Electric hydraulic press for blacksmithing is a specialized equipment widely used in the field of metal forging. With its compact structure, efficient forging capability and precise control performance, it plays a significant role in the production of precision forgings. This article focuses on introducing its key technical features such as the pull-down structure, cast steel frame and Center of gravity low position.
Working principle of the hydraulic press:
The hydraulic cylinder is installed inside the upper fixed crossbeam, driving the movable crossbeam to move downward along the column. This applies forging pressure to the billet placed on the lower die, thereby achieving forging processes such as upsetting, drawing, and punching.
1. Pull-down design
The small speed forging hydraulic machine adopts a pull-down type (also known as the upper-moving type) structure, where the movable crossbeam moves downward to complete the forging action, while the fixed crossbeam is located below.
Main features:
- Compact structure, low space occupancy - The overall height is relatively low, making it easy to be flexibly arranged within the workshop.
- The forging force transmission path is short - the upper crossbeam undergoes downward forging, reducing the loss of energy during the transmission process.
- Facilitates loading and unloading operations - The workpiece is placed on the fixed lower platform, making it more convenient and safe for the operator to pick up and place the workpiece.
- The mold is installed firmly - The lower mold is securely fixed on the anvil base, providing good stability and facilitating the guarantee of the forging accuracy.
Cast Steel Frame
The small forging hydraulic machine body is made of cast steel through a single casting process. This is a key design that ensures the strength and rigidity of the equipment.
Advantages of the cast steel frame:
- High strength and high rigidity - Cast steel possesses excellent mechanical properties and can withstand the huge impact loads and cyclic stresses during the forging process.
- Excellent shock absorption performance - The damping characteristics of the cast steel structure are excellent, which can effectively absorb forging impact vibrations and reduce the impact on surrounding equipment.
- Good integrity and stable accuracy - The overall cast frame avoids the deformation problems that may occur in welded structures, maintaining high accuracy over a long period of use.
- Structural optimization design - Through computer-aided design (CAD/CAE), optimize the wall thickness and the layout of stiffeners to achieve a balance between lightweight and high strength.
- Long service life - Cast steel material is resistant to wear and fatigue, suitable for large-scale continuous production.
Low Center of Gravity Design
Small rapid forging hydraulic presses typically adopt a low center of gravity design, meaning that the center of gravity of the entire machine is located at a lower position.
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Advantages |
Explanation |
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Operational stability |
With a lower center of gravity, the equipment experiences less vibration during forging impacts, resulting in smoother operation |
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No need foundation |
The hydraulic press without any vibration and impact on the foundation, which can install on the floor without special foundation |
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Compact structure |
Combined with the downward pull structure, it further reduces the overall height of the machine |
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Enhanced safety |
Significantly reduces the risk of overturning and improves the operational safety coefficient of the equipment |
Technical specifications
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Anyang STP Series Press Parameter |
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STP-30 |
STP-50 |
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Nominal force |
30 Ton |
50 Ton |
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Sroke |
300 mm |
235 mm |
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Down Speed |
≥40mm/s |
≥30mm/s |
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Forging Speed |
≤20mm/s |
≤20mm/s |
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Up Speed |
≥70mm/s |
≥50mm/s |
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Working Area (H*W) |
300mm*380mm |
235mm*380mm |
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Die Table(W*L) |
330mm*380mm |
380mm*380mm |
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Height of Bottom Die |
915 mm |
1040 mm |
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Oi Pressure |
25 Mpa |
25 Mpa |
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Oi Tank(HL-46) |
150 L |
180 L |
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Motor Power |
4.0 Kw |
7.5 Kw |
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Outsize ofMachine(L*W*H) |
380*700*1300 mm |
380*750*1450mm |
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Outsize ofPower Station(L*W*H) |
700*900*1000mm |
900×1000×1200mm |
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