The "GEORG" machine cuts machining times at Doosan Skoda Power by 50 percent

Integrated measuring systems dramatically reduce set-up and idle times. ...

On February 28, Doosan Skoda Power officially inaugurated the new ultraturn MC horizontal machining center supplied by GEORG at its Pilsen works in the Czech Republic. Doosan Skoda Power will use the new machine primarily for machining turbine rotors of up to 140 tons weight. This machining center is the third of its kind in the world to combine turning, drilling, milling, grinding and measuring of extremely large parts in one unit.

The new machine is designed to handle workpieces with diameters of up to 3,500 mm and lengths of up to 12,000 mm. It is the third ultraturn MC unit in operation worldwide. Siemens has been using a similar machine in Berlin since 2016 and another one, in operation in Russia, machines gas compressors.

In the past, the Pilsen works used to machine the turbine rotors in three steps - requiring three separate machines: first, all the rotors" bearing journals were turned, then the fir-tree blade slots were milled and, finally, the balancing holes and the coupling holes were drilled. In contrast, the new machine, which everyone at Doosan Skoda Power simply calls "GEORG", performs all these three process steps in one sequence, i.e. the work pieces do not have to be re-clamped or transferred in any way. What is more, the machining centers of the ultraturn MC series are the first of their kind in the world designed to measure extra large workpieces with highest precision directly in the machine.

450 hours of machining time saved

According to Jaroslav Milsimer, Director of turbine manufacturing at Doosan Skoda Power, the new machine has substantially strengthened the market position of the Pilsen works: "In the first place, ordering the new machine from GEORG was an investment in quality. Besides that, we are also saving a lot of machining time, namely 30 percent during turning and 50 percent during drilling and milling. The overall machining time for regular rotors has thus decreased from about 1,000 down to 550 hours. Thanks to the new machining center, we are now the internationally leading manufacturer of large turbine rotors."

Jan Ebener, Head of Sales machine tool division at GEORG, explains why the customer decided to invest in an ultraturn MC machine: "No one else in the world combines the processes of milling, turning, drilling and grinding for parts of truly gigantic dimensions as smartly within one unit as we do. Apart from that, we are the only ones to integrate a high-precision measurement system for such enormous workpieces in the same machine."

For universal use

Doosan Skoda Power intends to use the new machining center mainly for the manufacture of turbine rotors. Nevertheless, the machine has been designed for universal use. Milsimer sees new markets opening up for his company: "The new facility enables us to also produce rotors for generators, rolls for the paper industry, large-diameter drive shafts and even crankshafts."

Dr. Wieland H. Klein, Managing Director of GEORG"s machine tool division, takes pride in the fact that a medium-sized business from the German Siegerland region has supplied a machine that will secure the future of Doosan Skoda Power"s production site in Pilsen: "The works will be able to react flexibly to changing conditions and remain competitive in the future because the GEORG machine can be easily adapted to changing requirements or even completely new ones. This will require nothing but minor modifications. New machining tools or new steady rests can be added without a hitch. Shortly, our customer will use the machine also for grinding.

Heinrich Georg GmbH Maschinenfabrik
Jan Ebener
Langenauer Straße 12
57223 Kreuztal / Germany
+49. 2732 779-338
+49. 2732 779-327

Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen / Germany

Contact Details

Company Name: VIP-Kommunikation
Issued By: Regina Reinhardt
Phone: +49.241.89468-24
Address: Dennewartstraße 25-27
City: Aachen / Germany
State: Nordrhein-Westfalen
Zip: 52068
Country: Germany
Website: Visit the website

Keywords : Goerg, Doosan Skoda, machining turbine rotors, ultraturn MC, large-diameter drive shaft, crankshaft, grinding, turbine rotor,

by Regina Reinhardt (few months ago!)

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