Increase Roll Temperature when the Calender is Stopped

heat_wave

Increase the temperature by 20 to 40 degrees F when the rolls are stopped to maintain a more uniform roll surface temperature. The TCU (Temperature Control Unit) controls the temperature of the water exiting the calender not the roll surface temperature. This is an important distinction. When the calender is not actively processing rubber, i.e. during warm-up and when the calender is stopped, the roll surface is losing... --more

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Limit Force Induced Gauge – Keep the Calender Running

gump

Keep the calender running – stops cause the rolls to become egg shaped and introduce significant gauge thickness variation. When the calender is stopped, roll heat loss is not uniform around the roll. Heat loss along the circumference near adjacent rolls is minimal while heat loss in other areas is much higher. This leads to different temperatures and therefore different degrees of roll expansion. A few degrees on a... --more

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1 Comment Posted in Category Calendering