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    HomeOpinionTechnology ArticlesMore about Alnico Magnets

    More about Alnico Magnets

    Explore the Latest Automotive Technologies and Solutions from Permanent Magnets Ltd. exclusively at Auto EV India 2022 from 9th to 11th November 2022 at KTPO Bengaluru.

    Alnico are precipitation hardened alloys requiring special heat treatment techniques. The raw materials used are Cobalt, Nickel, Copper, Aluminum, and Iron. Titanium, silicon, etc. are added in certain proportions. The raw materials in their purest form are melted in medium frequency induction furnaces and castings are made using conventional sand or shell mould.

    The heat treatment consists of heating the alloy in a furnace to well above its curie-point and holding it at that temperature for some time. This is followed by controlled cooling after which the castings are reheated and held for a long period at a temperature of about 600ᵒC. This aging process increases the coercive force and the energy product. Finally, the castings are ground to obtain close dimensional tolerances whenever necessary and inspected for physical and magnetic accuracy.

     

    Excellent temperature stability, high residual induction, and relatively high energies characterize AlNiCo material. They can be manufactured in a number of complex shapes such as horseshoes.

     

     

    Applications of various typical cast Magnets – Alnico

     

    Chuck Magnet  

     

     

     

     

    Drain Plug Magnets

     

     

     

     

     

     

    Relay Magnets

     

     

     

     

     

    Speedometer and Sensor Magnets

     

     

     

     

    Educational Magnets

     

     

     

     

     

    Measuring Instrument & Weighing Balance Magnets

     

     

     

     

     

    Automobile Strainer Magnets

     

     

     

     

     

    Rotor Magnets

     

     

     

     

     

    PML also specializes in manufacturing isotropic magnets. These types of magnets have the unique property of exhibiting Multiple Poles.

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