Abstract
In order to avoid the corrosion of 7 series aircraft aluminum alloy structural parts in the process of NC machining. For GB6144 and JB7453, in the process of 7 series alloy aluminum aircraft structural parts NC machining, the evaluation of the anti-corrosion performance of the water-based cutting fluid used in the evaluation of the material pertinence is not strong, the time length index is insufficient, and the galvanic corrosion performance is lack. Based on the analysis of the mechanism of corrosion by combining the processing conditions and processing environment of 7 series alloy aluminum aircraft structural parts, a semi immersion corrosion test was designed to compare the electrochemical corrosion resistance of four water-based synthetic cutting fluids. The test can evaluate and compare the anti-corrosion performance of different cutting fluids for 7 series alloy aluminum aircraft structure, and provide guidance for the optimization and management of 7 series alloy aluminum aircraft structure.
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