Shot Blast Annealing and Normalizing For pre-heat treatment of blanks, the following purposes can be achieved:
① to eliminate or improve the preparation of blanks caused by a variety of organizational defects.
② get the most conducive to cutting the organization and hardness.
③ to improve the organization of phase morphology and distribution, grain refinement, for the final heat treatment organization ready to prepare mouth.
Annealing and Normalizing The primary purpose of the intermediate process is:
① eliminate and reduce internal stress, in order to reduce the deformation or cracking process after the tendency to crack.
② eliminate cold hardening, softening the metal, in order to facilitate the cold plastic deformation continues.
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