Abstract
Aiming at the problem that the complex parts are difficult to process precisely, a flexible processing method, abrasive flow technology, is proposed. Based on the FLUENT software, a realizable k-ε model was adopted and a Z-tube was used as the research object for numerical analysis. Parameters such as turbulence intensity, turbulent kinetic energy, and flow field pressure under different inlet pressures were simulated and discussed. The simulation results show that with the increase of inlet pressure, the turbulence intensity, turbulent kinetic energy and fluid pressure also increase, and the turbulent effect of the fluid is more obvious, which indicates that the processing effect of the abrasive flow will be better, and the final experiment will be performed. The experimental results are consistent with the simulation results, and the accuracy of the numerical simulation is proved. The abrasive grain flow processing technology is effectively verified.
Highlights
Abrasive flow processing technology is a new surface processing technology, which can achieve rounding, deburring, reducing residual stress, etc
Li Chen et al [6] applied the Preston equation to carry out force analysis of solid particles in the flow field, and analyzed the polishing mechanism of the abrasive flow and verified the use of complex parts in automobiles
The results show that the abrasive flow can remove the damaged surface produced by EDM and improve greatly the surface quality
Summary
Abrasive flow processing technology is a new surface processing technology, which can achieve rounding, deburring, reducing residual stress, etc. The basic working principle is to use the numerous hard particles in the liquid and flow to the processing surface under the action of external pressure. Li Chen et al [6] applied the Preston equation to carry out force analysis of solid particles in the flow field, and analyzed the polishing mechanism of the abrasive flow and verified the use of complex parts in automobiles. Li Junye et al [7, 8] used the common rail tube as the research object to study the effect of particle volume fraction and particle size on the polishing effect of the abrasive flow. The results show that the abrasive flow can remove the damaged surface produced by EDM and improve greatly the surface quality
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