一、问题的提出随着轧钢工业的日益现代化,国内外轧钢加热炉的尺寸越来越大,跨度超过10米的加热炉在国外已屡见不鲜。七十年代前,我国仅有几座大跨度加热炉,如首钢300小型厂线材加热炉、湘钢线材厂加热炉等。这些加热炉基本上都是仿照苏联五十年代的设计建 First, the question raised With the increasing modernization of the rolling industry, domestic and foreign steel rolling furnace size is growing, more than 10 meters across the furnace has been common in foreign countries. Before the seventies, China only a few large-span furnace, such as Shougang 300 small factory wire furnace, wire steel factory heating furnace and so on. These furnaces are basically modeled on the design and construction of the Soviet Union in the fifties