In spite of speedy development of technical tools for examination, the importance of
macro structural investigation has not decreased; on the contrary, these methods are in the state of
their revival. One of evident reasons for it is the fact, that the results of macro structural
examinations and the conclusions drawn from them are in the closest relation with the parameters of
technology, reflect their changes, and the deviations from the specified values. It is expedient from
time to time to check the methods proved earlier suitable for macro structural investigation,
possibly to develop and implement new methods. We have to take in account that the methods now
widely applied were developed when the technology, composition, type and quantity of pollutants
were still basically different from those of the present. We mention as an example that in the
fundamental work of George F. Vander Voort published in 1984 the examinations of
macrostructure of continuously cast semi products occupied hardly one to two pages, while
nowadays they produce about 90% of the annual 1.1 billion tonne steel quantity in continuous
casting plants, thus the decisive proportion of continuously cast semi products examination can
hardly be questioned. Taking in consideration the above points of view, in the frame of a
consortium work we examined the macrostructure of samples taken from bloom slabs cast on
vertical continuous casting machine from nine consciously chosen charges, with methods known
from the literature or personal information.
Some Study on Cooling Capacity Analysis of Walking Bar Indirect Cooling Type Curvilinear Continuous Casting Machine and Quality of the Slab
