Hopper magnets are used to collect ferous material and prevent contamination. This type of permanent magnetic grid magnets is mainly used in the plastic industry for the thorough separation of ferrous particles. By passing the material over the grid, magnetic contaminants are attracted and removed from the bulk material.
All hopper grate magnets are manufactured by using a fully stabilized ferrite magnetic material. The protection of the magnetic cores by thin walled stainless steel tubes creates some very important advantages:
Good magnetic field strength;
Protection of magnetic cores;
Easy of cleaning.
The square and round hopper magnets are specially designed to protect injection molding machines, extruders and other processing machines against iron contamination.
Easily mounted over the throat of your injection molding machine or extruder hopper or in your granulators catch bin. These reliable magnets keep ferrous metal scrap from entering your injection or extrusion barrel and damaging screws, ring valves, dies, and moulds.