How to choose a hydraulic press Machine for forging Alloy Special Steel

In the field of metal processing, alloy special steels, with their excellent properties such as high strength, corrosion resistance, and high-temperature resistance, are widely used in high-end manufacturing fields such as aerospace, military equipment, and precision machinery. However, these superior properties also bring significant processing challenges—higher deformation resistance, stricter temperature control requirements, and more complex microstructural changes. Choosing a suitable hydraulic press is not only crucial for processing efficiency but also directly impacts the final performance and quality stability of the product.

I. Analysis of Processing Characteristics of Alloy Special Steels

1.1 Requirements for Equipment Based on Material Characteristics

lHigh deformation resistance: The strength of most alloy steels can reach over 1000 MPa at room temperature.

lNarrow processing temperature window: Some materials exhibit good plasticity only within a specific temperature range (e.g., 850-1150℃).

lSensitive microstructure changes: Temperature rise control during processing is crucial.

lSignificant springback phenomenon: Higher forming force and holding time are required.

1.2 Common Types of Alloy Special Steels and Their Processing Characteristics

II. Core Technical Parameters for Hydraulic Press Selection

2.1 Special Considerations for Tonnage Calculation

Tonnage Correction Formula for Alloy Special Steel:

P_required = K_m × K_t × σ × A × C

Where:

K_m: Material correction coefficient (1.3-1.8 for alloy steel)

K_t: Temperature correction coefficient (0.6-0.8 for hot working, 1.2-1.5 for cold working)

σ: Yield strength of the material at the processing temperature

A: Projected area of deformation

C: Process coefficient (4-8 for free forging, 3-5 for die forging)

Example Calculation:

Upsetting of an Inconel 718 alloy rod with a diameter of 80 mm at 950°C

σ = 450 MPa (at 950°C)

A = π × (40)² ≈ 5026 mm²

P = 1.6 × 0.7 × 450 × 5026 × 5 ≈ 12,650,000 N ≈ 1290 tons

Recommended equipment: Hydraulic press with a capacity of 1600 tons or more

2.2 Key Parameter Configuration Table

III. Hydraulic Press Configuration Optimized for Alloy Steel

3.1 Optimal Structural Type Selection

Recommended: Pre-stressed frame hydraulic press

Advantages: High rigidity (deformation ≤ 0.5mm/m), strong resistance to eccentric loads

Accuracy: Slide parallelism ≤ 0.08mm/m, repeat positioning accuracy ±0.05mm

Lifespan: Design life is 30-50% longer than four-column type

3.2 Special Requirements for the Control System

Required configuration:

Multi-mode pressure control

Constant pressure mode: suitable for precision forming

Constant displacement mode: suitable for dimensional control

Pressure-displacement mixed control: for complex processes

Integrated temperature management system

Mold temperature monitoring (0-500℃, accuracy ±2℃)

Workpiece infrared temperature measurement (400-1300℃, accuracy ±5℃)

Cooling system linkage control

Process parameter database

Stores at least 100 material process curves

Adaptive learning function

Quality traceability system

IV. Application Scenarios and Machine Model Matching

4.1 Equipment Configuration for Different Processes

Scenario 1: High-Temperature Alloy Isothermal Forging

Process Characteristics: Extremely high temperature control requirements, sensitive to deformation speed

Recommended Configuration:

Tonnage: 2000-8000 tons

Structure: Frame type, with pre-tension monitoring

Temperature Control: Mold heating ±3℃, workpiece temperature monitoring

Speed: 0.1-50mm/s steplessly adjustable

Scenario 2: Tool Steel Fine Blanking

Process Characteristics: High precision, small clearance, high surface quality requirements

Recommended Configuration:

Tonnage: 800-2500 tons

Guidance: Rolling guide rails, clearance ≤0.03mm

Control: Multi-link synchronous system

Accuracy: Position repeatability ±0.02mm

Scenario 3: Composite Machining Center

Process Characteristics: Multi-process integration, high degree of automation

Recommended Configuration:

Tonnage: 1000-4000 tons

Automation: Robot loading and unloading system

Mold Library: Automatic mold changing system

Monitoring: Fully digital production process monitoring

DAYI Heavy Forging Technology focused on the R&D, manufacturing and sales of heavy hydraulic stamping presses, high-speed open die forging presses, closed die forging press, forging manipulator, forging transfer and related auxiliary, for sheet metal fabrication and forming industry since 2005 in China.

Our hot sale products as below:

1. 630-30000 tons hydraulic stamping presses.

2. 1250–15000 tons Hydraulic open die forging press.

3. Titanium alloys and superalloys forging press.

3. Composite materials forming hydraulic press.

4. Closed dies and free hydraulic forging press.

5. 5~400 tons full hydraulic forging manipulator.

6. 5~400 tons forging transfer.

7. Tube end thickening upsetting hydraulic press machines.

8. Automatic shafts & trailer axle extrusion hydraulic press.

Our heavy hydraulic press forging Machine support customized 300~30000 tons for demand from aerospace, Electric vehicles, ships, high-speed rail, wind power, nuclear energy, composite, Ti alloy forging, household appliances, general industrial forging.If you have any technical needs, please feel free to contact us.Welcome to visit our factory for a tour and inspection.