Abrasive cleaning
Abrasive cleaning is the most effective way to prepare surfaces before painting, electroplating, welding, or subsequent machining. It allows rust, heat-treatment scale, cutting marks, residues of molding compounds, or old coatings to be removed quickly and efficiently.
At KARBAZ LLC, we use various abrasive treatment methods, which makes it possible to work with a wide range of parts — from large steel blanks to small precision elements made of aluminum or stainless steel. This helps reduce the time required for preparatory operations, achieve consistent quality in batches of any volume, and avoid manual cleaning. Our technologies allow us not only to clean but also to form the surface — from rough scale removal to uniform matting or micro-polishing.
Certain abrasive treatment methods are also in demand when preparing surfaces before some types of chemical heat treatment, such as nitriding. They make it possible to obtain the required microrelief and ensure the cleanliness of the base, which has a positive effect on the stability of diffusion saturation processes in alloys. In addition, abrasive cleaning is indispensable as a finishing stage after heat treatment for the rapid removal of the scale that has formed.
The combination of modern equipment and our experience ensures that every part has a uniform surface after cleaning and is suitable for further technological processes without additional finishing. Each part leaves the workshop with a uniform microrelief, fully ready for the next technological stage.
Shot-Blasting Machines
Konrad Rump 13-E/V1
The largest shot-blasting machine in western Ukraine — Konrad Rump 13-E/V1 — is equipment that opens up an entirely new level of capabilities for customers. It is designed for work with massive assemblies and complex parts where other methods are too slow or do not provide the required quality. In fact, the launch of this German machine at our site in Starokostiantyniv covers the needs of the entire central and western regions of the country for high-quality cleaning of large castings and welded metal structures.
The machine is equipped with a 1-ton hoist, but this does not limit the weight of the products: if a part is heavier, it can be brought inside without suspension. The working chamber allows blanks up to 3 m high and up to 2.2 m wide and deep to be loaded. This means we can accept both large-sized products and smaller parts — the efficiency and quality of processing remain unchanged.
This machine cleans cast, forged, and welded structures equally well, as well as parts after gas, plasma, or laser cutting, blanks after heat treatment, and elements made of aluminum, stainless steel, or non-ferrous alloys. Powerful turbines make it possible to quickly remove thick layers of scale, slag, and oxides. At the same time, adjustable intensity allows operation in both aggressive and delicate modes — with materials where precision and geometry preservation are important.
Another unique feature of this machine is that it can perform not only cleaning but also strengthening treatment (shot peening). Shot bombardment creates controlled compressive stresses in the surface layer, significantly increasing the fatigue strength of parts under cyclic loads. The customer receives not just clean metal, but an extended service life of the product.
- quickly clean large batches of parts where manual cleaning would take too much time;
- work with heavy products that can be brought into the chamber without being suspended on the hoist;
- ensure equally high-quality processing of both large assemblies and the smallest parts;
- perform surface-forming treatment that is optimal for painting, electroplating, welding, or machining;
- perform strengthening treatment (shot peening), which increases fatigue strength and extends the service life of products.
Konrad Rump 13-E/V1
The unit allows for:
quickly cleaning large batches of parts, where manual cleaning would take too much time;
working with heavy items that can be moved into the chamber without being suspended on the hoist;
ensuring equally high-quality processing of both large assemblies and the smallest parts;
performing surface shaping for optimal results in painting, galvanizing, welding, or machining;
performing strengthening treatment (shot peening), which increases fatigue strength and extends the service life of products.
The process is completely enclosed: the abrasive circulates in a closed loop, and dust is removed by an aspiration system. This makes cleaning safe, environmentally friendly, and controlled, while the customer receives products with a uniform surface, ready for further use without additional operations.
For shot blasting, we use both carbon steel and stainless steel shot. The type of abrasive is selected depending on the material of the parts: steel shot is used for carbon steels, while stainless shot is used for stainless and non-ferrous alloys to avoid foreign inclusions and subsequent corrosion.
We work with different shot fractions — from 0.1 to 1 mm:
- Coarse fractions are used to quickly knock off thick layers of scale, welding slag, or burn-on after casting.
- Fine fractions provide delicate cleaning, uniform matting, and controlled roughness.
This approach makes it possible to obtain a surface with specified Ra/Rz parameters and prepare parts precisely for the required technological process: painting, electroplating, or subsequent machining.
RÖSLER RMBC
The RÖSLER RMBC belt shot-blasting machine is an ideal solution for serial batches where speed, repeatability, and cost efficiency are important to the customer. The 400 × 560 mm working chamber is equipped with a special conveyor belt that continuously tumbles the products. As a result, the surface of each part is processed uniformly, without blind spots or quality variations.
The cycle lasts only 5–15 minutes, after which the batch of parts is ready for further use — painting, welding, or machining. This means that even large orders can be completed quickly without any loss of quality.
