Zirconia Machining (Dental Project)

[Hamrabade]

Hello,

kindly suggest speed, feed , DOC and step over for Zircon machining.

Roughing 2mm  - Ball Mill

Finishing 1mm  - Ball Mill

 

  

[ostie01]

I think you'll need a diamond-coated cutter but I also think it can be wire EDM.

[BILL HUNTER]

On 8/29/2020 at 2:37 PM, Hamrabade said:

Hello,

kindly suggest speed, feed , DOC and step over for Zircon machining.

Roughing 2mm  - Ball Mill

Finishing 1mm  - Ball Mill

 

  

That does not sound fun.

[Hamrabade]

Which type of tool do you suggest....

[BILL HUNTER]

3 hours ago, Hamrabade said:

Which type of tool do you suggest....

Laser

[cam-eleon]

I'm not an expert but have done some reading. Is the Z block pre-sintered. If so then a 10K-30K rpm spindle and light fpt due to the small tools (carbide). Apparently there is going to be shrinkage 20-30% (after sintering- like making pressed inserts) but that's what I have read. Sinter then final polish and colour to suit. 

Milling after sintering??? Here's a link to some interesting info.

https://www.mdpi.com/1996-1944/12/19/3253/pdf

Enjoy and let the group know what you discovered. Maybe a few of us will learn a thing or two. I would be interested to know what worked out best for this application. I'm not involved in dental work.

[Hamrabade]

Hello,

Thank you for suggestions.

Ball mill strategy really worked on high RPM and medium range of feed. It would be more better if you have special tools for zircon material.

Below is the link for machining videos.

https://drive.google.com/drive/folders/1B_Vv0fCn3ejZnIzihk0XId1Pp-kJzsU2?usp=sharing

 

                                                                                                 

 

                                                

[cam-eleon]

Thanks for the feedback. Would you mind to mention if you milled it in the pre-sintered state? It looks like you did. Then the piece was sintered, correct. What was the appx rpm you used and feed per tooth.  Looks good, we appreciate the information you have given.