Kneading to improve the powder flowability and the completion of the dispersing a complex process, in this step, the preforming agent must be completely and uniformly coated with the powder, mixed into a powder having excellent rheological properties of material.

Inadequate mixing, mixing time, temperature, improper control methods are an important reason leading molding poor. Only through the mixing process to get the best powder rheology, it may be formed of the internal crack, smooth surface of the rod body green. Kneading is likely to cause increased oxygen content, and the kneading temperature must be selected to reduce the mixing time increases the oxygen content, thereby controlling the subsequent decarburization process.

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