Surface preparation and cleaning

We perform standard abrasive blasting with compressed air with all types of available blasting media such as silica sand, soda ash, corundum, slag, Australian garnet, metal grit with the possibility of recycling and reuse. We have extensive experience in preparing metal or concrete surfaces to a defined cleanliness and roughness using conventional abrasive blasting both in a workshop environment and at the client’s site.

We perform abrasive blasting with compressed air and a water screen to reduce the overall dustiness of the process. Water screen blasting has proven itself for the preparation of concrete surfaces in particular. We have practical experience in the preparation of metal or concrete surfaces to a defined cleanliness and roughness using the blasting method with the use of a water screen on many projects at home and abroad in environments where dust reduction is a priority for operational or environmental reasons.

We perform ultra-high pressure water jet blasting (UHPWJ) with Falch® technology, with pressures up to 3,000 bar. This technology is a proven method of cleaning or blasting metal and concrete surfaces to a defined cleanliness. Falch® technology is used in a wide range of surface preparation or cleaning applications thanks to sophisticated robotic attachments. The ultra-high-pressure water jet can also effectively remove existing non-functional coatings and coatings of very high thicknesses. CORROTECH ENGINEERING s.r.o. has applied the Falch® technology on many projects at home and abroad in environments where dust generation during surface preparation is unacceptable for operational reasons.

A revolutionary method in surface preparation is dust-free abrasive blasting with Sponge-Jet™ technology. Sponge-Jet™ technology holds the world leadership in clean, dry, low-dust abrasive blasting with reusable media. This method of surface preparation reduces up to 90% of dust escaping into the surrounding air. This fact, the safety of the work itself and the efficiency of cleaning make it a sought after method across all industrial and commercial sectors in a wide range of possible applications. CORROTECH ENGINEERING s.r.o. uses Sponge-Jet™ technology for example in corrosion protection applications, especially in the nuclear power industry, where the formation of high dust escaping into the surrounding air during surface preparation is unacceptable for operational reasons.

Another revolutionary method in surface preparation is hand-held, mechanized, abrasive-free blasting with Bristle Blaster® technology. Bristle Blaster® uses a specially designed rotary bristle tool to remove corrosion and create an anchoring profile. The bristle tips are designed to strike the corroded surface with kinetic energy equivalent to a standard blast media process. As a result, the treated surface has the texture and visual clarity of a traditional blasting process. CORROTECH ENGINEERING s.r.o. offers Bristle Blaster® technology especially for applications where surface preparation by conventional abrasive blasting and compressed air is impractical.

An integral part of the surface preparation for the application of coatings is its washing with high-pressure water with the addition of suitable detergents to remove grease or water-soluble salts. Surface grease and salt contamination are not removed by abrasive blasting alone, but are instead distributed over the entire surface area. This type of contamination then has a disastrous effect on the service life of the applied corrosion protection. Professional surface washing is carried out according to a precisely defined methodology using low-conductivity water or demineralised water at temperatures between 40°C and 120°C with a pressure of 120 – 200 bar. CORROTECH ENGINEERING s.r.o. specifies surface washing with high-pressure water with the addition of suitable detergents as an integral part of its technological procedures for surface preparation.