在苏联所生产的大部分沸腾钢钢锭采用化学封顶浇注。最流行的工艺是在钢锭模浇满后,立即在钢水面上添加铝或者其它脱氧剂。钢锭的结构,缩孔的位置和形状,偏析带以及成品的低倍缺陷在很大程度上取决于钢锭头部的形状和结构——致密金属的“桥”。“桥”的厚度与化学封顶的工艺,即钢的脱氧度有关。研究“桥”的结构,对于完全的查明钢锭的化学 Most of the boiled steel ingots produced in the Soviet Union are top-coated by chemical capping. The most popular process is to add aluminum or other deoxidizer to the molten steel immediately after pouring of the ingot mold. The structure of the ingot, the location and shape of the crater, the segregation zone, and the low magnification of the finished product depend largely on the shape and structure of the head of the ingot - a “dense metal” bridge. The thickness of the “bridge” is related to the chemical capping process, the degree of deoxidation of the steel. Study the “bridge” structure, for the complete identification of the chemical ingot