Siempelkamp is updating the water-hydraulics for this 100-MN press at Stupino Metallurgical Co., part of a broader project involving new electric controls and die heating technology, and a second hydraulics package for a closed-die press conversion.

New Press Hydraulics...Better Forming Process Control

Aug. 1, 2012
SMK placed an order with Siempelkamp to modernize the water-hydraulic controls for a 100-MN forging press.

Stupino Metallurgical Co. (SMK) is a Moscow-based manufacturer of aluminum components and structures, including forgings and castings. Recently, SMK placed an order with Siempelkamp to modernize the water-hydraulic controls for a 100-MN SMS forging press, as well as a new die heating system. SMK also asked Siempelkamp ( to develop the water-hydraulic controls for a 46-MN closed-die forging press being converted into an open-die forging operation.

The water-hydraulic control specially developed for the 100-MN press makes it possible to position the crossbeam with more precision, by up to 0.15 mm/sec, according to the contractor. Also, parallel control of the moving crossbeam is supported under all conditions of operation. The Siempelkamp system is specially programmed for the production speed and pressure profiles of individual products. During forging, a detailed report of the process values achieved is provided.

Also included in the modernization package of the 100-MN press are the electric controls and a die heating system. The latter is fully integrated into the press control, keeping the die at a constant temperature of 900°C during the forging pause.

For the project of converting the 46-MN press, Siempelkamp will apply new water-hydraulic controls as well as electric controls. The open-die forging press will be capable of up to 60 strokes per minute. Two rail-bound manipulators with a rotary table will be integrated into the installation, too.

For both presses, Siempelkamp is working with Hauhinco ( for its water-hydraulic controls expertise.

The modernization aims to achieve greater repeatability, data recording, and reporting capability for forming processes. Siempelkamp added that changes will make SMK ready to produce heat-resistant nickel alloys using its “HIP + forming” process, and the updated presses will meet the exacting quality requirements of the aircraft industry.  Design work is underway for the modernizations, and both presses will be re-commissioned at the end of 2012.