Centrifugal Chilled Cast Iron Roll

Introduction

The cast iron roll is produced by a horizontal centrifugal casting process with high-speed steel as the work layer and nodular iron as the core. The material of centrifugal casting iron roll contains plenty of alloying elements such as Mo, Ni, Cr, etc. The high hardened eutectic carbides & second carbides, evenly distributed in tempered martensitic matrix, make the wear and thermal cracking resistance very excellent. Besides, the resistance to surface roughing is also good. In a condition of hot rolling, the contact points between steel strip and the work rolls can form a thin adherent oxide film on the roll surface, which plays a good role in the wear features and the quality of the strip surface. The main application is as a working roll for hot-rolled strip leveling rack and rack of high-speed wire mill. 

Thanks to its higher content of Ni and Mo alloys, basanite and martensite matrixes with excellent performance are produced. There are small changes in hardness of centrifugal chilled iron roll. It is extremely efficient in toughnessm preserving heat split, preserving surface coarse and abrasion-resistant. 

Application

SGA cast work roll for hot-rolled strip leveling rack;

Rack of tandem rolling mill for section, bar, wire rod and narrow strip

Roll ring and roll of stretch reducing mill for seamless steel tube

Work roll of hot-rolled strip tempering rack and medium plate mill rack

Tandem rolling bar and rack of high-speed wire mill

Chemical Composition

Physical Properties

Metallographic Structure