GEO-Reinigungstechnik GmbH

Almost every cold processing is done with sorts of oil, grease, emulsion and stearate. Rests and fractions of these have a negative impact on the product quality. Therefore, a high quality final product requires cleaning before the subsequent processing.

Ultrasonic cleaning is a highly efficient cleaning method for cleaning long products that achieves excellent surface quality even at high throughput speeds. The method is based on the effect of cavitation concentrated in a tank or pipe flooded with cleaning fluid.

In its high-performance ultrasonic systems, GEO uses specificaly for industrial inline  profile cleaning optimized and patented ultrasonic modules, which are unmatched in terms of the power density achieved. The resulting intense cavitation field results in a very effective cleaning of wires, profiles, strands, tapes and other endless materials.

Compared to conventional solutions, the short design of the modules with simultaneous high power input allows an individual and space-saving design of the system concept.

Cleaning with high pressure is particularly suitable at moderate line speeds and light surface dirt. Moreover, the method represents a space-saving and cost-effective systems engineering. 

The core of GEO‘s high pressure cleaning systems constitutes a compact high pressure nozzle especially designed for wire and tube applications. The nozzle type HDD ejects hot water via equal-spaced tapered bores at high speed onto the surface of the wire against the direction motion of the material. The resulting pressure creates high pressure forces on the surface, effectively removing soap, grease, oil and emulsion residues inline. Special additives that dissolve the surface tension or adhesion increase the effectiveness of the process.

Similar to our high performance ultrasonic equipment, the material to be purified passes through different sections.

The ready-to-operate systems are usually equipped with heated tanks and bag filters. The system performance can be modified by the number and type of nozzles and additional features like the pre-soaking bath, steam nozzles and air wipes.

By combining ultrasonic and / or high pressure cleaning with blasting the surface with superheated steam, in certain applications the performance of aqueous cleaning systems can be further optimized with regard to the surface purity to be achieved. Thanks to compact, aerodynamically optimized jet nozzles in the process zone, systems with small dimensions can be realized.
The steam generated in an electric steam generator can be additionally heated to temperatures of 200-250 ° C and flows with a pressure of 6 bar and a temperature of 150-200 ° C from the radiation nozzles on the wire or profile surface.

Oily residual contaminants are reliably removed by the high temperature and kinetic energy of the steam jet. At the same time, the dry, superheated steam with its high heat transfer ensures rapid drying of water-wetted surfaces.

When cleaning copper flat wire for photovoltaic (PV-Ribbon) after rolling at a line speed of up to 1000 m/min, residual carbon contents of less than 0.002 mg/cm² could be achieved by a perfectly to the process matched combination of ultrasound, high pressure and steam.