Experimental Study on Two- step Synthesis of Vanadium- aluminium Alloy
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摘要: 针对影响两步法冶炼钒铝合金过程的主要因素进行了研究,同时对两步法产品进行了金相检测分析。结果表明:控制合适的炉外法单位炉料热量、真空精炼中出炉时过热度等可使钒回收率和产品表观质量得到较大提高。铝热冶炼工序合适的单位炉料热量为3 250 kJ/kg,真空精炼中最佳出炉过热度为30℃,该条件下得到的钒铝合金全元素化学成分满足GfE公司标准要求。Abstract: Main factors affecting vanadium-aluminum alloy smelting by two-step process were studied,and the products were analyzed through metallographic inspection.The results show that vanadium yield and apparent quality of the products can be noticeably improved by applying appropriate unit burden heat and superheat degree during tapping in the process of vacuum refining.It is found that the appropriate unit burden heat for aluminum heat smelting process is 3 250 kJ/kg,and the best degree of superheat for vacuum refining is 30 ℃.All the chemical compositions of the vanadium-aluminium alloy so obtained can meet the standards of GfE.
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Key words:
- vanadium-aluminium alloy /
- two-step process /
- vanadium yield /
- unit burden heat /
- superheat degree
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