TPT July 2010

T echnology U pdate

Efficient blast cleaning of different size steel pipes

Besides blast performance and a robust machine construction, the maintenance- friendly design of the tube blaster was another factor that convinced Terex to buy the Rösler equipment. Very large inspection/ maintenance doors in the entrance and exit vestibules, as well as in the blast chamber, allow easy and ergonomic access to all areas requiring maintenance. Rösler Oberflächentechnik GmbH – Germany

important point was that Rösler was able to adapt the machine design to the Terex requirements by conducting processing trials in the Rösler test lab. The trials showed that the required degree of cleanliness, according to the Swedish Standard of SA 2.5 (‘near white’) surface conditions are achieved in the machinewith travel speeds from2 to 6.5m/min due to the two high performance Hurricane ® H42 blast wheels, which are driven by 22kW motors. The blast chamber itself is fabricated from wear resistant manganese steel. The precisely defined blast angle ensures that the required blast results are consistently achieved in the specified time, even with tubes with a relatively large diameter. Since the Terex specifications only call for the blast cleaning of the outer tube surface, the open tube ends are masked, However, Rösler also offers solutions for applications where blast cleaning of the inside and outside of the tubes is required.

��� ������� ������ Forming machines of butt-weld pipe fitting. Beveling machines for pipe fittings. Pipe end beveling machine for Prefabricated pipe plant. Pipe fittings for fire protection, petro-chemical &pulp industry, etc. Auto threading m/c for socket &nipple. Transfer machine & special purpose m/e. TEREX, a leading crane manufacturer, has purchased the new Rösler RDR 500 pipe blaster for its lattice boom crane production plant. At this location Terex produces lattice boom cranes with payloads of more than 300 tons, which can move under full load (‘pick & carry’). Products include the CC 8800-1 TWIN, which the company claims is the biggest and strongest crane in the world, able to lift 3,200 tons and still move under full load. An essential section of this type of crane is the lattice boom that is fabricated from steel tubes of different diameters and lengths. The new RDR 500 tube/pipe blaster allows Terex to de-scale and de-rust tubes with a length of up to 18,000mm and a diameter of up to 500mm prior to flame cutting. A major factor in choosing the RDR was that Rösler had already supplied a number of nearly identical tube blast systems to OEMs and steel trading companies. Another

Fax: +49 95 33 9 24 300 Email: info@rosler.com Website: www.rosler.com

Tubes are transferred into the shot blast machine

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J uly 2010

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