Isostatic Press
Our company is equipped with fully automatic wet cold isostatic press. Based on Pascal’s principle of liquid pressure transmission, pre-pressed NdFeB magnet green bodies are sealed in flexible rubber sleeves and loaded into a high-pressure sealed chamber. The hydraulic system builds up pressure, and the high-pressure medium applies uniform force from all 360° directions. It eliminates the internal density gradient caused by uniaxial die pressing and achieves overall densification of magnet green bodies. It is the key process equipment for manufacturing sintered NdFeB magnets with high consistency and high performance.
Balanced Green Body Density, Prevent Deformation & Cracking
Conventional uniaxial pressing only applies force vertically, resulting in uneven density inside the blank. Such blanks are prone to warpage, cracking and large dimensional deviation during sintering. Isostatic pressing compacts the blank with uniform pressure across all directions, delivering consistent internal density. It greatly reduces sintering reject rate and supports forming of ring, block, special-shaped and large-size NdFeB blanks.
Improved Comprehensive Magnetic Performance of Magnets
Magnetic powder alignment becomes more regular with better grain orientation consistency. Fluctuations of finished magnet parameters including remanence, coercivity and maximum energy product are minimized. It stably produces high-performance NdFeB grades from N35 to N55 and ultra-high coercivity series.
Flexible Production for Multiple Specifications
A single chamber can press multiple blanks of different specifications simultaneously. It is suitable for mass regular production as well as custom forming of large-size, slender and complex special-shaped magnets, featuring great production compatibility.
Intelligent Electric Control System
Fitted with PLC integrated control cabinet. Pressure, dwell time, lifting and start-stop can be fully programmed and automatically adjusted. Pressure is precisely controlled, process parameters can be archived and traced to guarantee high stability for batch production.
High-Strength Pressure-Bearing Main Structure
The high-pressure cylinder adopts high-strength pressure-resistant design with outstanding pressure resistance and sufficient safety margin. It has great durability under long-term high-pressure working conditions and low failure rate.
Integrated Lifting Structure
Equipped with dedicated lifting tools and maintenance platform. Loading and blank retrieving are convenient and efficient. Automatic cyclic operation shortens the production cycle per batch and boosts the capacity of the whole forming section.
Complete Safety Protection System
Integrated with multiple protection mechanisms: overpressure protection, interlock start-stop, emergency pressure relief and fault alarm. It complies with industrial safety standards to avoid safety hazards in high-pressure operation.
Benefiting from isostatic pressing technology, our NdFeB blanks achieve industry-leading consistency and dimensional stability, which significantly raises the yield in subsequent sintering, machining and electroplating processes. We supply custom permanent magnets with tight tolerance, stable magnetic performance and excellent consistency for customers in new energy motors, wind power, servo motors, medical devices, precision sensors, rail transit and other industries. It consolidates product quality competitiveness from the source.