铸钢轧辊采用下注式浇注系统,只对钢水平稳上升有利,整个轧辊的热量分布不利于冒口补缩,小轧辊易出现缩孔、二次缩孔,大轧辊易在下辊颈内浇道在入处附近出现气缩孔缺陷,气缩孔缺陷在下注式浇注系统是很难从根本上解决的。上注式浇注系统符合顺序凝固规律,能从根本上解决上述缺陷,但需采取工艺措施防止产生冲砂、夹砂问题。 Casting steel roll using betting pouring system, only steady rise in steel favorable, the heat distribution of the entire roll is not conducive to feeder riser, small rolls prone to shrinkage, secondary shrinkage, large roll easy in the next roll neck gate In the entrance near the occurrence of shrinkage defects, shrinkage defects in the betting pouring system is difficult to fundamentally solve. On the pouring pouring system in line with the order of solidification law, can fundamentally solve the above shortcomings, but need to take technical measures to prevent red sand, sand problems.