The main shapes of sintered NdFeB magnets are disc round, square, cylinder, ring, tile and various special-shaped products. In actual production, large blanks are produced first, and then finished products are processed according to the size requirements of customers.Sintered NdFeB is prepared by powder metallurgy. The material has the characteristics of high hardness, high brittleness and easy breakage. Exotherms during processing, corrosion, and defects can all impair magnetic properties. T...