Standard Manual Blast Cabinets

The standard sizes of manual blast cabinets range in sizes 70, 90, 120, 150, and 200 cm, both in pressure and in injector versions. If required it is possible to attach a removable hopper which allows fast alternation of both systems. These devices are designed so that they meet all the request of our client. Special attention is always paid to operator´s comfort, fast cleaning, and productivity. According to your needs, the cabinets may be equipped with number of accessories increasing their efficiency, such as: telescopic nozzle holder, turntable, draw-through openings in side doors, top opening view window, etc. . Click on supplementary equipment and accessories to see more.

In case it is essential to avoid iron contamination of noble metal workpieces during the process of surface treatment, we are able to provide you with a device made of stainless steel.

Practically any abrasive medium acan be used for these machines; furthermore, they are designed for the possibility of frequent changes of abrasive material. Our solution of blast cabinet interior allows easy cleaning, which is very important e. g. for glass bead blasting. The top window on the cabinet is made of a double layer glass with the inner one easily replaceable.

Designing these manual blast cabinets, we prefer side-door insertion as it eliminates the overall dustiness of the machine.

Larger cabinets of size 150 and 200 cm are equipped with two sections for easier blasting of longer components.

Cabinets are treated with quality and durable surface layer by powder coatings. Based on a wish we can provide our clients with various colour versions. The inside is lined with rubber in order to increase service life of the machine and simultaneously to lower the noise during the blasting proces.

In case a standard blast cabinet with supplementary equipment still does not meet your requirements, we will help you to find an individual solution.. Click on special manual blast cabinets to see some examples. .

Designing these manual blast cabinets, we prefer side-door insertion as it eliminates the overall dustiness of the machine.

Blast Media

The choice of the right abrasive is a fundamental part of the whole process. Its choice depends on the type of procedure: whether it is a step before final coat painting, metalizing, electrogalvanization, final aesthetic treatment, or whether it is a cleaning causing no damage to the surface of a treated workpiece.

Blast media are categorized into groups according to various viewpoints: metallic / non-metallic, sharp-edged /spherical, hard / soft. Each type has its own applicability and is supplied in different granularity. Reaching the best quality results depends apart from the type and size of blast medium also on the device parameters, nozzle distance, pressure, etc.

An Overview of the Most Frequently Used Blast Media

Steel Grit

Steel grit is one of the most common materials used in closed cycled blasting machines: blast cabinets and spray booths. It is suitable especially for pressure blast machines and is used for blasting of iron materials, rust and dross removal, for pre-treatment of powder coating, painting, and electroforming. Steel grit is a highly efficient and cost-effective material.

Cut Wire Shot

Cut wire shot is sometimes being used instead of steel grit. However, steel grit is of higher efficiency.

Cut wire shot is also available from non-ferrous materials such as brass, zinc, or stainless steel.

Cast Steel Shot

Cast steel shot is used similarly as steel grit is in mechanical blasters with wheel blast units.

In pneumatic cabinets, this abrasive serves for shot peening – hardening process of stressed components, which thickens a component layer and increases its service life (cogwheels, shafts, springs, etc.).

Corundum (Aluminium Oxide)

Corundum is typically utilized for sharp-edged blasting of non-ferrous metals where it is essential to avoid iron contamination of the surface. In other words, aluminium oxide is suitable for stainless steel, aluminium, brass, and galvanized iron. There are several advantages of corundum use: first, it is its high cleaning efficiency as it fissions during the blast process and so always creates sharp edges; second, it is its supply in a wide range of granularity and in combination with injector blast system it enables perfect regulation of final surface treatment (as a result even blasting of very thin sheet metal is possible).

Corundum works as a pre-treatment stage or as a first stage of glass bead blasting.

It can be supplied in two versions: white or brown.

Garnet

What has been said about corundum can be basically applied to garnet as well. Nevertheless, garnet, unlike synthetic corundum, is a natural product and as such is supplied in lower number of granularity. On the bright side, the costs are also usually lower.

Glass Bead Blasting Media

Glass beads for blasting of non-ferrous metals are used either as a final treatment (usually stainless steel) or as a pre-treatment for anodic oxidation of aluminium surface or galvanization. The surface gains elegant satin look which also lowers visibility of any potential damage.

The best results are reached in a so called two-stage process. Firstly, the surface is cleaned and unified by sharp-edged abrasives (corundum or garnet); secondly, the gleam is once again restored by glass blasting beads. These are supplied in number of granularity and by a combination of first and second stage size of the material and appropriate pressure it is possible to a great extent control the final appearance of a product.

Click on Glass Bead Blasting for more information and photos of glass blasting beads application.

Ceramic Shot Beads

Ceramic shot beads are of similar use as glass beads. However, thanks to their hardness they have better lifespan and as such can be used even for treatment of very hard stainless steel. They are supplied in a large scale of granularity.

Walnut Shell Blast Media

Ground walnut shells are used for cleaning of workpieces whose surface must not be damaged or hardened. They are supplied in a large scale of granularity.

Plastic Beads

Plastic beads are synthetic product with similar employment as walnut shell blast media. It is again supplied in a wide range of granularity.

Silica Sand Blasting

Historically oldest blast medium, it was used especially in mobile sand blasting for its low costs and similar effect to corundum. Nevertheless, nowadays this abrasive media is not being used, except for rare exceptions; its use is not recommended and in many countries actually forbidden. The reason is that it is the only blast media which causes an illness, silicosis. Such a danger does not occur with any other blast media.

Blast Furnace Slag

Blast furnace slag nowadays substitutes silica sand in mobile sand blasting.

For special purposes other materials such as stainless beads, aluminium or zinc cut wire shot, or brass grit are also being used.