凹型底板是改善钢锭尾部形状的良好措施,可提高钢锭的成坯率。这项新技术在国外早巳应用,我国在七十年代末期开始试验,八十年代初期在生产上正式使用。第三炼钢厂试验凹型底板从1979年开始筹备。在试验过程中考虑到整模吊车的扬程,分两种形式进行,一种是单层凹型底板,另一种是双层凹型底板。 The concave bottom plate is a good measure to improve the shape of the tail of the ingot, which can improve the ingrowing rate of ingot. This new technology has already been applied abroad as early as the beginning of the seventies in China, and officially started its production in the early 1980s. The third steel mill test concave base plate from 1979 to prepare. In the test process to take into account the head of the whole model crane, divided into two forms, one is a single concave floor, the other is a double concave floor.