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SLM Technology
SLM
What is SLM?
Selective Laser Melting (commonly known as metallic 3D printing), consists of the iterative superposition of layers of metallic powder of approx. 50 microns on a table and its subsequent fusion by means of a laser . The sum of the sections generates a very dense piece (approx. 99.5%) of the chosen metal and of great precision.
Schema of SLM machine
It is a suitable technique for the manufacture of:
· Pieces with high mechanical and thermal resistance
· Light components
· Geometric designs complex
· Parts with internal cavities
· Functional prototypes
Parts obtained at the end of 3D printing.
SLM machines
we have five machines Renishaw, each dedicated exclusively to one material. This allows us to increase productivity, better control the process and reduce manufacturing costs.
Of these machines, three are Ren AM 500Q with 4 lasers and two RenAM 500M monolaser.
Working volume: 250x250x320 mm
Productive improvements
· Dedicated machines per material - Eliminates the risk of contamination.
· Screening and automatic recirculation of powder - Increases the productivity of the process.
· Integrated vision system - Failure analysis and control.
· Spectral real-time monitoring - Quality control.
Máquinas
Materiales
Materials
In MADIT, each machine is dedicated to a material, so that productivity is increased and the process is better controlled. The available materials are the most common in the industry:
ALUMINUM
AlSi10Mg / A13600 / 3.2381
- Lightness
- Corrosion resistance
- High thermal conductivity
- High electrical conductivity
STAINLESS STEEL
316L / S31673 / 1.4404
- High resistance up to 300ºC
- Corrosion resistance
- High ductility
- Welding facility
HARD STEEL
1.2709 / 18Ni300 / K93120
- Very high hardness
- Very high resistance
TITANIUM
Ti6Al4V - Grade 23 / 5
- Ligthness
- High resistance up to 400º
- Corrosion resistance
- Biocompatible
Periodically, the quality of the manufacturing process is verified: the results of the parameters are qualified by means of metallographic evaluations and mechanical tests are carried out.
Metallographic cuts for qualification of manufacturing parameters.
Periodic tensile tests for characterization of mechanical properties.
Post-procesos
Post-processing SLM
3D printing is only a small part of the metal additive manufacturing process. In order to deliver the final piece, it is necessary to carry out different post-processes according to the needs of each project. In order to perform these operations quickly and in a low cost, Madit has the following capabilities:
Internal capabilities
· Heat treatment furnace
· Band saw
· Turning
· Milling machine
· MIG welding
· Ultrasonic bath
External capabilities
· EDM - Wire cutting
· 5-axis machining
· TIG welding
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