Because the thickness of flat bloom is thin. In theory

there is no problem of narrow - face bulging. But in real production this happens all the time. Through the research and analysis

it is found that when the spacing between the wide surface clamping roller is too large

A bulge will appear. When the casting billet of the drum is passed through the next pair of wide-face clamping rolls

due to the torsion deformation of the blank shell

it can cause obvious bulge in narrow side. When the high carbon steel is casting

if the secondary cooling ratio is not timely

it is possible to cause the bulging in narrow surface of the flat bloom and produce the middle crack in the triangle area. By analyzing the problems of two steel mills

the corresponding solutions are given

which can serve as a reference for the design and maintenance of similar continuous casting machines.