Alnico magnets are manufactured by undergoing a metallurgic pressing-sintering process or casting process. The raw materials used for Alnico magnets are mixed prior to being heated In preparation for the casting process. Apart from iron, the alloy used for Alnico 500-material contains 24% cobalt, 14% nickel, 8% aluminium, 3% copper and 0.45% niobium. After the exact dosage of each component. a liquefier is added.
The addition of this liquefier ensures better control of the sintering process. The liquefier is removed before the sintering process by warming the material in an oven at a low temperature. To press the material, different techniques are implemented depending on the final form required. Throughout this process the form and dimensions are closely controlled.