刘刚, 孟海燕. 2197铝锂合金碱性化铣加工工艺及其影响因素研究[J]. 南昌航空大学学报(自然科学版), 2014, 28(3): 64-70. DOI: 10.3969/j.issn.1001-4926.2014.03.011
引用本文: 刘刚, 孟海燕. 2197铝锂合金碱性化铣加工工艺及其影响因素研究[J]. 南昌航空大学学报(自然科学版), 2014, 28(3): 64-70. DOI: 10.3969/j.issn.1001-4926.2014.03.011
LIU Gang, MENG Hai-yan. 2197Al-Li Alloy Alkalization Milling Technology and Influence Factors[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(3): 64-70. DOI: 10.3969/j.issn.1001-4926.2014.03.011
Citation: LIU Gang, MENG Hai-yan. 2197Al-Li Alloy Alkalization Milling Technology and Influence Factors[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(3): 64-70. DOI: 10.3969/j.issn.1001-4926.2014.03.011

2197铝锂合金碱性化铣加工工艺及其影响因素研究

2197Al-Li Alloy Alkalization Milling Technology and Influence Factors

  • 摘要: 通过正交试验筛选了适合2197铝锂合金化学铣切加工的槽液配方,探讨了化学铣切加工速率、表面粗糙度及浸蚀比的主要影响因素。研究结果表明:化铣液的配比为NaOH 250g/L、Na2S 30g/L、TEA 40g/L、Al3+10g/L时能获得较好的表面加工性能;化铣速率取决于NaOH浓度、温度及Al3+浓度,随着NaOH浓度增加和温度的升高,化铣速率均加快;而Al3+浓度增加,化铣速率降低,当化铣液中Al3+浓度超过120g/L时,化铣液失效;在化铣液中适量添加TEA、Na2S或Al3+均能有效降低试样表面粗糙度;添加一定量的Na2S和Al3+有利于化铣过程的浸蚀比控制;2197铝锂合金适宜化铣温度为90~95℃。

     

    Abstract: In this paper,the solution formula for 2197Al-Li alloy was determined by orthogonal experiments,and the major influencing factors of milling ratio, surface roughness, ratio of milling width and depth were investigated. The major ingredients include NaOH 250g/L、Na2S 30g/L、TEA 40g/L and Al3+10g/L can get better performance of surface processing. Milling ratio depends on the concentration of NaOH、Al3+ and temperature. And it is improved with the increasing NaOH concentration and temperature. However, Al3+concentration increased, the milling speed reduced. When the concentration of Al3+ more than 120g/L, the milling solution will failed. Adding TEA, Na2S or Al3+ in milling solution can effectively reduce the sample surface roughness. Adding a certain amount of Na2S and Al3+ is advantageous to the milling process of etching ratio control. The suitable milling temperature of 2197 Al-Li alloy are ranged from 90℃ to 95℃.

     

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