GH4169DA磨削表面完整性控制工艺域优选方法研究
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作者单位:

1.西北工业大学动力与能源学院;2.西北工业大学机电学院

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中图分类号:

TG580.6

基金项目:

国家自然科学基金 (51905442);国家科技重大专项(关键高温合金重要转动构件精密磨削抛光加工表面完整性控制基础研究)


Research on the Optimization Methods of Surface Integrity Control Technology Region in Grinding Superalloy GH4169DA
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1.School of Power and Energy, Northwestern Polytechnical University;2.School of Mechanical Engineering, Northwestern Polytechnical University

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    摘要:

    研究高温合金GH4169DA磨削表面完整性控制工艺域优选方法,通过外圆磨削正交试验,建立了磨削表面完整性特征对磨削工艺参数的灵敏度和相对灵敏度经验公式,获得了磨削参数稳定域和非稳定域,结合极差分析方法获得了不同磨削工艺参数对表面完整性特征的影响曲线,优选出表面完整性控制工艺域。结果表明:外圆磨削时,表面粗糙度和表面残余应力对工件速度的变化最为敏感,表面显微硬度对砂轮速度的变化最为敏感。获得了保障稳定表面完整性的磨削工艺参数优选区间:工件速度vw (12~22m/min),径向进给ap (0.005~0.01mm),砂轮速度vs(20~25m/s),为优化高温合金材料磨削工艺以及进行表面完整性控制研究提供理论方法和实验依据。

    Abstract:

    Research on the optimization methods of Surface integrity control technology region of grinding superalloy GH4169DA. Through the orthogonal experiment of cylindrical grinding, the experience formula of surface integrity characteristic of the grinding process parameter sensitivity and relative sensitivity are built,the process parameter stability region and instability region are acquired. Using the extreme difference analysis method facing the orthogonal experiment, the influencing curves of process parameters on surface integrity characteristic are obtained, Surface integrity control technology region is achieved. Results show that the surface roughness and the surface residual stress are most sensitive to the variety of the workpiece speed, the surface microhardness is most sensitive to the variety of the wheel speed in cylindrical grinding. The grinding process parameter optimizing interval of guarantee a stable surface integrity is acquired: the workpiece speed vw 12~22m/min, the radial feed ap 0.005~0.01mm, the wheel speed vs 20~25m/s, in this optimizing interval, the surface roughness and the surface microhardness are stability, and the surface residual compressive stress is great. The theoretical method and the test datum can be used for the surface integrity control of superalloy.

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黄新春,史恺宁. GH4169DA磨削表面完整性控制工艺域优选方法研究[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-12-24
  • 最后修改日期:2022-04-15
  • 录用日期:2022-04-30
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