与方型断面钢锭一样,扁锭的传搁时间表也可以用计算方法制定,但基本方程要用二维导热方程,故计算量较一维显著增多。文中介绍了计算用基本方程和置换为显式差分格式的各差分方程,举例说明计算步骤及所得数据的实用价值。计算结果可以用来制定钢锭传搁时间表,确定钢锭凝固率,凝固层厚度以及钢锭含有的凝固潜热量,确定装炉热锭载热情况,并在此基础上制定扁锭的合理加热制度和加热时间等。计算还可用于均热炉计算机控制扁锉冷却数字模型的离线解析计算。方锭是扁锭的一个特例,因此,扁锭计算完全适用于方锭。 As with the square section steel ingot, the spread time schedule of the slab can also be calculated using the method of calculation, but the two-dimensional heat conduction equation is used for the basic equation, so the calculated amount increases significantly compared with one dimension. This paper introduces the calculation of the basic equations and the replacement of the explicit difference format of the difference equation, an example of calculation steps and the practical value of the data obtained. The calculation results can be used to set the schedule of ingot release, to determine the solidification rate of the ingot, the thickness of the solidified layer and the amount of latent heat of solidification contained in the ingot, and to determine the heat load of the ingot. Based on this, Heating time and so on. The calculation can also be used for the offline analytical calculation of a computer controlled flat file cooling digital model for a soaking furnace. A square ingot is a special case of a slab, therefore, the calculation of a slab is perfectly suitable for a square ingot.