Large‑scale steel extrusion presses require immense metal‑forming forces. The SCHWERLL ultra‑large piston accumulator system is a proven engineering solution, enabling higher‑capacity extrusion pressures while significantly reducing installed power, effectively minimizing the footprint, and delivering a more compact, energy‑efficient design.
The process advantages of a hydraulically controlled system that uses an SCHWERLL piston accumulator as its primary power source include: 1. Using standard oil pumps, the system only accounts for accumulator charging and other process requirements that necessitate pump control—such as vertical perforation—and features a reduced overall number of components. Moreover, it accommodates standard‑specification pumps at an affordable price, and the accompanying high‑power motors with soft‑start functionality are available in limited quantities. The volumes of the fuel tank, cooling system, and return oil filter are all relatively small. 2. Large-scale extrusion presses for steel and titanium tubes generally employ a piston‑accumulator system as the primary power source for the extrusion process. On extruders equipped with electric oil pumps, the extrusion energy is increasingly derived primarily from accumulator systems. 3. In extruders, employing dynamic accumulator drive can achieve 400… Maximum valve stem speed in mm/s (the actual speed shall be determined based on the accumulator’s volume) 4. The accumulator system features low operating costs, including electricity consumption, in the later stages of operation. 5. The cleanliness requirements for hydraulic fluids are lower when using standard hydraulic pumps compared to those for electronic pumps paired with high‑precision proportional servo valves, which is more conducive to subsequent operations. 6. Extruders equipped with accumulator systems represent a well‑proven, engineering‑validated, and highly cost‑effective solution. When pump‑controlled, the process is characterized by: 1. Oil pumps typically require electronically controlled oil pumps with closed-loop pressure, flow, and power regulation; for example, consider extrusion. 3s 600L Taking the oil‑drain requirement as an example, with a flow rate of 12,000 LPM, even considering only extrusion, the pump would still need to deliver 24. Taiwan 500LPM Electronic oil pump, with matching motor (for high-power applications) 24 Taiwan) + accompanying soft-start control cabinet 24 Set + large-capacity oil tank + high‑power cooling and return‑oil filtration; both the system and installed power are exceptionally substantial. 2. Meanwhile, the system cleanliness requirement is: 6 Level; high requirements for control difficulty and precision 3. The installed volume is enormous. 4. Once the equipment is put into operation, its energy consumption is substantial.
Leveraging its cutting-edge technology for ultra‑large piston accumulators—featuring high‑precision cylinder‑bore machining with exceptionally low residual stress—and robust raw‑material quality‑control processes, SCHWERLL has, in recent years, supplied super‑large steel extrusion presses with high‑capacity, 35 MPa‑rated, hydraulically controlled accumulator systems. Its products have been integrated into equipment from leading manufacturers such as Danieli, while also equipping steel extrusion presses from Panzhihua Special Steel, Changbao Co., Ltd., Jiuli Co., Ltd., Longda Co., Ltd., Tongze, Jiangsu Jinhe, and others, delivering high‑quality, reliable, and stable performance.
In the field of large extrusion presses, SCHWERLL has, in recent years, become the industry’s leading supplier of super‑piston accumulator systems for such equipment, backed by a wealth of proven applications.
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