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融熔铝的质量应包括氢含量、钠含量和夹杂物含量的高低.为了测量氢,几年前人们已经对熔化炉中的铝采用Straube-Pfeiffer真空气体试验和Aluschmelz试验装置[1,2].但是液体金属经过滤之后,其中形成气泡的核心数目减少了,尽管有的方法做了改进[4],但它们的灵敏度仍有所下降[2,3].人们常常采用固态提取的方法,这种方法的优点是允许从液体和固体中取样进行分析.真空固态提取的方法由Ransley等提出[5],这是一种为人们所公认的在实验室条件下测量含氢量的技术.
The quality of the molten aluminum should include the hydrogen content, the sodium content and the content of the inclusions.In order to measure the hydrogen, several years ago people had used Straube-Pfeiffer vacuum gas test and Aluschmelz test device for the aluminum in the melting furnace [1,2] However, after the liquid metal is filtered, the number of bubbles forming the core is reduced, and although some methods have been improved [4], their sensitivity is still decreased.2,3 People often adopt the method of solid-state extraction, The advantage of this method is that it permits sampling from both liquids and solids for analysis.The vacuum solid state extraction method was proposed by Ransley et al. [5], a well-established technique for measuring hydrogen content in laboratory conditions.