PDH’s die forging presses utilize a highly rigid frame structure and an advanced hydraulic drive system, offering stable pressure, high precision, and high efficiency. They ensure consistent part dimensions and excellent mechanical properties. Through PLC intelligent control, they enable automated production and support integration with robotic arms, loading and unloading systems, and other supporting systems. These hydraulic die forging presses not only significantly improve production efficiency and material utilization, but also reduce energy consumption and labor costs, making them an ideal choice for modern forging companies seeking to enhance their competitiveness.

Working Principle of Die Forging Press

Die forging presses primarily rely on constant pressure or energy to press metal billets into upper and lower die cavities, forcing them to flow along the dies, fill the cavities, and form the metal. Unlike free forging, hydraulic die forging presses rely on dies to precisely control the shape and dimensions of the workpiece, enabling mass production.

Structural Components of Hydraulic Die Forging Press

1)  Main body

Columns, crossbeams, slides, work tables, etc., bear the entire die forging load, ensuring rigidity and precision.

2) Power System

Hydraulic System: Consists of a hydraulic pump, valve block, and cylinders, providing stable pressure.

3) Die System

Upper and lower dies, along with guides, ensure accurate forming of the billet.

4) Lubrication and Cooling System

Provides lubrication of sliding components, prevents overheating, and extends the life of the die and machine components.

5) Electrical Control System

PLC control and human-machine interface provide monitoring and adjustment functions for pressure, stroke, speed, temperature, and other parameters, enabling automated production.

Classification of Die Forging Presses

1) Hot Die Forging Press

A press that performs die forging of metal blanks at high temperatures (usually above the metal’s recrystallization temperature).

♦ Features:

• Good metal plasticity, low deformation resistance, and easy filling of complex die cavities.
• Can form large, complex parts with reduced cracking risk.
• Die life is relatively short, requiring high-temperature-resistant steel and cooling and lubrication measures.

♦ Applications:

Widely used in the production of key parts such as automotive crankshafts, connecting rods, gears, aerospace turbine disks, large shafts, and rings.

2) Cold Die Forging Press

A press that performs die forging of metal blanks at room temperature.

♦ Features:

• High forming accuracy, excellent surface finish, and minimal subsequent machining are achieved.
• High part strength and hardness, resulting in excellent performance.
• High forming forces, high die loads, and wear require high-strength die materials.

♦ Applications:

Commonly used in the mass production of automotive fasteners (bolts, nuts), gears, shafts, and small connectors. Suitable for low-carbon steel, aluminum alloys, and copper alloys with good plasticity.

3) Warm Die Forging Press

A press that performs die forging in a temperature range between below the metal’s recrystallization temperature and above the cold forging temperature.

♦Features:

• Combines the advantages of cold and hot forging: lower forming force than cold forging, higher precision than hot forging.
• Die life is longer than that of hot forging, and part performance is better than that of cold forging.
• The process is flexible, but requires strict control of heating temperature and lubrication methods.

♦ Applications:

Suitable for die forging light alloy parts such as aluminum, magnesium, and titanium alloys, as well as small and medium-sized parts with complex shapes and high precision requirements.

Hydraulic Die Forging Press Technical Parameters

Notes:

• The above parameters represent typical ranges; actual specifications can be tailored to meet customer requirements.
• Large-scale presses (>100 MN) are primarily used in the aerospace, energy, and shipbuilding industries.
• Medium and small presses (6–40 MN) are widely used in the automotive and construction machinery industries.

Features and Advantages

1. High-rigidity structure: The body features an integral frame design, minimizing deformation and providing high stability.
2. Stable pressure: Provides uniform forming force throughout the entire stroke.
3. High precision: The die determines product dimensions, ensuring excellent repeatability and consistency.
4. High production efficiency: Multi-station die forging is possible, making it suitable for large-scale production.
5. High material utilization: The blank fill rate is excellent, resulting in reduced cutting allowance.
6. Excellent performance: The metal fiber structure flows smoothly, improving the mechanical properties of the part.
7. High degree of automation: The machine can be equipped with a robot and an automatic loading and unloading system to achieve assembly line operation.

Applications of Hydraulic Die Forging Machine

Die forging presses are widely used in the following industries:

• Automotive: Key parts such as engine crankshafts, connecting rods, gears, and wheel hubs.
• Aerospace: Turbine discs, wing connectors, and high-strength fasteners.
• Rail transportation: Axles, wheels, and coupler buffers.
• Engineering machinery: Gears, ring gears, shafts, and hydraulic components.
• Hardware tools: Wrenches, pliers, and tool blanks.

As a professional forging press manufacturer in China, PDH can customize high-quality hydraulic die forging machines to meet customers’ specific needs. Contact us now!