Round Bidirectional Press Mold for Lab

Introduction

The round bidirectional press mold is a specialized tool used in high-pressure molding processes, particularly for creating intricate shapes from metal powders. This mold is designed to accommodate various shapes, including round, square, rectangular, and hexagonal, by utilizing different mold inserts. The process involves hydraulically applying pressure to a liquid-filled chamber containing the metal powder, which results in the mechanical bonding of the powder particles to form a solid green body. This technique is essential for producing components with large cross-sectional areas or requiring high pressures. The mold also features electric heating capabilities to facilitate the heating process within the tablet, enhancing the molding efficiency and product quality.

Applications

The round bidirectional press mold is versatile in various industrial applications, particularly in the fields of powder metallurgy, rubber molding, and diffusion bonding. This equipment is essential for creating precise shapes with high pressure and uniform heating, making it suitable for a wide range of products and processes.

• Powder Metallurgy: Used for molding powders into complex shapes with large cross-sectional areas under high pressure.
• Rubber Molding: Employed in compression molding, transfer molding, and injection molding processes to shape rubber products.
• Diffusion Bonding: Utilized in large-scale bonding of metal parts, ensuring uniform pressure distribution across extensive surfaces.
• Ceramic Molding: Applicable for pressing ceramic powders into intricate shapes, requiring high pressure and precise temperature control.
• Pharmaceutical Tableting: Used for compressing pharmaceutical powders into tablets, involving electric heating of molds for uniform heating during the tabletting process.
• Advanced Materials Processing: Essential for manufacturing advanced materials where precise pressure and temperature control are critical.

These applications highlight the versatility and critical role of round bidirectional press molds in various high-pressure and high-temperature industrial processes.

Detail & Parts

Technical specifications

Instrument model	PMSY
Sample shape
Die material	Alloy tool steel : Cr12MoV
Indenter hardness	HRC60-HRC62
Sample size	Φ12、Φ13、Φ15、Φ18、Φ20mm(M)
Cavity depth	40mm (N)
Dimensions	Φ88*175mm(L*H)
Weight	3.0Kg
Diagram of hydraulic powder press size

Operation steps

Two way pressurized cylindrical open mold is suitable for samples with high density requirements for powder pressing.

1.Assemble the die according to the operation diagram and install the sample in the cavity.

2.Put the die in the center of the hydraulic press and pressurize to required pressure.

3.Assemble the die according to the release diagram ，eject the sample out of the die bushing with the screw rod.

4.Take out the die from the hydraulic press , and remove the sample gently.

Advantages

• Enhanced Pressure Distribution: The round bidirectional press mold utilizes a multi-cylinder system with large pressing plates, ensuring uniform pressure across the entire surface. This is particularly beneficial for large parts, up to approximately 3 feet x 4 feet, which is significant for diffusion bonding processes.
• Independent Cylinder Control: Each hydraulic cylinder can be controlled independently, allowing for precise adjustments based on pressure transducer readings. This feature ensures that even over large areas, the pressure remains consistent, minimizing defects such as flow lines, blisters, or unfilled parts.
• Improved Stability and Uniformity: The bidirectional pressing method compacts the sample from both sides, resulting in enhanced stability and uniformity. This is crucial for subsequent processing stages and ensures the integrity of the final product.
• Versatility in Part Sizes: The press mold can accommodate a wide range of part sizes, making it versatile for various applications. This flexibility is particularly advantageous in industries where parts of different dimensions are commonly used.
• Reduced Dimensional Variability: Although initial setup may require some trial and error, the process once established becomes highly repeatable. This is beneficial for producing parts with specific dimensions, such as long aspect ratio pellets used in industries like automotive (e.g., spark plugs).

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