WIDE STRIP HOT ROLLING PROCESS

摘要

FIELD: rolled stock production, namely manufacture of hot rolled strips. ^ SUBSTANCE: process comprises steps of hot rolling strips in wide strip rolling mill; cooling strips between stands in finish stand group of mill by means of water fed on upper and lower sides and further water cooling of strip in outlet roller table. At rolling in finish stand group, heat profile of strip is monitored by means of differentiated controlled cooling of surface of working rolls by water along their width. Cooling of upper and lower sides of strip is performed just at outlet side from deformation zone. Quantity of water fed to each successive stand along rolling process is by 5 -15% less than quantity of water fed to each previous stand. Water quantity fed downward onto working rolls exceeds that fed upward. ^ EFFECT: uniform (along width) temperature profile of strip in finish stand group of mill without inter-stand cooling of strip, effective control of rolled piece geometry along its width. ^ 1 ex