PURPOSE: To reduce the friction coefficient and thrust between rolls, and to prevent bearing troubles, by shifting the timing of stopping the injection of a rolling oil during the idle time after a rolling material runs out of the rolls.
CONSTITUTION: The period of feeding a rolling oil into an idle time is prolonged by 5 and 20 seconds even after the tail end of a rolling material runs out of rolls, and also the rolling oil sticking to the rolls is washed out by a roll cooling water, before the following material is bitten by the rolls, to increase friction coefficient. At that time, if said timing is prolonged by 25 seconds till the feed of oil is made off, the effect for washing out the oil is reduced, and slip is caused when the following material is bitten.
HATAE SEISUKE
SAKAMOTO JIYUN
HAYASHI KANJI
MITSUBISHI HEAVY IND LTD