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. At the same time, with steady friction coefficient, the micro-WEDM surface has better proformance than that of superfinishing grinding machining surface. Key words: micro wire electrical discharge machining; lubrication; surface topography; friction coefficient 随着微机电系统的深入发展和广泛应用,微细电火花线切割加工技术(MWEDM)越来越受到人们的重视[1].MWEDM以其较高的加工精度,加工效率和性价比用来加工微小复杂的三维零件,已经成为微细加工领域重要的加工方法[2].零件表面的微观形貌在很大程度上影响着零件的摩擦磨损性能.由于......
J. Cent. South Univ. (2018) 25: 3075-3084 DOI: https://doi.org/10.1007/s11771-018-3975-5 Microstructure and mechanical properties of dissimilar pinless friction stir spot welded 2A12 aluminum alloy... Processing, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi’an 710072, China; 2. China FSW Center, Beijing 100024, China Central South University......
. Results showed that with load increasing, wear loss and coefficient of friction increased. With sliding speed going up, the surface temperature of sample made the rate of the producing of oxidation layer increase, while wear loss and coefficient of friction decreased. With the sliding distance increasing, coefficient of friction increased because the adhesive wear mechanism occurred......
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J. Cent. South Univ. (2016) 23: 1847-1857 DOI: 10.1007/s11771-016-3239-1 Parametric optimization of friction stir welding process of age hardenable aluminum alloys-ANFIS modeling D. Vijayan1, V...) and the adaptive neuro-fuzzy inference system (ANFIS) to enhance the tensile properties, including the ultimate tensile strength and the tensile elongation, of friction stir welded age hardenable AA6061......
process. The results show that the friction coefficient mainly experiences two steady stages. The first steady stage corresponds to the Coulomb friction with material abrasion. The second steady stage corresponds to the stick friction with fully plastic flow. Moreover, the increasing rates of axial displacement, temperature and friction coefficient are obviously enhanced with the increase......