RÖSLER RMBC is easy to integrate into serial production: automatic loading and unloading reduce the time spent on preparatory operations, while the closed cycle of abrasive recirculation and dust aspiration keeps the process clean and cost-efficient.
You receive a stable result in every cycle and significant savings compared with manual cleaning.
Where Abrasive Cleaning Is Used: Targeted B2B Solutions
The capabilities of our equipment allow us to solve complex technological tasks in mechanical engineering, food production, medical, and pharmaceutical industries, where surface quality requirements are especially high.
Processing Stainless Steel Parts
KARBAZ LLC performs both delicate and intensive abrasive treatment of stainless steel for critical assemblies and mechanisms. We work with the most common austenitic, martensitic, and heat-resistant steel grades, including AISI 304, AISI 316, AISI 321, 12Х18Н10Т, 20Х13, and other high-demand alloys.
Depending on the geometry of the products and the batch size, the optimal method is selected: wheel blasting, shot blasting, or glass bead blasting. Our technologies effectively remove:
- complex oxide films and heat tint colors;
- traces of high-temperature heat treatment;
- slag and build-up after welding, laser cutting, or plasma cutting;
- surface defects after machining.
For serial batches of both small parts and large structures, wheel-blasting technology using special steel or stainless steel shot is the optimal solution. Depending on the tasks set, the method allows the surface to be prepared for subsequent passivation and polishing or provides a uniform matte texture that meets technical requirements.
Preparation of Equipment for the Food Industry
KARBAZ LLC’s abrasive technologies are actively used in the production, overhaul, and restoration of technological lines for the food industry. We clean components made of food-grade stainless steel: tanks, storage vessels, industrial mixers, augers, pipeline elements, and conveyor system parts.
Our capacities are adapted to the requirements of plants in various sectors:
- Dairy industry: cleaning of pasteurizers, cheese-making vats, and pumping equipment.
- Brewing and beverage production: processing of fermentation tanks, lauter tuns, and syrup boilers.
- Processing lines: finishing of assemblies that come into contact with raw materials.
For parts made of food-grade stainless steel, it is important to ensure high-quality removal of scale and oxidation products while maintaining the specified microrelief parameters. The technological mode is selected individually for each assembly, taking into account the steel grade, the initial surface condition, and the requirements for further operation.
Cleaning and Matte Profiling of Aluminum Before Anodizing
KARBAZ engineers have adapted finishing preparation technologies for parts made of the most widely used aluminum alloys: D16, AMg5, AMg6, and AD31. The method is effective for processing products after turning and milling operations or casting.
Matte treatment of aluminum in our workshops solves several tasks at once:
- removes technological contamination, oxides, and traces of cutting fluids;
- levels out small scratches, cutter marks, and traces of mold release defects;
- creates micro-roughness with a highly developed surface area.
Such preparation is a mandatory stage before decorative or hard anodizing, as well as before the application of powder and paint coatings. It ensures uniformity of the finishing layer and reduces the risk of coating defects and color unevenness.
Glass bead blasting
Glass bead blasting of metal is a delicate technology performed using microscopic glass beads in a stream of compressed air.
Vibratory Finishing
Vibratory finishing of metal parts is a modern finishing method that allows a large number of products to be cleaned, polished, and deburred at the same time. During the process, the parts are placed in a medium with abrasive media and special solutions, where they are uniformly processed under the action of vibration.
Classic Sandblasting and Hydro-Abrasive Treatment
Sandblasting of metal is a classic technology that has been used for decades to prepare surfaces. A powerful stream of abrasive under pressure makes it possible to effectively remove rust, scale after heat treatment, old paint, slag, and other contaminants.
The method is universal and suitable for processing a wide range of products: from cast and forged parts to welded products and metal structures. Thanks to its simplicity and reliability, sandblasting remains one of the most popular cleaning methods, ensuring a clean and uniform surface.
At KARBAZ LLC, we perform sandblasting of individual parts and small batches of products.
Inter-Operation Micro-Polishing in Carbo-Oxidizing Processes
In our carbo-oxidizing technology (liquid carbonitriding), shot blasting plays an important intermediate role. After the surface saturation stage, we perform micro-polishing with ultra-fine fractions of stainless steel shot (0.1–0.3 mm). This approach helps ensure process cleanliness: it prevents the transfer of foreign inclusions and minimizes the risk of future corrosion centers.
The purpose of this operation is to create a uniform base for final oxidation. We correct roughness peaks and level the microrelief, forming a surface that ensures uniform coating color, high adhesion, and operational durability of the parts.
Why choose us
Abrasive cleaning at KARBAZ LLC is not a separate operation but a comprehensive service that allows the customer to save time, reduce costs, and obtain a consistently high-quality result. We offer solutions for any task: from massive steel blanks after heat treatment to serial batches of small aluminum or stainless steel parts.
Thanks to modern German machines and various processing technologies, we can guarantee customers what matters most to them: parts are returned quickly, with predictable quality, ready for further use in production or assembly.