Fast and cost effective finishing of aluminum die-castings

When it comes to high volume production of complex aluminum die-castings, Kovolis Hedvikov a.s. is a sought after partner by numerous car manufacturers and their suppliers. To expand its capacity and...More Information
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Process engineering


Deflashing machines

Turbine technology
Efficient deflashing requires extreme acceleration of the blast media. To achieve this, Rösler uses blast wheel technology. Blades mounted on the blast wheel capture and transport the blast media, using centrifugal force to swiftly propel the media. The blast wheels are characterized by their low energy consumption and high degree of coverage.



Nozzle technology
Blasting guns are used in applications requiring an intense, focused deflashing, or where a minimum quantity of blast media is sufficient. Used in combination with blast wheels, blast guns are ideal for deflashing difficult to reach areas on the parts (such as holes).

Cascade separator with cyclone
Cascade separator with cyclone

Four-stage processing of the blast media

The entire volume of blast media circulates in a closed loop. In the first step, air, dust and fine particles are suctioned from the blasting chamber. In the second step, a vacuum causes the consumed blast media, burrs and fibers to fall onto the multi-stage screening unit. Here, the debris is filtered from the blast media in circulation. In step three, the residual blast media moves to the cascade separator. A cascade separator is used to ensure a consistently high quality of blast media. Spent blast media and any residual debris are removed from circulation here, and the resulting clean blast media moves on the blast media’s replenishment hopper. In step four, an optional sensor automatically handles replenishment of the blast media and ensures that the spent blast media is continuously replaced by new to ensure that an adequate amount is in circulation.

Workpiece cleaning and dust extraction

Cleaning and quality of the workpieces
The cleaning and blow-off of the parts occurs after the processing and is specially configured for that type of part. To prevent statically charged dust deposits from adhering to the parts and being difficult to remove, every machine is equipped with a anti-static fluid spray system. The anti-static fluid, held in a supply reservoir, is emitted through a nozzle. Although the water/anti-static fluid can be manually mixed, an automatic metering unit is also available. The mix ratio can be set using the control panel.

Air extraction from the blasting zone
Dust-laden air is suctioned from the blasting chambers, using the method corresponding to that process. This action transports the reusable blast media back into the loop (see also Blast Media Recovery).

Air filtration
The air filtration system uses specially designed, highly effective filter cartridges. These are automatically cleaned at regular intervals during normal operations, thereby ensuring 24x7 continuous operations.

Blow-off of the workpieces using a compressed air blowerAnti-static equipment

Operational safety and ease of use

Control console
To ensure the utmost operational safety, we configure the controls as follows:

  • Electronic controls with safety monitors
  • Operational status and easy to understand error messages
  • Designed for simple installation using plug-in connections that link the control console to the machine
  • Emergency-stop button is an easily accessible location
  • Compliance with all relevant CE standards


Contact to Rösler Switzerland

International Sales
Rösler Schweiz AG
Staffelbachstrasse 189
Postfach 81
CH-5054 Kirchleerau / Schweiz

Tel: +41 (0) 62 738 55 10
Fax:+41 (0) 62 738 55 80
Opens window for sending emailrosler-ch@rosler.com

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