COMPOSITE ROLL AND ROLLING METHOD

摘要

This composite roll comprises a steel roll shaft material and an outer layer provided to the circumference of the roll shaft material. The outer layer includes a sintered compact containing: a matrix which is an iron based alloy; a fibrous inclusion composed of a ceramic and having an average thickness of 1 to 30 µm and an average aspect ratio of 10 to 500; and a particulate inclusion composed of a ceramic having an average particle diameter of 1 to 100 µm. The content of the fibrous inclusion is 5 to 40 vol% with respect to the sintered compact and the content of the particulate inclusion is 5 to 30 vol% with respect to the sintered compact.