Alnico Channel Magnets

Alnico Channel Magnets, Alnico channels, Alnico Channel Bar Magnet, High Magnetic Cast Alnico Channel Magnet, Strong Bar Holding Channel Magnet China Supplier

Alnico channel magnets can be used for various holding applications and also for removal of tramp iron from chutes carrying grains, plastics, glass, minerals & other materials conveyed in powder or granular form.
Alnico channel bar magnets offer high temperature and corrosion resistance as well as greater magnetic pull than ceramic magnets. They are unpainted Gray in color.

channel magnets Product Specifications

Alnico channels are magnetized as a horseshoe with the South Pole on one side of the channel & the North Pole on the other side.

HSMAG’ alnico channel magnets are made of cast Alnico 5 material. All dimensions approximate and as cast with pole faces ground smooth. Other sizes are available upon request. Contact us at EMAIL or Call if you don’t see what you’re looking for in this brief listing.

Alnico was developed in the early 1930’s. During World War II it was used in military electronic applications. After the war it quickly spread into civilian versions of those applications and replaced magnet steel in many applications. High induction levels with good resistance to demagnetization and stability, due to its low temperature coefficient (0.02% / °C), at a reasonable cost made Alnico the magnet material of choice.

Where Alnico is appropriate, magnet size can be minimized if it can be magnetized after assembly into the magnetic circuit. If used independent of other circuit components, as in security applications, the effective length to diameter ratio (related to the permeance coefficient) must be great enough to cause the magnet to work above the knee in its second quadrant demagnetization curve. For critical applications, Alnico magnets may be calibrated to an established reference flux density value. A by-product of low coercivity is sensitivity to demagnetizing effects due to external magnetic fields, shock, and application temperatures. For critical applications, Alnico magnets can be temperature stabilized to minimize these effects

Alnico magnet material is made by alloying aluminum, nickel and cobalt with iron. Some grades also contain copper and/or titanium. The alloying process is casting or sintering. The process and the heat treatment needed to optimize magnetic properties produces hard (Rc45) and brittle parts that are best shaped or finished by abrasive grinding. Cast parts are generally under 70 pounds and may be used as-is, but polar surfaces are usually ground flat and parallel. Sintering is confined to high volume parts in sizes under one cubic inch and an effective press length to diameter ratio under four.