To make a method which is advantageously suitable to the manufacture of a product especially a grain oriented electrical steel sheet to which high-temperature heating of a slab is indispensable by uniformly performing the heating of the slab in the width direction of the slab in hot rolling method by which rolling is performed with a hot-rolling equipment train in which vertical electric heating furnaces are incorporated.
In the hot rolling method by which rolling is performed by passing a material to be rolled through the hot-rolling equipment train in which a gas heating furnace, roughing mill and a continuous finishing mill are successively connected through roller tables and at least one vertical electric heating furnace is arranged on one side of the roller table and at least two furnaces are arranged on both sides, the material to be rolled is inserted into the vertical electric heating furnace arranged on either side of the roller table before starting the rolling with the continuous finishing mill after extracting the material to be rolled from the gas heating furnace and, next, before starting the rolling with the continuous finishing mill and, next, when inserting the material to be rolled into the vertical electric heating furnace arranged on the either other side of the roller table, the material to be rolled is inserted under arrangement by which an end part in the width direction of the material to be rolled on a side near to the vertical electric heating furnace is on the side of the furnace bed in the inside of the vertical electric heating furnace and, after that, the continuous finish rolling is performed.
COPYRIGHT: (C)2005,JPO&NCIPI
Eitaro Shitara
Toshiaki Takamiya
| JP6015306A | ||||
| JP6330158A | ||||
| JP1091907A |