| OCR Text |
Show 1. Introduction The remote continuous casting - hot direct rolling (CC-HDR) process went into operation at Yawata Works, Nippon Steel, in June 1987. The new process is an advanced version of the proximate CC-HDR process in which the continuous caster is located adjacent to a hot roll ing mi 11, as typically seen at Nippon Nippon S tee I ' s Saka i Works. The remo te CC-HOR process is ef f ec t i ve in accomp Ii - shing enregy, cost and labor savings, and improving quality. In this remote CC-HDR process, the new insulater wi th the luminous wall burners and the slab edge heater by the jet gas impinging were developed and installed in order to keep the slab edge temperature high enough to be rolled a t the ho t s tr i p mill. These i mpor tan t cornbus t i on techno 1 og i es tha t made grea t contributions to the realization of the remote CC-HDR process are described. 2. Slab Flow in Remote CC-HDR Process at Yawata Works The remote CC-HDR process at Yawata Works connects No.1 continuous caster (twin-strand bow-type machine with a radius of 10.5 m and length of 37.5 m) at No.3 steelmaking plant wi th a hot strip mill over a distance of about 600 m via a high-speed insulated transfer car (called the "HDR shuttle). A hot slab from the caster is loaded onto the HDR shuttle by a traverser, transported, changed in direction by a turntable, heated at the edges by a gas-fired edge heater (GEH) just before the hot strip mill, and fed to the hot strip mill. This slab flow is represented by the HDR route in Fig.l. 2 |
