Abstract: CC-rolling section as one of the components of the interface model，have an important influence on steel production process.With the hot charging technology in-depth application,the matching between the process devices is by the quantity、production capacity, etc. to theproduction rhythm. The billet rhythm of heating furnace decided to roll the rolling rhythm,thus affecting the rhythm of the entire section. The paper analysis the time interval of CC-Rolling section of YanchangYongxin Steel Mill,guided by queuing theory,optimize the time interval that the billet enters the furnace,put forward reasonable time value, which provides a theoretical support for the management.

Key words: interface pattern, matching, production rhythm, queuing theory