Abstract
Walking Bar type curvilinear continuous caster holds the slab by surface contact with W. B. and straightens it with low-strain and low-strain rate. The slab bulging and its thermal stress are analyzed by the elasto-plastic finite element method which is supported by the results of the mechanical properties of metals at high temperatures, the composite driven rivet tests and the analytical simulation of the slab internal temperature distributions.
The slab supported with W. B. has only about 1/2-1/7 bulging compared with the slab supported with rolls.
As the observation of the casting stop test, it is confirmed that the parts of the slab supported with W. B. have extremely small deflection but the one of the slab supported with rolls have much deflection.
It is recognized that W. B., indirect cooling system is rather excellent in thermal stress prevention than spray cooling system.
W. B.: Walking Bar
