Metal impregnation plants

Our systems can be adapted to suit any resin type. This includes resins that are heavier or lighter than water, or recyclable resin. We have the right system concept for you, whether the parts are porous cast, sintered or plastic parts, or whether you wish to seal bonded parts.

Our systems come with the following equipment as standard:

Impregnation station

In all system types, the impregnation process is performed in a vacuum. The parts are first evacuated until dry so that any adherent residual moisture is removed along with air from the pores. The parts are then flooded with resin and the vessel is aerated after a rest period. This process ensures that the resin completely seals the pores.
There is an option for an overpressure stage to be applied downstream, or for the parts to be spun in the impregnation vessel.

Dripping station

The parts are held here so that as much excess resin as possible can be separated and fed back into the impregnation process.

The following processes are available:

• Dripping with stationary part
• Dripping with rotating device to empty all scooping points
• Dripping with spinning to remove resin by centrifugal force
• Dripping in combination with rotation and spinning to ensure optimal removal of resin from the component

Washing station

The surfaces are cleaned to remove resin and particles in order to achieve optimal surfaces following curing.

The following processes are available:

• Washing by manual dipping and moving the racks through the water bath, and subsequent dripping while remaining in the handling unit above the water bath.
• Washing with a lifting device through vertical upwards and downwards movement of the racks in the water bath, and subsequent dripping above the bath.
• Washing with a rotating device in the water bath or half-flooded, and subsequent dripping above the bath.
• Washing with splash water and rotating device, half-flooded or above the water bath to achieve optimal resin- and particle-free surfaces after curing.

Filtering devices for cleaning the water or a recycling station for recyclable resin can be integrated as an option.

To achieve even better results, a second washing container can be integrated.

Curing station:

The parts are cured in the water bath at approx. 90°C. As there is a high energy density in the water and the medium surrounds the components, rapid and homogeneous heating of the components to the curing temperature is achieved.

The following processes are available:

• Curing by dipping the racks into the water bath, and subsequent dripping while remaining in the handling unit above the water bath
• Curing with splash water and rotating device, half-flooded or above the water bath to achieve optimal resin- and particle-free surfaces after curing.

Curing in a water bath with combined lifting-spinning device to support the curing process through rotation and subsequent dripping by spinning above the water bath.

A filtering device for cleaning the water can be integrated as an option.

Drying station

If you have an upstream washing process and the parts are not completely dry, or if your components must be completely dry following impregnation so that they can immediately undergo further processing, then we can integrate a vacuum dryer into the system before the impregnation station or after the curing station.

The following processes are available:

• Vacuum drying: In the vacuum drying process, the water is vaporised by lowering the pressure, thus enabling a rapid drying process that conserves energy.
• Alternating drying: If the energy content of the parts is not sufficient for vacuum drying, the parts are alternately heated in the convection process and dried in a vacuum. If necessary, this process is completed in several alternating intervals.