由南京工学院和南京1014所共同研制成功的铝合金无毒精炼剂是以硝酸钠和石墨粉为主要成分,在铝合金熔化温度下,产生氮气和碳氧化合物气体而起到精炼除气的作用.这种熔剂精炼时不产生有毒或刺激性气体,故称之为“无毒精炼熔剂”.目前主要用于铸造铝硅及铝镁合金. Developed jointly by Nanjing Institute of Technology and Nanjing 1014, the non-toxic aluminum refining agent is based on sodium nitrate and graphite powder as the main components. At the melting temperature of the aluminum alloy, nitrogen and carbon oxide gas are generated to refine the degassing This flux refining does not produce toxic or irritating gases, it is called “non-toxic refining flux.” Currently mainly used for casting aluminum and aluminum and magnesium alloy.