Development and Features of Rotary Reduction Mill

• Published in: ISIJ International Vol. 31; no. 6; pp. 620 - 627
• Main Authors: Nakasuji, Kazuyuki, Kuroda, Kouichi, Hayashi, Chihiro
• Format: Journal Article
• Language: English
• Published: The Iron and Steel Institute of Japan 01.01.1991
• Subjects: cross angle; feed angle; heavy-reduction mill; Mannesmann Effect; mechanical properties; precision rolling; rotary rolling; three-roll rotary reduction mill
• ISSN: 0915-1559; 1347-5460
• DOI: 10.2355/isijinternational.31.620

A new type of rotary mill, which can reduce solid metallic materials efficiently in a one-pass operation, has been developed. This mill is characterized by the following: (1) Three cone-type rolls are arranged around the pass line. (2) The axis of roll is inclined or inclinable by cross angle as well as feed angle; the cross angle is positive and the feed angle can be set large. (3) Both ends of the roll are supported. Detailed research work on the characteristics of the Rotary Reduction Mill was carried out. First, the principle of the rotary reduction process is discussed. Second, the engineering features of the Rotary Reduction Mill are presented. Third, the dimensional accuracy and surface qualities of rolled bars are described. Finally, the mechanical properties of bars rolled by the Rotary Reduction Mill are described in detail.