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在电解加工中,NaNO_3等钝性电解液的采用已成为提高钢质零件加工精度的主要手段。但钝性电解液的使用效果与其工作条件有密切关系。如使用不当,不仅去除速度较低,且其表面完整性较差,难于满足工艺要求。近十年来,人们逐步认识到在钝性电解液中加工的一些工艺特征与其阳极过程有着内在的联系。这些阳极过程的变化影响着电解加工的去除速度、加工精度和表面质量。为此,掌握这些阳极过程的变化规律,以便在提高加工精度的同时,改善表面质量和提高去除速度,就成为当前电解加工的主要研究课题。本文采用电化学测试、电子能谱测试和椭圆测试等方法,对炭素钢在钝性和活性电解液中的阳极过程进行了初步探索。
In electrolytic processing, the use of blunt electrolyte such as NaNO_3 has become the main means to improve the machining accuracy of steel parts. However, the use of blunt electrolyte and its working conditions are closely related. If used improperly, not only the removal rate is low, and its surface integrity is poor, it is difficult to meet the process requirements. In the past ten years, people gradually realized that some process characteristics of processing in the passive electrolyte have an inherent relationship with the anode process. Changes in these anodic processes affect the removal rate, processing accuracy, and surface quality of the electrolytic process. To this end, master these changes in the anodic process, in order to improve the processing accuracy, while improving the surface quality and improve the removal rate, has become the current electrolytic processing of the main research topics. In this paper, electrochemical methods, electron spectroscopy and ellipsometry were used to investigate the anodic process of carbon steel in passive and active electrolyte.