Hydraulic open-die forging press

01

Follow the force path and the billet-handling path separately

In open-die forging, upper and lower tools deform the billet without enclosing it in a fixed closed die. The hydraulic system drives the slide; a manipulator positions the workpiece between strokes. SMS describes independent manipulator control synchronized with the press. [6] [3]

A functional structure reference, not a manufacturing bill of materials. Request the project drawings, tool schedule, hydraulic schematic and replaceable-part references for the selected press and cell.

02

Size the force to the ingot

Zhengxi’s YZ12-titled page contains a nine-model Y214 table: nominal force 8–63 MN and maximum liquid operating pressure 25 MPa. Confirm the series and quoted configuration before using its values in a contract. [1]

Selected rows from Zhengxi’s nine-model table. SMS’s 25 April 2023 order announcement separately describes a four-column push-down press with 40 MN forging and 45 MN upsetting force and billets up to “55 tons” (the release’s wording). The announcement is an order specification, not proof of its later commissioning or a direct capacity ranking against Y214-4000T. [1] [2]

03

Check the opening, stroke and speeds

Read daylight, slide stroke, table size and column centres as different dimensions. Tooling and billet-handling clearance must be checked on the proposed layout; the catalogue values alone do not define the largest usable workpiece. [1]

Approach and return

300 mm/s up to 1600T, 250 mm/s from 2000T [1]

Pressing speed

Table: 50 mm/s on all models; the same page's feature list states forming speed of 50–140 mm/s [1]

Rapid forging

40–60 strokes per minute [1]

Forging control accuracy

Zhengxi labels ±1 mm as “Forging Control Accuracy” without a measurement method, load condition or finished-part tolerance. Keep that label; do not convert it into guaranteed forging dimensions. [1]

Permitted eccentricity entry

The table prints φ80 to φ150 mm by model. Obtain the load-position diagram and permitted load at that offset; the page does not define whether the symbol denotes a circle of positions or another measurement convention. [1]

The tabulated pressing speed is 50 mm/s, while the feature text says 50–140 mm/s forming speed. Ask for force-versus-speed and rapid-cycle conditions, including stroke length; 40–60 beats/min is not finished forgings/min. Column centre distances are not the clear gap between column surfaces. [1]

04

Fit the press to the building and ground

SMS recommends push-down layouts where deep foundations are impractical and building height is sufficient, citing low moving mass as an advantage at high stroke rates. Pull-down layouts place cylinders below floor to reduce above-floor height. These are layout choices, not site-specific foundation approvals. [3]

Push-down

Taller above ground; shallower foundations; lower moving mass [3]

Pull-down

For buildings too low for the required press; all hydraulic cylinders below floor, close to the press, with small piping volumes [3]

Height check

Zhengxi’s table gives above-ground height from 7.0 to 13.2 m, without a complete below-ground or service-space envelope. Obtain the general arrangement, crane access, foundation depth and loads for the quoted design. [1]

Frame

Zhengxi describes four-column or split-frame options and Q355B welded structural plates, fully annealed after welding. Obtain the selected frame drawing and material schedule rather than assigning this grade to all components. [1]

05

Plan the whole forging cell

The April 2023 SMS order illustrates a defined press-cell package. It scheduled operation for the second half of 2024; this source alone does not establish the later operating status. Use its scope to identify interfaces and exclusions in a new quotation. [2]

• Rail-bound manipulator, with an ingot car to load it [2]
• Table shifting device for faster upsetting, tool shifting device and tool magazine [2]
• Pass-schedule software with a material database, with automatic, semi-automatic and manual modes [2]
• Online measurement of workpiece geometry and temperature, important for stepped shafts [2]
• Viewing cameras: nine per press in the 2023 SMS order, not a prescribed count for every cell. [2]
• Zhengxi options include manipulator, loading/unloading equipment, side-shift punch, centring and servo fast forging. Its item “Remove from the workbench” is unclear; have the supplier identify that assembly in the scope drawing. [1]

Service access belongs in the cell quotation too. Obtain the selected hydraulic and electrical maintenance instructions, isolation/support arrangements and replacement-part schedule. Zhengxi lists a locking mechanism and hydraulic support device, while Anyang describes pressure discharge and overload protection; catalogue features do not replace their project-specific operating procedures. [1] [5]

06

Keep the press rating, process result and installation load distinct

A nominal force, a control-accuracy claim and a foundation load answer different questions. Use the published model data below with its stated label; define the missing project values before comparing quotations.

07

Attach the billet route and building limits to the enquiry

Paste it into your enquiry below or into an email to a maker, then replace every bracket.

Product: hydraulic open-die forging press; [new / upgrade]
Billet: material/condition [ ]; mass [t]; dimensions [ ]; forging temperature/route [ ]
Operations: upsetting [ ]; drawing [ ]; final geometry and tolerances [ ]
Force: forging [MN]; upsetting [MN]; required force/speed combination [ ]
Working space: daylight reference faces [ ]; tooling height [ ]; slide stroke [ ]; clear column gap [ ]
Motion: loaded speed [mm/s]; rapid rate [beats/min at stroke mm]; table size/travel [ ]
Layout: push-down/pull-down [ ]; building/crane limits [ ]; foundation restrictions [ ]
Handling: manipulator mass/moment/grip requirements [ ]; ingot car and tool handling [ ]
Controls: pass schedule, modes, interlocks and data interfaces [ ]; geometry/temperature measurement [ ]
Utilities: site V/Hz/phases [ ]; installed/demand power [ ]; cooling and oil services [ ]
Acceptance: press accuracy test [ ]; forging trial and dimensional criteria [ ]
Documents/scope: GA, foundation loads, hydraulic/electrical drawings, tooling/spares/training [ ]

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