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Technology

Multi Jet Fusion (MJF)

3D printing MJF is a process based on the fusion of powder layers.

Installation space

  • 380 x 284 x 380 mm

Applications

  • Functional series components and small series
  • Functional prototypes
  • Objects with complex geometries
  • Consumer products
  • Architectural models
  • Aircraft industry

Advantages

  • Very high accuracy and resolution
  • Products are very stable and almost isotropic
  • Fast and cost effective printing technology
  • For larger quantities/small series

Multi Jet Fusion (MJF) is a 3D printing technology process based on the fusion of powder layers. The plastic powder is applied step by step in thin layers. Each layer is fused at the appropriate points by a print head ("fusing agent") that applies a heat-conducting liquid. To ensure that the layers are formed precisely, an insulating liquid is applied alongside the heat-conducting liquid to delineate the powder. No support structures are needed with this technology allowing the printing of complex geometries.

The MJF process is complex, but also one of the fastest 3D printing technologies.  Additionally the components are waterproof and almost isotropic, i.e. the strength is the same in every tensile direction. The resolution during printing is very high, which results in a good surface quality. For multi-coloured parts, the colour information is directly included in the 3D print file.

If you are not sure whether MJF or SLS is a better fit for your project, read on here: MJF or SLS

 

Suitable materials

PA-GF (MJF)

MJF-PA-GF is a thermoplastic filled to 40% with glass beads.

3D-Druck-Materialien-Jellypipe-Platzhalter-Bild

Features:

  • Density [g/cm3] 1.3
  • Tensile strength [Mpa] 30
  • E-modul [GPa] 2.9
  • Heat deflection temp @0.45MPA [°C] 170
  • Heat deflection temp @1.81MPA [°C] 113
  • Elongation at break [%] 10

Advantages:

  • Optimum mechanical properties
  • With 70% a high recycling rate
  • Complies with UL-94 fire protection standard as well as UL-746A standard for plastics
  • Enables components in the best designs

MJF-PA-GF is a thermoplastic filled to 40% with glass beads. Optimum mechanical properties are as much a benefit of this material as a high recycling rate of around 70%. In this way, MJF-PA-GF makes it possible to significantly reduce the unit costs of production.

Polyamide PA 12, 3D printing plastic, technology MJF

Engineering plastic with good mechanical properties

3D-Druck-Materialien-Jellypipe-Platzhalter-Bild

Features:

  • Density [g/cm3] 1.01
  • Tensile strength [MPa] 50
  • E-modul [Gpa] 1.9
  • Elongation at break [%] 17

Applications:

Perfectly suited for robust components

Advantages:

  • Good mechanical properties
  • High strength & toughness
  • Excellent sliding & wear behaviour

Polyamid (PA) 12 is an engineering plastic which is particularly striking because of its good mechanical properties. At the same time, PA 12 offers high strength and toughness as well as excellent sliding and wear behaviour. These properties make this plastic a particularly good material for robust components.

Note about material properties

Note: Please note that the listed values of the properties (e.g. tensile strength) refer to the properties of the material in an unprocessed state. Hoffmann AM can not guarantee the information below. In the printed state, the values may deviate from the specifications.

If a material in practice is pushed to the limits of the stated values, the component itself should be tested. If you have any questions, please do not hesitate to contact us.