Patent ID: 9676015
Date: 2017-06-13
CPC Classifications: B21B,B22F,C22C

Claim:
1. A composite rolling mill roll comprising: a steel roll shaft; and an outer layer provided around the roll shaft, wherein the outer layer includes a sintered body including a base metal which is an iron alloy, a fibrous inclusion which consists of a ceramic and has an average diameter of 1 to 30 μm and an average aspect ratio of 10 to 500, and a particulate inclusion which consists of a ceramic and has an average diameter of 1 to 100 μm, an amount of the fibrous inclusion is 5 to 40 volume % relative to a volume of the sintered body, and an amount of the particulate inclusion is 5 to 30 volume % relative to the volume of the sintered body.