A cold forging hydraulic press uses a die to apply pressure to metal, causing plastic deformation to obtain parts of the desired shape and size. It is suitable for extruding metal materials, such as stepped shafts, discs, gear parts, and for applications involving thickness, length, drilling, and bending. It is particularly suitable for extruding aluminum products and aluminum alloy automotive parts.

This article mainly introduces our 1000-ton hydraulic cold forging press. It is suitable for cold extrusion of universal cross shafts, IGBT copper radiator plates, aluminum shells and square tubes, lead bricks, new energy battery shells, motorcycle parts, mobile phone casings, LED radiators, watch straps, watch cases, hardware tools, etc.

PDH‘s cold forging presses are available in various structures, including four-column, frame, single-arm, and gantry frame types, and can be equipped with a servo CNC system. It features high extrusion speed and high precision. It can also be equipped with upper and lower pusher cylinders to meet the material return requirements of cold extruded products.

Working Principle of Cold Forging Hydraulic Press

Cold forging machines are primarily based on the principle of plastic deformation of metals, utilizing high-pressure hydraulic fluid as a power source. At room temperature, the equipment drives a slide block downwards via a main cylinder, applying immense static pressure to the metal billet placed within the die.

When the pressure exceeds the yield strength of the metal material, the billet undergoes intense plastic flow within the die cavity, thereby obtaining the desired part shape, size, and mechanical properties. Compared to hot forging, cold forging does not produce oxide scale. Furthermore, due to the work hardening effect, the strength and hardness of the formed parts are significantly improved.

Performance Characteristics of the 1000T Cold Forging Press

1. High Rigidity Machine Structure

Adopts a computer-optimized frame or four-column structure. Verified by finite element analysis (FEA), it ensures that the machine body maintains extremely high geometric accuracy and minimal elastic deformation under high-pressure operation, extending the service life of the molds.

2. High-Precision Servo Control System

Equipped with an advanced servo-hydraulic control system, it can achieve precise digital adjustment of pressure, position, and speed. Repeat positioning accuracy can reach ±0.01 mm/pm, and pressure control accuracy is within ±1% mm/pm, ensuring product consistency.

3. Flexible Process Settings

Supports various forming process curve settings, including rapid descent, slow pressing, pressure holding and unloading, and rapid return. Users can flexibly adjust operating parameters on the human-machine interface (HMI) according to different materials and workpiece complexities.

4. Comprehensive Safety Protection

Integrates light curtain sensors, mechanical safety locks, and two-hand operation buttons, meeting international industrial safety standards. It has a complete fault self-diagnosis function and monitors the system pressure, temperature, and displacement status in real time.

Advantages of PDH’s Cold Forging Machines:

High Material Utilization: Cold forging is a minimal or no-cutting process, achieving a material utilization rate of 80%-95%, significantly reducing raw material costs.

Superior Product Performance: Cold-forged parts have continuous and shape-compliant internal fiber structures. They have low surface roughness (Ra0.4-Ra1.6) and dimensional accuracy comparable to precision-machined parts.

Energy Saving: Utilizing servo drive technology, the system outputs power only during operation, with extremely low power consumption in standby mode. This results in 30%-50% energy savings compared to traditional hydraulic presses.

Die Protection Mechanism: Equipped with micron-level die deceleration, effectively preventing die cracking due to hard impacts and significantly reducing wear and tear on expensive cold forging dies.

Main Application Areas of Hydraulic Cold Forging Presses:

• Automotive Industry: Planetary gears, output shafts, universal joint forks, spark plug housings, brake pistons, etc.
• Hardware Tools: Various high-strength sockets, wrench heads, fasteners, and special-shaped parts.
• Electronics and Electrical Engineering: Heat sinks, precision connectors, sensor housings, motor housings.
• Military and Aerospace: High-precision missile casings, pipe fittings, and lightweight structural components.

Technical Parameters of Cold Forging Hydraulic Press (for reference)

The following are the standard series parameters, and customized development is supported for specific stroke, pressure and table size.

PDH After-Sales Service and Support

PDH is a professional cold forging machine manufacturer in China. We not only provide high-quality cold forging hydraulic press equipment, but also complete cold forging process solutions:

• Process Consulting: Assisting customers in conducting feasibility analyses for cold forging their products.
• Mold Matching: Providing mold design solutions and trial molding services.
• Remote Maintenance: Leveraging IoT modules to achieve remote monitoring of equipment operating status and expert technical support.
• Rapid Response: Providing on-site technical service within 24 hours to ensure stable production line operation.