Siempelkamp expands range with ring-rolling mills

The first ring-rolling mill designed and built by Siempelkamp has passed its crucial test at its initial startup at the Krefeld plant. In July, Siempelkamp manufactured the first rings made of steel with the rolling mill which will be delivered to the Russian JSC Metallurgical Plant Electrostal shortly.

The ring rolling mill with maximum radial and axial pressing forces of 6,300 kN each enables the precise manufacturing of rings with an external diameter of up to 2,500 mm and a height of up to 600 mm.

Siempelkamp not only completely manufactured the rolling mill at the Krefeld location but also assembled and started it up there as well as extensively tested the hot rolling process.The startup in Krefeld has proven that the plant not only meets the customer's desired specifications but even exceeds them in some areas. The ring-rolling mill is forecasted to be installed in Russia at the end of the year and will start operation in 2014.

The first Siempelkamp plant of this type manufactures rings made of steel and special materials such as nickel-based, titanium and aluminum alloys. The rings with rectangular or profiled cross-sections made of these extremely rigid yet lightweight special materials are mainly used as mechanically and thermally stressed components in the aerospace industry.

With the ring rolling mill, Siempelkamp once again demonstrates its competence as a systems supplier and provider of complete solutions which designs and builds presses for all stages of metal forming.  

This ring-rolling mill is the second plant which Siempelkamp supplies to the Russian customer JSC Metallurgical Plant Electrostal: The company also operates a 20,000-ton precision closed-die forging press made by Siempelkamp which, among other products, provides the feedstock for the ring rolling mill. JSC Metallurgical Plant Electrostal carries out the entire production process of rings made of high-alloyed steel in its own plant and thus raises the depth of value added to its own production.

With a variety of design details, Siempelkamp achieves exceptionally high precision during ring rolling. For example, the diameter of the rings during ring rolling is precisely measured via laser measurement systems. High process accuracy is also guaranteed by the SicNike Magista Obra