Flankwearand craterwear

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Types of toolwear

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[8] P.A. Dearnley and E.M. Trent: Metals Technol. Vol. 9(1982), p.60.

[2] E.O. Ezugwu and Z.M. Wang: J. Mater. Process. Technol. Vol. 68(1997), p.262.

Flankwear

[9] Information on http: /www. pvd-coatings. co. uk/tialn-coating. htm.

Craterwear

[6] H.Z. Zhang, W.W. Ming, M. Chen, B. Han, B. Rong, G. Liu and Y.S. Zhang: Key Eng. Mater. Vol. 431-432(2010), p.547.

Flankwearin cutting tool

[1] C.R. Dandekar, Y.C. Shin and J. Barnes: Int. J. Mach. Tool Manu. Vol. 50(2010), p.174.

As a typical high strength material, titanium alloy Ti-6Al-2Sn-4Zr- 2Mo-0.1Si (TA19) is used to manufacturing the compressor power-brake of aircraft engine and the aircraft skin. All the machining experiments were carried out on a CNC-milling center under the stable conditions of cutting speed, feed rate, and depth of cut. The performance and wear mechanisms of coated- and uncoated carbide tools have been investigated in this paper to evaluate the machinability of TA19 in face milling. The three tools used were PVD-TiN+TiAlN, CVD-TiN+Al2O3+TiCN and uncoated carbide inserts. The results indicated that PVD coating had the best performance than other tool materials in milling titanium alloy TA19, and the cutting force and the wear value were the smallest than that for CVD-coated and uncoated tools. The failure types of PVD-, CVD- and uncoated inserts were the crater wear and micro tipping; the crater wear and tipping; tipping. Abrasive wear and adherent wear were the predominant mechanism of PVD-TiN+TiAlN carbide insert in face milling TA19 alloy. For CVD- and uncoated carbide, adherent wear was predominant.

Sandvikinsert wearchart

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[7] Y.Q. Feng, W.Q. Li, Sh.L. Zhang, H.L. Tao, Zh. Zhang and X.X. Tuo: Rare Metal Mat Eng. (in Chinese) Vol. 34(2005), p.529.

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