The shell makes the difference

Competence Leadership

Due to decades of experience with the shell mould casting process we rank among today’s leading European suppliers. A characteristic feature of this technique is the fact that the material is not cast in block moulds but in thin resin-bonded sand shells.

Shell mould process

Technical background:

This technique uses metal casting patterns manufactured on the basis of 3D-CAD data. The patterns are mounted on plates together with the casting system. In the moulding machine the pattern plates are heated to approx. 220°C, then artificial resin-coated quartz sand is poured on them. Due to the thermal influence, the sand is hardened. By controlling time and temperature, two mould halves with a minimal and thus very economic wall thickness are generated, hence the name “shell”.

Precision without limitation

The technique with the "shell" assures constantly high quality standards:

  • Excellent surface quality

Average surface roughness Rz 100-150 µm according to DIN 4766.

  • High dimensional accuracy

Mould cone of 0.5 ° is possible, dimensional variation tolerance of the casting in the dimension of the tolerance range  DCTG 9 acc. to ISO 8062-3.

  • Low machining overmeasure

Machining efforts are reduced respectively completely eliminated which saves time and money.

  • Practically unlimited service life of the patterns

Using steel for the patterns assures the stability of the models.

  • Perfect reproducibility

Due to the stability of the steel patterns each casting is equal to the others. 

Downloads

We use cookies in order to improve our service. You can obtain more detailed information on cookies and disabling them in our privacy policy. more