The paper written by “Auto Electric Tail Spring Electric Fracture Fracture Analysis” paper written by our team was successfully published in the “Metal Processing” hosted by the Institute of Machinery Industry Information in the “Metal Machining” 2022 issue 11/wp-content/uploads/2024/10/20221105_1712301.pdf
Abstract: The ultra-high strength electric tail spring produced by a spring factory broke during the compression process after electrophoresis processing. The reasons for its fracture were comprehensively analyzed by fracture morphology analysis, chemical composition analysis, metallographic structure detection, and microhardness detection. The results show that hydrogen accumulates on the surface of the electric tail spring during the electrophoresis process, causing local embrittlement of the spring surface. During the compression test after electrophoresis, stress concentration occurs on the spring surface, forming a crack source at the surface embrittlement and extending the fracture.
Keywords: electric tail spring; fracture;electrophoresis;hydrogen-induced fracture;failure analysis
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