熔铝净化用石墨转子的失效及其机理分析

Failure and Mechanism Analysis of Graphite Rotors for Aluminum Melting Purification

旋转喷头精炼法是目前国内外应用最广泛的铝熔体净化技术,在变形铝及铝合金高质量发展的需求下,熔铸生产对其关键部件石墨转子提出了更高质量和长寿命的要求。本课题研究了石墨转子在使用过程中其上端部位组织疏松的失效机理,并提出了改善措施。经改善后的石墨转子平均使用寿命提高了1倍,减少了更换频次,提高了经济效益。

The rotary nozzle refining method is currently the most widely used aluminum melt purification technology both domestically and internationally.With the demand for high-quality development of deformed aluminum and aluminum alloys,casting production has put forward higher quality and longer service life requirements for its key component graphite rotor.This study investigates the failure influencing factors of loose tissue at the upper end of graphite rotors during use,and proposes improvement measures.The improved graphite rotor has doubled its average service life,reduced replacement frequency,and increased economic benefits.