Normalizing refers to a heat treatment process in which a metal workpiece is heated to a specific temperature, held for a certain period, and then slowly cooled. Normalizing reduces internal stresses in the material, improves the crystalline structure, and enhances ductility and malleability. The cooling rate in normalizing is slightly faster than in annealing, resulting in a finer microstructure compared to annealing, thereby improving the material's mechanical properties. This process represents the normalizing of 1 kg of steel, yielding 0.989 kg of normalized steel. This process should be used in conjunction with production data for 1 kg of steel. The data are compiled from multiple sources related to shafts, gearboxes, and other mechanical and electrical equipment components.