Title

IN SERVICE BEHAVIOR OF SPUN CASTING WORK ROLLS IN HOT FLAT ROLLING OF STEEL

IN SERVICE BEHAVIOR OF SPUN CASTING WORK ROLLS IN HOT FLAT ROLLING OF STEEL

Authorship

Tremea, Alberto; Pellizzari, Massimo

DOI

10.5151/2594-5297-24090

Downloads

heading.download_article_detail 169 Downloads

Abstract

The evolution of work roll performance involved an increased amount of alloying elements and the following increase of costs. It has become very important to evaluate the behavior of new grades, since the initial stages of development, in order to tune the content and type of alloying elements as a function of the specific application on the rolling mill. One of the most important damage phenomena which strongly influences the roll performance is thermal fatigue. A new test was recently developed to reproduce a similar kind of damage to which the roll is subjected during rolling. In any case, research and development must be always considered in the frame of the industrial use of rolls, thus considering typical rolling practice, possible accidents and turning operations. This work describes by means of some examples a work methodology used to evaluate the in-service behavior of rolls in some mills, paying special attention to thermal fatigue damage.

 

The evolution of work roll performance involved an increased amount of alloying elements and the following increase of costs. It has become very important to evaluate the behavior of new grades, since the initial stages of development, in order to tune the content and type of alloying elements as a function of the specific application on the rolling mill. One of the most important damage phenomena which strongly influences the roll performance is thermal fatigue. A new test was recently developed to reproduce a similar kind of damage to which the roll is subjected during rolling. In any case, research and development must be always considered in the frame of the industrial use of rolls, thus considering typical rolling practice, possible accidents and turning operations. This work describes by means of some examples a work methodology used to evaluate the in-service behavior of rolls in some mills, paying special attention to thermal fatigue damage.

Keywords

Hot rolling; Spun casting roll; Thermal fatigue; Roll performance.

Hot rolling; Spun casting roll; Thermal fatigue; Roll performance.