Processing of WC-Co Cemented Carbide Ball by EDR and RDP Lapping Modes

Abstract:

In order to get high precision balls used in oil exactor, Eccentric dual-rotating (EDR) V-groove lapping mode and Rotated dual-plates (RDP) lapping mode are applied for the batch processing of WC-Co cemented carbide balls of Φ35mm. After comparing two innovated modes, firstly EDR V-groove lapping mode is used in rough lapping stage for high efficiency, and then semi-finishing lapping stage, finishing lapping stage and polishing stage are carried out by RDP lapping mode. Through changing the processing parameters legitimately, including abrasive grain, adjustable rotating velocity and load, the rational course and parameters are defined, and WC-Co cemented carbide balls of Φ35mm satisfy the end products’ demand which means the sphericity is less than 1μm and the roughness of surface (Ra) is better than 50nm, so these balls can be applied in one-way hydraulic value used in oil exactor.

• Periodical: Advanced Materials Research (Volumes 76-78)
• Pages: 258-263
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.76-78.258
• Online since: June 2009
• Authors: Ju Long Yuan, Fan Yang, Zhi Wei Wang, Ke Feng Tang, Jia Jie Chen
• Keywords: Batch Conformity, Eccentric Dual-Rotating V-Groove Lapping Mode, Rotated Dual-Plates Lapping Mode, Sphericity, WC-Co Cemented Carbide Ball

References

[1] N. U mehara, T. Kirtane, R. Gerlicka, V.K. Jain, R. Komanduri. ：Int. J. Mach. Manuf. Vol. 46 (2006), p.151.

[2] Z.W. Wang: Fundamental Research on the Lapping Technology of Precise Balls [D]. Hangzhou: Zhejiang University of Technology, P.R. China (2005).

[3] J Kang and M Hadfield: Eng. Manuf. Vol. 219(2005), p.493.

[4] N. Umehara, K. Kato. Trans: Wear, Vol. 200 (1996), p.148.

[5] T.H.C. Childs, D.J. Moss: Wear, Vol. 249 (2001), p.509.

[6] X.L. Yu, Y.B. Wang, Z.K. Suo: Tsinghua Univ (Sci & Tech), Vol. 43 (2003), p.632.

[7] J.L. Yuan, Z.W. Wang, B.H. Lv et al: Key Eng. Mater. Vol. 304-305 (2006), p.300.

[8] J.L. Yuan, L.N. Chen, P. Zhao, M. Chang, T. Xing, B.H. Lv: Key Eng. Materi. Vol. 259 (2004), p.195.

[9] B.H. Lv, J.L. Yuan, Y.X. Yao, Z.W. Wang, B. C. Tao, J. J Zhen, P. Zhao: Key Eng. Mater. Vol. 304-305 (2006), p.403.

[10] C.Z. Ren, T.Y. Wang, X.M. Jin, H. Xu: Mater. Process Technol. 129 (2002), p.446.

[11] J Kang and M Hadfield: Eng. Manuf. Volume 258 (2005), p.2.