连续铸挤生产Al-Sr中间合金线材工艺研究

Study on the Continuous Cast Extrusion Process for Producing Al-Sr Master Alloy Rod

采用连续铸挤工艺生产Al-Sr中间合金线材,对Al-Sr中间合金质量的影响因素:合金化工艺、铸挤轮速度、合金液浇注温度、冷却水流量等进行研究。试验表明,采用合理的合金化工艺和N2精炼除气技术,在铸挤轮速度为15r/min,冷却水流量5L/min,合金液浇注温度为780～800℃的情况下,Al-Sr中间合金线材表面质量好,气孔少,Al4Sr晶粒细小均匀,呈弥散分布。

Continuous casting and extrusion(CASTEX)technology is adopted to produce Al-Sr master alloy rod.The factors affecting the quality of Al-Sr master alloy-alloying technology-CASTEX wheel velocity-pouring temperature of alloy-and flux of cooling water are studied.Experiments indicate that adopting reasonable alloying technology and degassing technology of N 2 -under the condition of velocity of15r / min-flux of cooling water of5 L/ min-pouring temperature of780-800℃-Al-Sr master alloy rod has good surface quality-less porosities and Al 4 Sr grains are fine and homogeneous and dispersed uniformly.