论文部分内容阅读
一、钢液真空处理技术的发展及评价为了使平炉、转炉、电炉中熔炼出来的钢液免受大气污染,防止氢、氮、氧等气体存在钢中产生钢材缺陷,把钢液置于真空中进行脱气,早在十九世纪未就已出现。但当时工业水平较低,抽气设备能力有限,所以直到二次世界大战后才逐渐走向工业化,从而解决了炼钢操作中不易解决的脱氢问题。这种真空脱气方法实际上就是目前炉外脱气精炼方法的一种原始技术。近年来,为了使钢液组织均匀化和提高精炼效果,确保浇注温度,又采用了搅拌和加热技术。因此,目前的真空脱气方法已经不仅仅是单纯的脱气,而是把它做为制取夹杂和
First, the development and evaluation of the molten steel vacuum processing technology In order to flat furnace, converter, electric furnace out of molten steel from the air pollution, to prevent the presence of hydrogen, nitrogen, oxygen and other gases produced steel defects in the steel, the molten steel placed in a vacuum In the degassing, as early as the 19th century has not appeared. However, at that time, the industrial level was rather low and the capacity of the extraction equipment was limited. Therefore, it was not until the Second World War that the industrialization gradually took place, thus solving the problem of dehydrogenation which was not easily solved in steelmaking operations. This vacuum degassing method is actually an original technique of out-of-furnace degassing refining method. In recent years, in order to homogenize the molten steel and improve the refining effect, to ensure the pouring temperature, but also the use of mixing and heating technology. Therefore, the current vacuum degassing method has been more than pure degassing,