论文部分内容阅读
前言非金属夹杂物缺陷,严重影响电站转子锻件的质量。多年来,它是中心孔检查和超声波探伤中出现为技术条件所不允许的缺陷的主要原因。钢水进行真空碳脱氧处理,由于它消除了脱氧产物残留于钢中形成非金属夹杂物的来源,并且钢液在处理过程中产生激烈沸腾,非金属夹杂物由于上浮而从钢中排除的条件得以改善。这样,真空碳脱氧处理为提高钢液纯洁度,减少夹杂物缺陷提供了有利条件;另一方
Preface Non-metallic inclusions defects, seriously affecting the quality of the rotor forgings. For years, it has been a major cause of defects in center hole inspections and ultrasonic flaw detection that are not allowed by technical conditions. Vacuum carbon deoxidation treatment of molten steel, because it eliminates the deoxidation products remain in the steel to form a source of non-metallic inclusions, and molten steel in the process of generating intense boiling, non-metallic inclusions due to floating conditions excluded from the steel improve. In this way, the vacuum carbon deoxidation treatment to improve the purity of molten steel to reduce the inclusion defects provide favorable conditions; the other