(山東工業(yè)大學材料科學與工程學院，濟南250061)
摘 要: 研究了鋁熔體除氫時的除氣和再吸氣過程。實驗結(jié)果表明：鋁合金熔體除氫后，靜置一定時間才能達到最佳除氫效果，靜置時間和熔體表面狀態(tài)有關：除氫后立即扒去表面浮渣，靜置5～6 min為最佳；帶渣靜置，一般為10～12min。 此基礎上，建立了鋁熔體中氫的動力學模型，并對除氫和再吸氫過程進行了理論分析。
關鍵字: 鋁熔體；除氫；動力學
（College of Material Science and Engineering, Shandong University of Technology, Ji'nan 250061, P.R.China）
Abstract:The courses of degassing and regassing of degassing hydrogen in aluminum melt were studied. The experimental results show that holding is necessary after the melt is treated and there exists the best holding time which is related to the surface conditions of the melt. If inclusions are eliminated immediately from the melt surface, the melt needs to be held about 5～6min; if the melt is held with inclusions in the melt surface, the best holding time is about 10～12min. Based on the results, the mathematical modeling of degassing in aluminum melt has been established and the mechanism of degassing and regassing has been analyzed.
Key words: aluminum melt; degassing hydrogen; kinetics
