Abstract:

The necessity of determining the energy partition to workpiece in grinding process for the mechanism of grinding GH4169 superalloy was presented. But the existing equations had limitations when they were used to determine the energy partition in grinding GH4169 superalloy process. A method that combined experiment with FEM for determining energy partition was proposed, and the energy partition to workpiece in grinding GH4169 superalloy process with single alundum wheels was determined. The correlation between energy partition and grinding process parameters was analysed and described by an empirical equation. The results indicate that the energy partition to workpiece under the process conditions of this work ranges from 25% to 62%，and that the relationship between the energy partition to workpiece and grinding process parameters can be expressed by a exponential function equation.

Key words: grinding, superalloy, energy partition, single alundum wheel

摘要：

指出了确定磨削能传入工件比例对研究GH4169合金磨削机理的必要性，分析了已有理论计算公式确定磨削GH4169合金过程中磨削能传入工件比例的局限性。设计和实施了试验与有限元分析相结合的方法，对单晶刚玉砂轮磨削GH4169合金过程中磨削能传入工件的比例进行了确定，并进一步对该比例与磨削工艺参数之间的关系进行了研究，拟合了关系方程。结果表明，在试验工艺条件下，磨削能传入工件比例在25%~62%之间，且该比例与工艺参数之间的关系可用指数函数形式的方程描述。

关键词: 磨削, 高温合金, 能量分配, 单晶刚玉砂轮