Contact T&C Privacy Policy Imprint   
THE COMPANY SERVICES PROCESS cirp NEWS 2

Selective Laser Sintering (SLS)

Laser sintering
Laser sintering

Sample parts and prototypes, which are verifiable in their geometrical form as well as in their functionality and show mechanical property, are manufactured using laser sintering. In the process a polyamide powder is fused in layers by a laser. The real model achieves a high dimensional and contouring accuracy with a general deviation of +/- 0,5%. For small components with a size of less than 15 mm, there is a general deviation of +/- 0.15%.

A very good surface condition can be achieved by reworking and varnishing the polyamide models. The laser sintering process is most suitable for the production of functional prototypes with snap-fits, integral hinge and clip connections for functional models, installation trials, design review and rapid manufacturing with lot sizes up to 250 pieces.

Laser sintering allows fast production of prototypes for far-reaching functional examinations. The mechanical and thermal properties comparatively enable the parts to endure extreme stress. The processing time is 3 to 5 work days.

SLS Systems
  EOS GmbH - EOS P 770
  Build size (X x Y x Z) 700 x 380 x 580 mm
  Number of systems: 1
  EOS GmbH - EOS P 760
  Build size (X x Y x Z) 700 x 380 x 580 mm
  Number of systems: 1
  EOS GmbH - EOS P 396
  Build size (X x Y x Z) 340 x 340 x 600 mm
  Number of systems: 1
  EOS GmbH - EOS P 395
  Build size (X x Y x Z) 340 x 340 x 600 mm
  Number of systems: 1
  EOS GmbH - Formiga P 100
  Build size (X x Y x Z) 200 x 250 x 330 mm
  Number of systems: 1
Procedural principle

The process uses a polyamide powder which is subjected to localised melting in layers using a laser beam.

Stereolithographie
Material data

  Standard materials such as fine polyamide comparable to PA 12 are being used in the EOSINT machines. They are
  available without glass filling as PA2200 or with glass filling as PA 3200GF. The polyamide PA 2200 is certificated as
  biocompatible.

  Alumide
  The aluminium-filled polyamide is characterized by its high stiffness, metallic look
  and good post processing possibilities.

  PA2200
  PA2200 is most suitable for fully functional components of design quality, which are
  exposed to high mechanical or thermal load.

  PA3200GF
  The fine, glass-filled polyamide has excellent mechanical properties, very smooth
  surfaces and a high accuracy. It is most suitable for casting parts and thermally
  stressed parts.

Mechanical characteristics
Stereolithographie
Stereolithographie
Under no circumstances can the published information about the material data be considered as express warranty or otherwise. The application of these information and references as well as the decision on the suitability of any product for special applications is in all cases subject to the sole responsibility of the user.
Surface technology and assembly

Our trained model makers support you with different surface finishes and assembly work in order to ensure that your prototype is as close as possible to the future series-produced piece. We define the level of detail in consultation with you.


Selektives Lasersintern Einfärben
  Polishing/top finish
  We can polish components to smoothness, gloss or high-gloss. SLA parts made from
  WaterShed® XC 11122 or Accura® ClearVue can be given a top finish in order to make
  them transparent.

  Infiltration
  Infiltration involves dipping pieces in transparent epoxy resin. Epoxy infiltration provides air
  and water-tight sealing that can withstand high temperatures or chemicals. No material is
  deposited as part of the infiltration process, which means that it does not interfere with
  colouring.

  Colouring
  cirp now offers a wide range of colours. The components are fully coloured up to a depth
  of around 0.3 mm. The colours are resistant to UV rays, water and abrasion. No material is
  deposited as it would be in the case of painting or metal coating.

  Painting
  The SLA parts can be painted in any RAL colour. Special paint applications are also
  possible.

  Metal coating
  Galvanic coating or aluminisation are used to achieve results that range from chrome-like
  to high-gloss. The substrate also ensures outstanding thermal and electrical conducting
  properties.

  Fitting of threaded
  inserts

  Various threaded inserts may be fitted into the laser-sintered piece should you wish.

  Assembly
  If necessary, the cirp team will also help you put together your component assemblies.
  This also includes the assembly of individual electronic components and purchased parts.