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内陆钢铁公司首先使用顶部嵌有保温板的钢锭模生产扁钢和棒钢。在扁钢轧制方面,由于用户对各种尺寸的低碳铝脱氧钢的要求不断增加,上小下大顶部嵌有保温板的大型钢锭模在1958年业已开始使用。在以后几年,顶部嵌有保温板的钢锭模又用于棒钢生产。内陆公司不生产管材。在此以后,有关用上小下大顶部嵌有保温板钢锭模注钢课题的研究一直在进行。其主要目的是在不降低或提高钢锭质量和最低成本的条件下改进初轧收得率。目前内陆公司用上小下大顶部嵌有保温板的钢锭模生产下列钢质的棒钢:碳钢(AIST,
Inland steel companies first use steel ingot molds with insulation panels on top to produce flat and rod steel. In flat steel rolling, large steel ingot molds with thermal insulation panels on top and bottom large have started to be used in 1958 because of the increasing number of users of low carbon aluminum deoxidized steel of various sizes. In the next few years, the ingot mold with the insulation board at the top was used for the production of steel bars. Inland companies do not produce pipes. After that, the research on injecting hot steel ingot mold steel with small top and large bottom has been carried out. Its main purpose is to improve the initial rolling yield without reducing or increasing the ingot quality and the lowest cost. At present, inland companies use the ingot molds with insulation panels embedded in the small to large top to produce the following steel bars: carbon steel (AIST,