Selective Laser Melting Maschine SLM®800

With an extended z-axis build envelope measuring 500 x 280 x 850 mm and available in a quad-laser configuration with four 400 W or 700 W lasers, the SLM®800 efficiently builds large components at up to 171cm3/h. This efficient build rate and large build envelope, combined with integrated powder handling and the design freedom afforded by selective laser melting, open new possibilities for large-scale production parts.​

A clean process chamber is essential to successful builds with acceptable mechanical properties, especially in a process chamber where longer build times increase the amount of soot in the chamber. The optimized inert gas flow of the SLM®800 efficiently removes soot from the build chamber, ensuring excellent process conditions. With a continuous stream through a sintered chamber wall, the enhanced gas flow creates constant conditions at the work surface as well as protecting the beam entry glass from contamination to not hinder the lasers. The SLM®800 is also equipped with a Permanent Filter Module to further maintain a clean process chamber resulting in consistent atmosphere conditions that ensure optimal build quality.

Offered with a manual unpacking station for single-machine setups, the SLM®800 combined with the SLM®HUB fully automated handling station maximizes machine uptime and offers a no-contact powder solution for production processes.

 

Customizable Unpacking Solutions

PRS 800

For single machine operation the PRS 800 is available for the manual unpacking of the build cylinder. After the completion of a build the build cylinder is removed from the machine and into an unpacking station across a linear axis. The powder is manually removed from the build with an integrated blasting tool and vacuum operated through a glovebox in the unpacking station. The inert atmosphere of the PRS 800 and powder management system ensures the quality of the powder is maintained for future builds and minimizes any potential powder contact by the operator.

The PRS 800 offers users a manual entry into large-scale part production. The basic unpacking station is upgradeable to the SLM®HUB to facilitate ease-of-use and minimize machine downtime when ramping up to production or integrating a multi-machine setup.

SLM®HUB

The SLM®800 reaches peak performance when paired with the SLM®HUB fully-automated handling station. This integrated solution features automated transport of build cylinders with dedicated locations for pre-heating and cooling in an inert atmosphere. The SLM®HUB also removes manual powder handling from the production process with a centralized powder supply and a powder removal chamber that rotates and vibrates the finished substrate plate to automatically separate all unused powder from the finished part and recycle it back to the sieving station for reuse in future builds. All machines connected to the SLM®HUB are fed metal powder through vacuum technology from the central powder station creating a completely closed-loop powder management system.​

Up to five SLM®800 systems can be modularly connected to and operated from a single SLM®HUB. With a build cylinder magazine (BCM) multiple build cylinders can be handled in parallel to optimize machine uptime and scale to full production.

 

Quality Assurance of the Production Process

A comprehensive monitoring and quality assurance system enables a high degree of process documentation and verification. The Additive.Quality product family is key to a controlled, high-quality build.

Melt Pool Monitoring (MPM) is an available on-axis tool for visualizing the melt pool in the SLM® process. Data from MPM can be used as a resource for efficiently developing and evaluating the process parameters. In the production of safety-critical parts, the data collected serves as documentation for quality assurance in the production process. The recorded data enables conclusions to be drawn regarding irregularities during fusion, which can lead to anomalies in the manufactured parts.

Laser Power Monitoring (LPM) is an available on-axis monitoring system that continuously measures and documents target and actual emitted laser output throughout the production process. On the one hand, the module can be used as an early warning system for preventing machine downtime with targeted measures when irregularities occur. On the other hand, it makes an important contribution to quality assurance thanks to its process documentation.

Layer Control System (LCS) is a testing and documentation system that examines the performance of each powder layer. Developed specifically for the SLM® process, it monitors the powder bed and detects possible irregularities in coating. The LCS visually detects powder preparation and execution after each cycle and, if necessary, reacts before damage occurs in the process.

 

Software Solution – Additive.Designer®

A scalable software solution for the easy data preparation of complex components, Additive.Designer® offers full process-chain integration with each step from machine selection to postprocessing taken into consideration during data preparation. The intuitive user interface offers efficient and simple data preparation, in addition to the software‘s optimized part orientation guidance, and SLM Solutions‘ unique support structures. For users scaling to series-production Additive.Designer® offers production management options such as administration via web browsers, user rights management and processes traceability.

Build Envelope (L x W x H)500 x 280 x 850 mm reduced by substrate plate thickness
3D Optics ConfigurationQuad (4x 400 W) Quad (4x 700 W) IPG fiber laser
Build Rate (Twin 700 W)up to 171 cm³/h*
Variable Layer Thickness20 μm - 90 μm
Min. Feature Size150 μm
Beam Focus Diameter80 - 115 μm
Max. Scan Speed10 m/s
Average Inert Gas Consumption in Process 5-7 l/min (argon)
Average Inert Gas Consumption Purging70 l /min (argon)
E-Connection / Power Input400 Volt 3NPE, 64 A, 50/60 Hz, 8 - 10 kW
Compressed Air Requirement / ConsumptionISO 8573-1:2010 [1:4:1], 50 l/min @ 6 bar
Dimensions (L x W x H)dependent on setup
Machine configuration for all types of metal powders / Technical changes *depending on material and part geometry