We develop and product single screws and twin-screw, their diameter ranges up to 132mm and their length to 3700mm . We only use material that imported from Germany or Japan once the geometry has been determined. The screws are produced by the following individual processes.
- The blanks are prepared and annealed.
- Modern CNC-lathers ensure a high degree of constant quality.
- Well-Proven special boring systems are used for producing the cooling channels.
- The screw geometry is milled out by computer numerical controlled machines.
- Before they undergo heat treatment, the work pieces are checked for warppage. Deviations are corrected immediately.
- The screw flights are polished by several stages, surface roughness below Ra 0.8 g m.
- An acceptance report is written out of each screw during final inspection.