Abstract
For energy saving, following new hot rolling processes are very useful. One is the hot rolling system which the slab is passed directly without cooling from slabbing mill to hot strip mill (called Hot Direct Rolling). The other is the system which the slab is charged into reheating furnace in hot condition and then is supplied to hot strip mill (called Hot Charge Rolling). Since energy crisis, in 1974, in steel industries, various utmost efforts for the development of these new processes have been made, so that these techniques were established in the mass production scale and were adopted in seven iron workers in Japan.
In this report, for the purpose of cost minimizing from steel making shop to rolling shop, hot direct rolling process and also future aspects of further developments are described.
