Study of aging behavior of CSP hot bands for cold sheets

In the past, hot bands for the rolling of cold sheets were produced by conventional hot strip mills. More and more hot strips are now produced by Compact Strip Production (CSP) lines. The aging behavior of CSP hot bands was studied by means of age-annealing experiments performed to develop suitable rolling schedules. The aging tests revealed that a larger number of fine precipitates are present in specimens rolled at a lower coiling temperature. The results of these tests showed that the hot bands rolled at higher finishing and lower coiling temperatures were preferred for producing cold sheets with good drawing properties.