MECHANICAL CLEANING
Thorough cleaning
Mechanical cleaning comprises a set of technological processes for removing surface contaminants, old coatings and other undesirable substances through mechanical action. This process is fundamental to the preparation of surfaces prior to subsequent operations such as painting, welding, machining or the application of protective coatings. Mechanical cleaning comprises a set of technological processes for removing surface contaminants, old coatings and other undesirable substances through mechanical action. This process is fundamental to the preparation of surfaces prior to subsequent operations such as painting, welding, machining or the application of protective coatings.
Objectives and principles of mechanical cleaning
The main purpose of mechanical cleaning is surface preparation for optimum coating adhesion, high-quality welding or precision machining. The process creates a clean, uniform surface with the appropriate microgeometry, ensuring maximum efficiency in subsequent operations.
The principle of abrasive action is based on the controlled removal of material from the surface through friction, impact or a combination of both mechanisms. The intensity of the action is regulated by the choice of abrasive material, the processing speed and the pressure applied.
Selective cleaning It allows only the unwanted substances to be removed without causing significant damage to the base material, which is particularly important when working with thin-walled structures or precision components.
Key methods and technologies
Sandblasting is the most widely used method of mechanical cleaning, utilising abrasive particles propelled at high pressure towards the surface being treated. The various types of abrasive materials – quartz sand, corundum, glass beads, steel particles – provide specific effects depending on the requirements of the application.
Brushing It uses rotating brushes with bristles of varying stiffness – from soft nylon to steel wires. This method is suitable for delicate surfaces and for spot cleaning in hard-to-reach areas. Disc and tape brushes ensure that large surfaces are treated evenly.
Grinding It uses abrasive discs, belts or stones to remove surface defects and create smooth surfaces with a controlled degree of roughness. This method is indispensable for the finishing of weld seams and the removal of scale.
Specialized technologies
Water jetting използва вода под високо налягане за почистване без използване на абразивни материали. Този екологично чист метод е ефективен при премахване на боя, ръжда и други покрития, особено в затворени пространства или при работа с чувствителни материали.
Cryogenic cleaning Using CO₂ ice or liquid nitrogen ensures gentle removal of contaminants without leaving any residue from the cleaning agent. This method is particularly valuable when cleaning electronic components and precision mechanisms.
Ultrasonic cleaning It uses high-frequency vibrations in a cleaning solution to remove microscopic contaminants from complex geometries. This method is indispensable for cleaning hydraulic components, filters and precision parts.
Laser cleaning represents state-of-the-art technology that uses a focused laser beam to selectively remove coatings and contaminants without affecting the base material.
Selection of abrasive materials
Metal abrasives (steel granules, cast iron particles) are effective for heavy-duty cleaning operations and create an aggressive surface profile. Mineral abrasives such as corundum and garnet, which offer good performance with moderate abrasiveness.
Synthetic materials These include plastic media for gentle cleaning and specialised ceramic abrasives for high-performance applications. Biodegradable abrasives Made from plant-based materials, they are used in environmentally sensitive projects.
Quality control and standards
The quality of mechanical cleaning is assessed in accordance with international standards such as ISO 8501 for the visual assessment of cleaned steel surfaces. Levels of cleaning range from St2 (basic cleaning) to St3 (complete cleaning to a metallic sheen).
Measuring the surface profile The use of profilometers provides a quantitative assessment of the surface roughness achieved. Control of dust and residues ensures that the surface is ready for subsequent operations.
Safety and environmental considerations
Mechanical cleaning requires strict adherence to safety measures due to the generation of dust, noise and waste materials. Dust collection systems and personal protective equipment are mandatory to protect operators.
The recycling of abrasive materials and proper waste management are key to the sustainable development of the technology. Current trends are moving towards closed-loop systems and the recovery of valuable materials.
Mechanical cleaning remains an indispensable technology in modern manufacturing, constantly evolving through the use of new materials, automated processes and environmentally friendly solutions.
SERVICES
PAINTING
LEARN MORE
WELDING
LEARN MORE
DESIGNING
LEARN MORE
FORMING - BENDING
LEARN MORE
CUTTING BY HEATING
LEARN MORE
MECHANICAL CUTTING
LEARN MORE
MECHANICAL CLEANING
LEARN MORE
MECHANICAL PROCESSING OF PARTS
LEARN MORE
URBAN ENVIRONMENT AND PARK EQUIPMENT
LEARN MORE
Security
Throughout the process
The re-equipment of the company with new, modern CNC-machines led to the formation of a specialized team of CAM-engineers who know and apply the latest technical solutions in the field of machining. Together with the engineers focused on special production processes, they provide a solid foundation for the rapid and efficient absorption of new projects.
