
>>7927100
Cool. All the other ones I've seen where way more powerless and time consuming to the point of impracticality.
>>7927100
OK, so the operator is dumping 1kW into this grate and it still is cold enough to handle with his bare hands. A little suspicious, no?
Bonus: Youtube thought this was a relevant follow up: https://youtu.be/_5FtcExv7KY
(and it is work safe)
Cool, but it seems like it still takes longer than say chemical baths.
>>7927140
>OK, so the operator is dumping 1kW into this grate and it still is cold enough to handle with his bare hands. A little suspicious, no?
>I have no idea how heat transfer works but I'll just assume shit about it anyway
how does it feel being mentally retarded?
>>7927100
I want one.
>>7927140
is that thing a man?
that's cool and all but i think that is one of the few types of things that the laser was not meant to clean
there's a lot of holes and stuff in it for rust to hide in, and you'd have to maneuver it in lots of awkward directions to clean out all of the nooks and crannies
i would only use this on stuff like sheets of metal, but i'm no mechanic
https://www.youtube.com/watch?v=E3YCACZQ72Q
>>7927294
>9 minutes
that's fucking cool but not even close to practical (yet, anyway)
>>7927100
does that thing work on pubic hair ?
Safer than HF, but that's not saying much.
>>7927162
>Desperately attempting back of the envelope physics
At 1:33 he is touching with his bare hands the surface he has recently treated. This is iron, not famed for heat dissipating properties, for cooling fins we prefer aluminium.
>>7927441
>simple heat capacity calculation that completely disproves your shitty sentiment of a 1kW laser magically heating up a hunk of metal to the point of burning your skin within 2 minutes
>back of the envelope physics
you're a grade-A retard m8
stop skipping your fucking thermodynamics classes
>>7927466
>Still doesn't provide any resemblance to an actual calculation.
Fail harder.
>>7927495
kek, it's like you have already forgotten that you were the one who went full consipiratard by saying "HMMM DAT'S SUM MIGHTY SUSPICIOUS BCUZ HE TOUCHED IT HERPADERP"
I don't have to calculate jackshit to call you a retard for assuming stupid shit on the basis of an advertisement video from a company that builds laser-based derusting equipment
literally kill yourselve, you fucking schizoid downy
Smells like BS
Until somebody says how it works I'm not buying it
For all I know it could be red dye that decomposes in the laser instead of actual rust
>inb4 lol it like gets lasered lol duh
I bet you know all about lasers
>>7927513
The heating lasts for about 80 seconds. At 1 kW that is 80 kJ. Heat capacity of iron is about 0.5 kJ/kg K. So the heating for 1 kg piece is delta T of 160 degrees or 80 degrees for a 2 kg piece. Starting at room temperature at about 20 degrees we would have heated this to 100 degrees plus.
The laser is acting on the surface so the surface woulds be hotter than the core.
For not taking part in the debate you sure debate a lot.
>>7927529
>At 1 kW that is 80 kJ
>completely ignores that most of this is used to burn away the rust
top tier calculation you got there
check your eyesight and stop skipping classes in favor of shitposting on /sci/
sage goes in all fields
>>7927538
>>completely ignores that most of this is used to burn away the rust
Bait was never this foul.
>>7927529
The energy is burning off the rust.
A kettle is 3 kw.
I'd say it's pretty cool.
>>7927548
Laser ablation can indeed clean surfaces without significant heating of the bulk material, why don't you try reading up on things before shitting all over yourself.
>>7927570
>A kettle is 3 kw.
Sure. Just don't forget about heat capacity.
For iron this is about 0.5 kJ/kg K.
For water it is 4.2 kJ/kg K which is why it takes a long time to heat water.
>>7927623
The thing is, how much of these 80kJ stay in the main iron body and how much leaves with the rust?
we can't really say how hot it get's if we don't know how much energy it absorbs
DOES THIS MEAN WE'LL HAVE REAL LASER GUN WEAPONS SOON????>?>
>>7927673
>Be on the run
>See cop with a laser weapon
Point at him and laugh my ass off as he tells me to get down
>Throw down a smoke grenade and watch as he fails all attempts to get m
Or even a fire extinguisher will do.
>>7927692
Idiot, laser will fry right through smoke.
>>7927529
We've got a highschooler over here
>>7927140
Dude, this thing doesn't produce heat since it's a superconductor.
>>7927140
Pulsed lasers cause localized shock waves that eject most of the hot (and partially-vaporized) material (and much of the surrounding cold material) from the surface of the part. The heat from the laser doesn't really have time to significantly transfer into the part itself.
>>7927529
>high
>school
>high school
>high school detected
>the school is high
>>7927529
The guy would suffocate. Unable to stand, he would be wiggling around on the floor like Spaghetti on Ice©. It'd be a miracle that anyone could film this at all. Or are we assuming there's friction and air in this high school level physics, idealized world of yours as well?
>>7927100
I wonder what is the range of this thing
>>7927100
btw, this is legit
>>7929717
Not much, probably focused on a spot a few inches in front of it.
Fun fact is that you can shoot it at your hand without danger.
