RU94009606A - METHOD OF CONTINUOUS METAL CASTING - Google Patents

Claims (1)

The invention relates to metallurgy, more specifically, to the continuous casting of metal. The technical effect of using the invention is to improve the quality of continuously cast ingots and metal products from them. This technical effect is achieved by supplying the metal to the mold, drawing an ingot with a variable speed from it, supporting and directing the ingot along the technological axis of the continuous casting plant using rollers mounted on bearing supports, cooling the surface of the ingot using a cooler sprayed by nozzles, and also determine the condition of the rollers and their supports with the help of special devices. In the process of continuous casting, the ingot is dragged at a working speed V _p , the condition of the rollers and their supports is determined. If their efficiency is violated within the section of the length of the technological axis, under the condition l _min ≤ τV _p ≤ l, the speed of the ingot pulling is changed to the values
V _min ≤ (0.92-0.98) l _min / τ
or V _max ≥ (1.1-1.2) l _max / τ;
where V _p is the value of the working speed of the ingot extrusion, m / min; V _{m i n} and V _{m a x} - limit values of the modified speed of extrusion, m / min; l _{m i n} and l _{m a x} are the distances from the metal meniscus in the mold, respectively, to the first and last rollers of the section of the technological axis of a continuous metal casting plant with broken rollers and their supports, m; τ is the time of complete solidification of the ingot, min; (0.92 - 0.98) and (1.1 - 1.2) are empirical coefficients, taking into account the patterns of solidification of continuously cast ingots, dimensionless. The invention is intended for use in continuous casting of metal.