I am looking for ways to produce powder from an aluminum bar. I can't find an available grinder/mill, so I am looking for an alternative. I saw a method wherein a steel plate and a steel bar were used to produce the powder. However, I am worried that this method will introduce contaminants in the final product. More so, the method is quite tedious.
Here is a link of the said method.
http://m.instructables.com/id/How-to-make-super-fine-powdered-magnesium-or-alumi/
Thank you!
You can buy Al powder directly from the supplier. In ball milling also not possible to convert as powder since Al is ductile material
@Mr. Sasikumar
We are trying to make use of the aluminum bar we have.
By the way, how big the bars are? If they are heavy ingot size bars, Go to an aluminum atomizing facility to help you out to get powder by melting the bars and atomizing. Or you can use spin shaving technique followed by pulverizing. If you do not have problem with the particle shape, you can use ball milling using through hardened stainless steel balls provided your bars are reasonably small in size (5-10mm).
What powder shape is required for your application? If non spherical shape is OK then you can machine the bar to produce Al chips. Then you can mill the chips in a high energy attritor. Be careful with handling fine Al particles. Make sure all safety measures are in place.
Harvest aluminum powder from paint : visit Richard Nakka Website
Spin shaving is rather a better and safer technic. Never even be tempted to follow the link you sent. By continuous shaving on spin disk is the probably the safer way to harvest aluminum powder. However, surface oxidation could be an issue.
can i get aluminum powder from powder which generated by traditional milling of aluminium bar or billet ? Arun Chattopadhyay
You haven't defined the powder. Anyway, short answer is - yes you can generate flakes during comminution of aluminum bars or billets. However, size of the bars and billets must be smaller than the size of the milling media.
thanks for your reply .please can i produce powder in micro size by this technique ? in your opinion what is the disadvantages of this technique ? Arun Chattopadhyay
Yes you can.
The biggest disadvantage is the safety if it is done by dry milling. Milling through solvent is safer than dry milling. Lots of safety precautions are required for either of these processes. Secondly, it can only produce lamellar particles instead of granules.
By inert gas atomising. If you need continuous production, we can provide design of the unit. But it is expansive. Contact me [email protected] for details
Aluminium bars could be converted as machined chips through machining process and then chips can be converted as powder through ball milling process
what is the percentage of solvent (methanol or ethanol)compared to powder to get a homogenous mixture?
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