ExcelTec is an independent consultancy and engineering organization in Rapid Prototyping and Rapid Manufacturing. Exceltec is providing his expertise in Rapid Prototyping (RP) and Rapid Manufacturing (RM) technologies through a consultancy program for service bureau and international company including training curse on request.
We developed and/or distribute different kind of products for Laser Sintering; for example:
Exceltec is developing new fine polymer powders for SLS technology with partners. These polyamide powders as the Innov’PA family, material by ExcelTec are especially designed for all laser sintering machines and enable to obtain models and functional parts in "engineering plastic" with long life's cycle and excellent chemical resistance. Innov'PA produces models that are functional with excellent chemical resistance. These properties make components more suitable for rapid manufacture, than other Nylon powders. This matrix PA powder product could then be individualized for fitting specific properties.
We have different grades in PA12 and/or PA11 with composite charge or not to fit to your requirements.
Please find here a selection of SLS materials “powdered” by ExcelTec !
The typical applications of Innov’PA 1550 are parts and models of design, functional, precise, requested mechanically, chemically and in temperature.
The whole of the improvements of the mechanical properties in the Innov’PA powders gives a better cohesion of the layers involving a more plastic behavior and responsive mechanics of the parts manufactured approaching the reinforced injected one. A completion by sand blasting is enough. These parts can be finished and painted if needed. A refined specifies granulometry, precise and very tightened allows to obtain an excellent resolution of contour and surface. These innovative properties make possible to consider Rapid Manufacturing. The process ability of the powder on the rapid prototyping systems is optimized; thus all the powder of a building can be re-used after sifting. The refreshing factor for regeneration, because of the adapted formulation of Innov’PA powders, is lower than the usual rates used on the various systems of rapid prototyping. We promote also specific grade as Fire Retardancy grade (FR) in PA 12 or PA 11 in this Innov’PA powders
For all this products Exceltec provide first installation starter kit on your site and on your SLS systems see in Services
- Excellent resolution of contour and surface for Rapid Manufacturing
- Mechanical properties and mechanical behavior such as injected parts
- Exploitable on any type of system of prototyping: Pluri-manufacturers
- Use continues powder cycles sifting-regenerating
- Chemical resistance of Polyamide 12 and 11
- Regeneration factor lowered
- Economic cost of exploitation (ratio Q Powder/ Number of building)
- Provisioning independent of the manufacturers
To finally present this material Innov’PA 1550 Xs in use please find here two publish documentation from our customers :
One project followed and engineered by EXCELTEC: demonstrating Drone (UCAV) with builds in several parts with our product Innov’PA 1550 by using RP and RM technology - extract from RM plateform stakeholder presentation exceltec
Courtesy of : www.rm-platform.com
UCAV Project : CAD concept with designer OL, building on an SLS system P3xx in 2 jobs of 360 mm high, with Innov’PA 1550 our fine polyamide 12 powder, then testing on dynamic bench the Ø 100 mm cold fan duct at 36 000 RPM !
New Powder enables Vacuum Metallizing on to SLS at Malcolm Nicholls Limited - extract from TCT magazine Vol15, issue 1
Courtesy of : www.mnl.co.uk
complete pdf here: SLS_Innova_PA_1550_at_MNL.pdf
Innov’PA 1550 has a finer surface finish that is reducing finishing, enabling for the first time, intricate SLS parts to be vacuum metallized. the past Malcolm Nicholls Limited has produced vacuum metallized parts, but this was a lengthy process. Firstly MNL would produce a master model using Stereolithography. Hand finishing followed using our skilled model makers to apply a perfect gloss finish to the model. This itself can take some time to get the end result just right. From this master a silicon tool would be produced; into this tool a high-temp polyurethane resin would be poured, producing a perfect replica, suitable for the metallizing process. Vacuum metallizing onto SLA parts was not successful due to the high temperature involved in the Metallizing process. Metallizing early SLS parts were also not too successful either as the “furry” surface finish meant that a lot of detail was lost in the finishing process.
This however has all changed; MNL now offer a superior new SLS nylon, Innov'PA 1550. This material coupled with their Hi- Q Sinterstation gives the component a much improved surface finish, thus creating a better surface to apply our gloss technique. The silicon tooling and vacuum casting steps are no longer needed yielding typical savings of 30-40% on both cost and timescales.