Electric Servo Press for Powder Compaction

Precision Powder Forming for Magnetic Cores and Powder Metallurgy Components

Our fully electric servo powder compaction presses are designed for precision powder forming applications, including iron-based powder metallurgy components, SMC (Soft Magnetic Composite) parts, and precision magnetic cores.

With pressing capacities of up to 80 tons, servo-driven upper and lower punch movement, controlled die positioning, and servo-driven ejection and feeding systems, the press can be configured for different powder compaction requirements. Its coordinated punch, die, and ejection control provides a flexible platform for developing and reproducing powder forming processes according to material characteristics, component geometry, tooling configuration, and production requirements.

Powder Compaction Applications

Electric servo powder presses can be used for a range of powder forming applications where controlled compaction and repeatable part geometry are important.

Typical applications include:

• Powder Metallurgy      Components

• Iron-Based Powder      Metallurgy Parts

• PM Gears and Structural      Components

• SMC (Soft Magnetic      Composite) Components

• Precision Magnetic Cores

• Manganese-Zinc Magnetic      Materials

• Alloy Powder Components

Different powder materials and component geometries may require different filling depths, punch movements, compaction conditions, and demolding strategies. The press can therefore be configured according to the requirements of the specific powder, tooling, and component.

Powder Compaction Challenges

Powder compaction is different from conventional sheet-metal stamping because the final component is formed by compacting loose powder inside a precision die cavity.

The filling condition, punch movement, die position, compaction pressure, and demolding process can all influence the dimensional consistency and density distribution of the compacted part.

This becomes particularly important for components with different cross-sectional heights or more complex geometries. If the powder is not compacted and released under controlled conditions, variations in density or dimensional consistency may occur during production.

For this reason, a powder compaction press needs to provide coordinated control of the punches, die, filling system, and ejection process, rather than relying only on the maximum pressing force.

Servo-Controlled Powder Compaction

Our electric servo powder compaction press uses servo-driven mechanisms to control the forming movements of the upper and lower punches.

The machine architecture also incorporates a die control system for controlled die positioning. According to the machine design, the floating-die pressing system is based on a constant demolding-position principle, allowing the demolding position to remain consistent for components with different heights.

This controlled relationship between the punches and die provides a stable mechanical foundation for precision powder compaction and helps support consistent part dimensions and density distribution.

Upper and Lower Punch Control

The upper and lower punches play an important role in controlling how powder is compacted inside the die cavity.

Servo-driven punch movement allows the pressing sequence to be configured according to the requirements of the component and tooling. Different punch positions and movements can be coordinated during the forming process to accommodate different component geometries.

For applications requiring controlled compaction of multi-level or irregular components, coordinated punch movement can provide greater flexibility than a simple single-direction pressing cycle.

The specific pressing sequence is determined according to the powder characteristics, tooling design, component geometry, and required production process.

Floating Die and Controlled Demolding

The floating-die system is one of the key features of the machine.

The die control system provides controlled die positioning, while the constant demolding-position principle is designed to maintain a consistent demolding position regardless of component height.

This is particularly relevant when producing powder components with different heights or complex geometries. Controlled die movement can help establish more consistent relationships between the compacted component, punches, and die during the forming and demolding stages.

A dedicated die stop structure also provides a defined reference position for the die, supporting dimensional control during forming.

Servo-Driven Ejection

After compaction, the compacted part must be removed from the die without damaging the formed geometry.

The machine uses a servo-driven ejection system to control the product ejection process. The servo-driven ejection mechanism can provide a more controlled release of the compacted component compared with a fixed mechanical ejection movement.

The machine design also supports delayed powder-box movement for certain irregular components, allowing the powder box and lower forming tool to maintain the required relationship during product removal.

This is particularly useful when the component geometry makes demolding more sensitive to interference or contact between the formed part, lower punch, and powder box.

Powder Filling and Feeding Control

Consistent powder filling is an important part of the overall compaction process.

The machine incorporates a servo-driven feeding system to control the material feeding process. Controlled feeding can help establish repeatable powder quantities and filling conditions before compaction.

For the XGY-FM-SEV60T configuration, the maximum die filling depth is 80 mm, with a material allowance of 0–5 mm. The feeding system uses a 0.4 kW servo motor.

The actual filling method and process parameters should be matched to the powder characteristics, component geometry, die cavity, and required production cycle.

Pressure Monitoring and Process Control

Pressure monitoring is integrated into the machine control system to provide visibility into the compaction process.

Monitoring the pressing condition can help identify abnormal process behavior and provide an additional layer of production control. The machine's servo-driven architecture allows the pressing movement and forming sequence to be configured according to the application rather than relying on a fixed mechanical cycle.

For production applications, process parameters can be established through tooling and material trials and then reproduced during subsequent production runs.

Precision Powder Forming for Complex Components

Powder components do not always have a uniform cross-sectional height. Multi-level geometries, stepped sections, and irregular shapes can require coordinated movement between the punches and die.

The servo-controlled architecture provides flexibility for these applications by allowing the forming system to be configured around the specific tooling arrangement.

Rather than selecting a press solely according to nominal pressing force, the application can be evaluated based on:

• Powder characteristics

• Required filling depth

• Component geometry

• Number and arrangement      of punches

• Die movement      requirements

• Compaction force

• Demolding force

• Ejection requirements

• Required forming speed

• Production volume

This application-specific approach helps match the powder press configuration to the actual forming process.The powder press series can be configured with pressing capacities of up to 80 tons for applications requiring higher forming force.

Electric Servo Drive Without Hydraulic Oil

The machine uses servo motor drive technology rather than a conventional hydraulic power system.

The direct servo-drive architecture eliminates the need for hydraulic oil and is designed to provide controlled forming movement, stable operation, and simplified maintenance. The machine structure is also designed to be relatively straightforward, supporting convenient operation and maintenance.

For production environments where energy consumption, maintenance requirements, and working cleanliness are important considerations, an electric servo powder press can provide an alternative to conventional hydraulic powder compaction equipment.

Tooling and Die-Set Integration

Powder compaction performance depends on the complete press-and-tooling system.

The machine is equipped with a dedicated die-change and die-set mounting system to facilitate mold installation and replacement. This design can help reduce setup effort when changing tooling between different powder components.

Tooling configuration should be evaluated together with the press according to the component geometry, punch arrangement, filling method, compaction requirements, and demolding process.

Why Use an Electric Servo Powder Press?

Compared with a conventional fixed-cycle pressing system, an electric servo powder press provides greater flexibility in controlling the forming sequence.

Key advantages of the system include:

• Servo-controlled upper      and lower punch movement

• Controlled die      positioning

• Floating-die pressing      architecture

• Servo-driven product      ejection

• Servo-controlled powder      feeding

• Pressure monitoring

• Configurable forming      speed

• Dedicated die-change and      die-set mounting system

• No hydraulic oil

• Application-specific      tooling and process configuration

These features provide a flexible platform for powder compaction applications ranging from magnetic cores and SMC components to powder metallurgy parts and other precision powder-formed components.

Custom Powder Compaction Solutions

Every powder compaction application has different requirements for powder characteristics, component geometry, tooling, filling depth, pressing force, and demolding.

We can evaluate the required press configuration based on the specific component and production process, including:

Powder Material → Filling Method → Punch Configuration → Die Control → Compaction Process → Demolding → Ejection

From individual powder-formed components to production tooling requirements, the electric servo powder press can be configured around the application rather than relying on a one-size-fits-all machine configuration.

Contact us to discuss your powder compaction application, component geometry, tooling requirements, and required pressing capacity.