Printable View
Dry ice blasting a chassis.
<video controls autoplay loop> <source src="https://diqn32j8nouaz.cloudfront.net/dry_ice_blasting_chassis_jl23.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
Previously:
https://www.homemadetools.net/forum/...951#post226668
https://www.homemadetools.net/forum/...550#post222864
https://www.homemadetools.net/forum/...981#post213910
https://www.homemadetools.net/forum/...449#post225016
https://www.homemadetools.net/forum/...989#post202875
I could watch that for hours...it looks like fun but I bet the novelty of actually wears off pretty swiftly.
Especially if you are the one having to do it for yourself, but it sure makes for a better restoration than trying to clean with a cup brush on a grinder.Quote:
Originally Posted by bob_3000
Nah. You've got like 30 minutes before you get a splitting headache. Longer if there's a breeze.Quote:
Originally Posted by bob_3000
All the more reason to wear a blasting hood with an air supply The CO2 from the dry ice would be murder on my sinusQuote:
Originally Posted by nova_robotics
You don't like having black crud come out every time you blow your nose?Quote:
Originally Posted by Frank S
Really neat system....if you can afford it.
I does look like a dream when your done blasting. I have done sand blasting on a large scale. Logging trucks, low bed trailers and equipment. Huge compressor! Us shop guys took turns at blasting. It was a ruff job. Even with the proper gear. It did the job though. Great at making your refurbishment job a new fresh start.
I don't know how they would grind the dry Ice small enough and keep it from clumping and sticking together in the hose though.
Doug D.C. Smithing
Co2 has that property of going from liquid to solid without being a gas. Liquid to the nozzle, dry ice out of the nozzle...
CO2 skips the liquid phase at standard pressure. It sublimates directly from a solid to a gas. CO2 can't achieve a liquid state below about 750 PSI.Quote:
Originally Posted by IntheGroove
It is my understanding that the pellet size is controlled during manufacture of the dry ice. It has to be kept cold (of course) and it has to be kept sealed from outside air as any moisture in the air that comes int contact with the dry ice will condense and then freeze, sticking the pellets of dry ice together. This causes problems with the flow through the blaster.
The demo that was recently posted showed the blaster machine also having a cooling unit as part of it. I think that was for keeping the air dry so it wouldn't plug up the system. If I remember right, the person in the video was cleaning the underside of a car and it took several hundred dollars of dry ice to do the job.
Will they be outlawing that soon due to CO2 emissions. ??
There is a company not far from where I live in Germany that makes these dry ice blasting machines, I got a demo of one once for my company. They poured large bags of dry ice into the spray machine, it came out the nozzle as a very high speed powder which disappeared almost immediately.
Works great, I watched it strip some pretty heavy rust, dirt and old paint etc.from some old farm trailers and ploughs they used for the demo. There was very little residue or mess to clear up afterwards, really only rust flakes and dust. Dry ice is not too expensive, and easier to haul around than heavy CO2 tanks for smaller jobs.
That's similar to what I'm used to seeing. Big blue plastic boxes arrive on site, approximately 1 x 1 x 1 m (or maybe a bit bigger), and they're filled with chunks of CO2. The chunks are maybe the size of "B" gravel. The dry ice blasting machine does the rest.Quote:
Originally Posted by fizzloid