Our industrial magnet presses use a timed, floating-fill method that is run by a programmable logic controller (PLC). This system ensures a uniform fill rate that minimizes any shrinkage on the sintered magnet blocks. This prevents any deformation from occurring.

While the magnet presses are running through their compression cycle, hydraulic pressures and flow rates must be monitored and controlled precisely. This function is done by our PLC System, which adjusts the pressure at the valves automatically based on feedback obtained throughout the pressing process.

This level of control allows us to use high-precision molds -- gaps of 25 μm single-side. Better mold accuracy helps eliminate issues that lead to powder leakage, which not only wastes material but also leaves traces on the magnet blocks called flash. Since blocks showing flash traces will need to be reworked by the operators, the ability to eliminate flash results in savings not only in time but also labor costs. These leakage countermeasures also protect the production environment from dust contamination.

The PLC must ensure that the coil is always working at a constant temperature. This is accomplished by balancing the magnetizer's power supply and the coil's cooling system. Controlling the temperature not only stabilizes the field but also greatly reduces costs due to electrical consumption.

The coil assembly, including its built-in cooling system, is shown below. When the temperature is not controlled properly such that the coil's temperature increases, the field strength will drop and the quality of the magnetic blocks will be affected.

Our PLC system has a built-in communication module that allows you to interface our presses with your factory's network to monitor its operation remotely over the Internet. The PLC has a touch screen interface for easy setup. It is convenient and offers simple operation and quick installation.