Beiplast Beiplast
Projects
- Rail body – 4 seats

Rail body – 4 seats

CASE STUDY

The interesting case presented at this page regards a rail body: it’s a very important automotive component, that is applied to gas powered engines. Inside this part the fuel gets pushed under pressure, reaching the combustion chambers, that the gas can access passing through specific valves which are directly assembled on the plastic part.
The version in object is for 4-cylinder engines.

Product criticities

  • The product presents complex geometries, with strict requirements about geometric and dimensional stability.
  • The object must be hydrocarbon-resistant, and it will also withstand high temperatures during its normal functioning conditions.
  • Hydraulic tightness is required, up to the pressure value specified by the customer.
  • Forecasts indicate very high production volumes: the mould must be capable of producing in a reliable way, without causing any machine downtime.

Solutions

  • The most suitable material for this application is a particular type of tecnopolymer, presenting a great resistance to high temperatures and to contact with chemicals. Its volume shrinkage rate is very low, and this allows to almost completely eliminate the typical distortions involved in the injection moulding process.
  • Hydraulic tightness on valve seats is guaranteed by a diamond finished surface. In addition, our quality control periodically checks the product to ensure the absence of flashes. Injection parameter have been set to optimize product appearance.
  • The mould is built with hardened steel: this reduces the erosion caused by the flowing of molten plastic, thus maximizing tool service life.
RESULT

Thanks to the knowledge that we were able to spend on this case, we are now able of producing one of the most complex objects from the technical point of view, with excellent results concerning product quality.
Machine downtimes are minimized, thanks to the mould robustness and thanks to the use of high-quality materials.