Experimenting with wire based metal 3D printing | Metal Matters
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- Опубліковано 3 жов 2021
- Development of a DIY metal 3D printer, printing 316 stainless steel.
This project aims to establish a cost effective opensource metal 3d printing platform. Subscribe for future developments & announcements.
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Papers referenced:
"Additive manufacturing using fine wire-based laser metal deposition":
sci-hub.se/downloads/2020-07-...
"High-speed imaging and process characterization of coaxial laser metal wire deposition":
www.sciencedirect.com/science...
Love this, it's like going on a journey through your process
Bro ! you're an example to me, I wish I can work this hard on my Projects
Keep doing it, we all hope you'll make it !
The issue you encountered with the heat is well known within WAAM. Usually, they have some mathematical model with a feedback loop to compensate for it. But it's hard to get rigth.
What's crazy is that you can get 5-axis CNC milling machines that have laser metal printing from companies like Mazak. You are doing some awesome stuff!
Thanks for share the vid，thanks for suporting our 915nm 200W laser.
keep em coming!
At the risk of overcomplicating things, I'd say add a DC electric welder stage as well. Ideally, you would wind up with a sort of hybrid between electroplating and electro-spinning, enabled by the laser pre-heating in a non-oxidizing atmosphere. If the metal started to bead up, it would be pulled back into contact with the deposition surface by electrostatic forces (hence the "hybridization" between electroplating and electrospinning).
Definitely you should get an IR thermal camera to monitor the temperatures of the laser spot and process area. I know they can cost a couple of thousand dollars but without it you might have a very hard time progressing. Some set-ups in research even use additional coaxial CCD cameras with beam splitters to monitor the temperature within the melt pool.
You should start a patreon so we can all help speed up your research! You are helping us all learn!
You win the internet today!
The latest Publications using no argon and laser will still deposit with no issues! I would try di water. After you build this, you can save on argon by printing underwater!
You are going to need to upgrade to a 4th and 5th axis if you ever want to do overhangs, also a good idea might be to use a powder spay down the center, that way it's got momentum to stick to your parts.
So glad to see an update, keep up the work! I think wire is the best option here, as there is more control. But definitly working on a more rigid set up for better precision, and better optics will be your greatest improvements. A proper nozzle, similar to, or simply a water cooled MIG welding head to remove the thermal load from the wire as it feeds. And really tuning the laser into hemispheric arc segments around the heating zone. I am impressed the diodes are capable of melting. But maybe a combination of diode heating, and actually electrically welding the material could help control the physical lay down of the metal? The arc seems to help direct the placement of material.
This is super interesting! Thanks for doing these videos
Might want to look into 3% Hydrogen/97% Argon for the shielding gas. With orbital (automated sanitary tube welding) and TIG welding we were able to get better welds at lower amperage, thus decreasing the size of the heat effected zone, when compared to industrial and high purity grade argon. It might reduce the balling, also like TIG welding, you might want to start the laser first to create the start of a molten puddle before feeding the wire, as it would give it an anchoring point, before you move the platten. Looks like an interesting project, hope it works out.
This is so interesting!! 👀
Amazing work, this is awesome!
Idea for the .1 mm wire use the argon to "flow" it out of the nozzle that way its being pulled out and not pushed, eliminating it bending due to resistance
Try flowing argon out of the wire nozzle, around the wire, this method works for cooling wire in mig welding