[Introduction] Interference fit problem occurred during installation of a cylinder part, mainly due to the ununiform thickness of the hard anodic oxide film inside the cavity and the too thick film at the top of inner cavity. [Method] A tooling for adding an auxiliary electrode inside the cavity of cylinder part was designed and fabricated. The auxiliary electrode was improved based on the anodization testing and finite element analysis. [Result] The hard anodic oxide film inside the cavity of the cylinder part was uniform with a required thickness ranging from 10 to 20 μm after installation of the electrode-adding tooling. [Conclusion] The use of a suitable electrode-adding tooling during hard anodization is conducive to control the thickness of anodic oxide film inside the cavity of cylinder part, improving the uniformity of film thickness.
关键词
缸体类零件/内腔/硬质阳极氧化/辅助电极/膜厚均匀性/电力线分布/有限元分析
Key words
cylinder part/inner cavity/hard anodizing/auxiliary electrode/film thickness uniformity/power line distribution/finite element analysis
维普
万方数据