Theoretical Modeling and Experimental Verification of Surface Roughness in Abrasive Jet Finishing

Abstract:

Based on the modeling and experiments concerning the surface roughness in abrasive jet finishing with grinding wheel as restraint, the effect of abrasive size, abrasive fluid concentration, machining cycle, wheel velocity and carrier fluid on machined surface quality was investigated. Surface grinder M7120 was employed in a jet machining experiment conducted with W18Cr4V and 40Cr materials, profilometer TALYSURF was used to measure the micro geometrical parameters after machining, and SEM was used to observe surface micro-morphology. Experimental results show that with W7 Al2O3 powder at the mass fraction of 10% and antirust lubricating liquid being adopted in jet machining for 20 to 30 cycles, not only high surface shape precision can be kept or obtained, but also defect-free machined surface with the roughness of Ra0.15～1.6µm can be obtained with high efficiency. Experimental observation and experimental results proved that the experimental results agree well with a mechanism-based machining model.

• Periodical: Applied Mechanics and Materials (Volumes 16-19)
• Pages: 450-455
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.16-19.450
• Online since: October 2009
• Authors: Chang He Li, Zhan Rui Liu, Guang Qi Cai
• Keywords: Abrasive Jet, Finishing, Micro-Morphology, Roughness

References

[1] S.Y. Terng and K.Y. Chen: Wear, Vol. 224 (1999), pp.95-105.

[2] C.H. Li and G.Q. Cai: Journal of Northeastern University (Natural Science), Vol. 26 (6) Fig. 5 Effect of number of cycles on surface roughness percentage improvement △Ra% Fig. 6 Effect of media flow speed on △R value (2005).

[3] C.H. Li, G.Q. Cai. and S.X. Yuan: Transactions of the Chinese Society for Agricultural Machinery, Vol. 36 (11) (2005), pp.132-135. (In Chinese).

[4] K. Mitjan and J. Said: Wear, Vol. 255 (2003), pp.669-676.

[5] C.H. Li, G.Q. Cai, Q. Li and et al.: China Mechanical Engineering, Vol. 16 (23) (2005), pp.2116-2120.

[6] H.R. Ch, A.N. Y., S. Chandrasekar and et al.: Wear, Vol. 162-164 (1993), pp.246-257.

[7] M. Buijs and K.H. K: Wear, Vol. 166 (1993), pp.237-245.

[8] C.H. Li, G.Q. Cai. and S.C. Xiu: Key Engineering Materials, Vol. 329 (2007), pp.527-532.

[9] Y. Ueharaa, M. Wakudab and Y. Yamauchic: Journal of the European Ceramic Society, Vol. 24 (5) (2004), pp.369-373.

[10] R.I. Trezona, D.N. Allsopp and I.M. Hutchings: Wear, Vol. 225, (1999), pp.205-214.

[11] L. Fang, L. Kong and J.Y. Su: Wear, Vol. 162-164 (1993), pp.782-789.