From metal powder to a perfect smile requirements ... · From metal powder to a perfect smile 2000...
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From metal powder to a perfect smile – requirements, challenges and possibilities in dental production From metal powder to a perfect smile - requirements, challenges and possibilities in dental production Concept Laser DMLM UGM Munich, 16.10.2019 Markus Kaiser, department digital technologies
Transcript of From metal powder to a perfect smile requirements ... · From metal powder to a perfect smile 2000...
From metal powder to a perfect smile –
requirements, challenges and possibilities in
dental production
From metal powder to a perfect smile - requirements, challenges and possibilities in dental production
Concept Laser DMLM UGM
Munich, 16.10.2019 Markus Kaiser, department digital technologies
From metal powder to a perfect smile
2000 degree as dental technician's journeyman 2009 degree as engineer of dental technology, university of applied science Osnabrück, Since 10 years part of the dental industry with r&d work
Backround Development of digital manufacturing processes for dental industry • scan technologies • CAD/ CAM software • high speed cutting • additive manufacturing (stereolithograpy, selective laser melting, FDM)
Markus Kaiser Dipl.-Ing. (FH) dental technology Head of digital technologies Dentaurum GmbH & Co. KG
From metal powder to a perfect smile
Facts of Dentaurum Group
• founded 1886, owner-managed family company
• 10 subsidiaries in France, Spain, Italy, Benelux, USA, Canada, Australia and Switzerland
with representatives in more than 130 countries
• product range of more than 8 500 articles
• approx. 500 employees in Germany, approx. 650 employees worldwide
• sales 2017: € 63 million consolidated
• apprenticeships in technical and commercial fields – approx. 20 apprentices and students
More information: DENTAURUM GmbH & Co. KG Turnstr. 31 75228 Ispringen Tel. +49 7231 / 803-0 Fax: +49 7231 / 803-295 E-Mail: [email protected] Web: www.dentaurum.de
From metal powder to a perfect smile
Headquarter of Dentaurum in Germany
From metal powder to a perfect smile
DENTAURUM-partners
From metal powder to a perfect smile
From metal powder to a perfect smile
From metal powder to a perfect smile
From metal powder to a perfect smile
Optimized powder properties:
• Ideal alloy composition for laser welding and melting
• Specific definition of grain size (less than 40 µm)
Advantages:
• safe and easy layering
• Homogeneous structure with no porosities
• Smooth surface aspect
• R&d and production made in Germany
Pro's of Dentaurum metal powders
Certifications:
• CoCrW-alloy (powder) acc. to EN ISO 9693/DIN EN ISO 22674, Type 5
• TiAlV-alloy (powder) acc. to EN ISO 9693/DIN EN ISO 22674, Type 4
• CE 0483
From metal powder to a perfect smile
Pro's of Dentaurum metal powders
Expert knowledge in dental fabrication:
From metal powder to a perfect smile
Dentaurum powders are approved for use on laser melting machines from Concept Laser
From metal powder to a perfect smile
requirements, challenges and possibilities in dental production
From metal powder to a perfect smile
requirements, challenges and possibilities in dental production Enhancing of requirements Medical Device Regulations (MDR) replace the existing Medical Device Directives (MDD) Regulations become effective in May 2020 Consequence: Changed and new requirements for the putting into circulation of medical devices in the European Union
Source: https://www.iag.biz/resource/on-demand-webinar-managing-requirements-operational-excellence
From metal powder to a perfect smile
requirements, challenges and possibilities in dental production Big challenge for production Dental products …have complex geometries
…are custom-made products …have high quality requirements …had a decreasing of prices/unit in the last years …have short delivery times for fabrication service
Consequence: The need of automated technology with high quality and shorter process cycles
From metal powder to a perfect smile
requirements, challenges and possibilities in dental production Digitization of the process chain • Web-based order system • Process optimized dental CAD/CAM-software • ID-tagging of products • mass customized production by using DMLM-tech
Analog or automated process steps • Postprocessing:
Heat treatment Refinements Polishing Ceramic veneering…
From metal powder to a perfect smile
requirements, challenges and possibilities in dental production Enhacing the portfolio by new applications High end parts by using hybrid fabrication (DMLM+HSC)
Orthodontic devices
From metal powder to a perfect smile
requirements, challenges and possibilities in dental production How to get perfect smile out of metal powder? Use of materials and machines from trusted suppliers Follow the instruction for use (especially with respect to the MDR requirements) Danger: changing of process parameters
From metal powder to a perfect smile
Process time of digital dental workflow by using DMLM
=> Each process step takes just some minutes/part => Heat treatment seems to have the highest potential for optimization
Step Time/unit
Accepting order ~ 5 min
Designing part ~ 10-20 min
CAM-preparation ~ 2 min
Production ~ 10-40 min
Heat treatment (one cycle) ~ 8 hours
Postprocessing ~ 5-20 min
From metal powder to a perfect smile
Testing the influence of material properties by changing process time and temperature for heat
treatment
Comparison of remanium star CL by using no heat treatment, 750°C and 1150°C
From metal powder to a perfect smile
Original heat treatment program
Start: Fill the gas box with the components,
place it in the furnace and open the argon
supply.
Hold: For stress relief heat
treatment/recrystallization annealing of the
components, the temperature must be held
at 1150 °C / 2120 °F for at least 60 minutes.
End: Close the argon supply and remove
the components from the furnace and the
gas box.
Total processing time using the Nabertherm
furnace N7 / H is approximately 8 hours.
The oxide layer which is formed during the
process can be removed using an abrasive
once the components have completely
cooled down.
From metal powder to a perfect smile
Twin cantilever part
From metal powder to a perfect smile
platform
From metal powder to a perfect smile
Production machine
From metal powder to a perfect smile
Separation
From metal powder to a perfect smile
Results: Comparison of part deformation by using different heat treatment temperatures
1150°C 750°C RT
From metal powder to a perfect smile
Micrographics results:
1150°C 750°C RT
From metal powder to a perfect smile
From metal powder to a perfect smile
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Results of mechanical properties:
From metal powder to a perfect smile
Conclusion: Changing process time and temperature for heat treatment has a big influence to part deformation and material properties
From metal powder to a perfect smile
ENDE Hier der Link zu Dentaurum 360°: https://www.dentaurum.de/360/tour_de.html Link zu historischen ZT Videos. "remanit": https://www.dentaurum.de/deu/historische-filme-19325.aspx
End of presentation
From metal powder to a perfect smile
Please visit our web side for more information Dentaurum 360°: https://www.dentaurum.de/360/tour_de.html History of "remanium": https://www.dentaurum.de/deu/historische-filme-19325.aspx
