サクションロール材に必要な条件

鍛造製ステンレス鋼の材質特性

抄録

Suction roll receives the maximum shear stress at the center of inside surface. This stress causes fatigue cracking at material defects, even if the defects are every small. Many of the breakage trouble of the suction rolls has depend on the casting defects. Therefore, if the material were free from the defects, then the breakage should not have occured. Pitting corrosion was found out only at the casting defects.
The suction roll shell made by one piece forging has no casting defects, so it is possible to design the new suction roll by using a new factor. Forged material is sound and homogeneous, then labo-datas are applicable for design without extra safety parameters.