Mechanical Engineering

Normalizing :- Normalizing is a heat treatment process used to refine the structure of the steel to improve machinability, tensile strength, structure of weld and to remove cold working strains etc.  Normalizing is often used for ferrous alloys that have been austenitized and then cooled in open air. Normalizing not only produces pearlite, but also bainite and sometimes martensite, which gives harder and stronger steel, but with less ductility than full annealing. The hardness obtained after normalizing depends on the steel dimension analysis and the cooling speed used.  Objectives of Normalizing :-  It produces a uniform structure It improves tensile, impact & yield strength It refines the internal structure to fine grains It removes the internal stress formed during previous operations It improves structures in welds It produces a harder and stronger steel then full annealing  It eliminates the carbide network at the grai...