Through brief analysis of common rollspalling form, this paper puts forward the precautionary measures to be taken in coldrolling wokroll’s use, maintenance, management and so on.

Through a following-up investigation for two years into the problems of roll deterioration in a cold rolling mill, the authors kaye concluded the rules of the roll deterioration and found that roll surface spalling is the main factor that causes the rolls scrapped ahead of time in their service life.

Spalling and Preventive Measures of Cast Hot-Strip Roll;

It has been analyzed the causes for both heavy surface spalling and "side spalling" of back-up roll for hot strip mill.

The paper analyses the spalling of 5Cr forging cold work rolls in the CSP Plant of Baotou Steel Corp.

The analysis shows that the beforehand physical defects and carbonization may be the reason for barrier's desquamation.

By means of chemical analysis,rigidity test,metallographic examination and fracture analysis,it was found that the main reason for the backup roll's desquamation was possible crack headspring which was offered by impurity in interior tissue.

Some common types of work roll desquamation in rolling of medium and heavy plate are introduced.

The main reasons of CSP work roll flaking in Lianyuan Steel are the uneven slab temperature,uneven roll cooling temperature and the rolling accident.

Results show that the leading mechanisms of both alloys are shallow flaking under 2.

The failure types of roll such as flaking, fracture, crack etc are described.