Investigation into Different Tool Coating performance While Turning Al6061

Abstract:

Cutting tool material technology in recent years has made great strides with substantial improvements in their strength, toughness, and wears resistance, which are designed to increase productivity, improve tool selection and aid to decrease costs and promote machining quality. This investigation presents the effect of various cutting speeds in turning of Al6061 with respect to different coatings. Experiments carried out under orthogonal dry cutting, and two different cutting speeds applied which were 250, 500 m/min. Feed rate and depth of cut kept constant respectively at 0.05 mm/rev and 0.5 mm in experiments. Three different carbide cutting tools have been used namely CVD tri-phase multilayer TiC/TiCN/TiN coated, PVD TiN coated and CVD TiC/Al2O3 coated. Tool performance was determined with respect to tool wear and surface finish in tests. Results obtained that tri-phase coated illustrated longest tool life, however best surface finish achieved by TiN coated tool. In addition adhered material which mainly formed in CVD tri-phase TiC/TiCN/TiN and TiC/Al2O3 coated tools, at higher cutting speed deteriorated surface finish in comparison to lower cutting speed.

• Periodical: Advanced Materials Research (Volume 566)
• Pages: 443-447
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.566.443
• Online since: September 2012
• Authors: Ali Davoudinejad, Sina Alizadeh Ashrafi, Mohsen Marani Barzani
• Keywords: Abrasive Wear, Chipping, CVD Coating, PVD Coating, Surface Roughness (SR), Tool Wear

References

[1] E. M. Trent. P. K. Wright. Metal cutting. (Butterworth–Heinemann publication, United States of America 2000).

[2] F. Klocke, G. Eisenblatter, Dry cutting, CIRP Ann. 46 (2) (1997) 519–526.

[3] G. Byrne, D. Dornfeld, B. Denkena, Advancing cutting technology, CIRP Ann. 52 (2) (2003) 1–25.

DOI: 10.1016/s0007-8506(07)60200-5

[4] R. Horsfall, R. Fontana, TiAlN coatings beat the heat, Cutting Tool Eng. February (1993) 37-42.

[5] J. Paulo Davim: Machining of hard material (Springer London Dordrecht Heidelberg New York 2011).

[6] M. Sokovi´c, J. Mikula, L.A. Dobrza´nski, J. Kopaˇc, L. Kose ˇ c, P. Panjan, J. Madejski, A. Piech. Cutting properties of the Al2O3 + SiC(w) based tool ceramic reinforced with the PVD and CVD wear resistant coatings. Journal of Materials Processing Technology 164–165 (2005).

DOI: 10.1016/j.jmatprotec.2005.02.071

[7] L.A. Dobrza´nski, Comparison of the structure and properties of the PVD and CVD coatings deposited on nitride tool ceramics, Journal of Materials Processing Technology 164–165 (2005) 832–842.

DOI: 10.1016/j.jmatprotec.2005.02.094

[8] L.A. Dobrzanski, J. Mikula. Structure and properties of PVD and CVD coated Al2O3 + TiC mixed oxide tool ceramics for dry on high speed cutting processes. Journal of materials processing technology 164-165 (2005) 822-831.

DOI: 10.1016/j.jmatprotec.2005.02.089

[9] K. Aslantas, I. Ucun, A. Cicek. Tool life and wear mechanism of coated and uncoated Al2O3/TiCN mixed ceramic tools in turning hardened alloy steel. Wear 274-275 (2011) 442-451.

DOI: 10.1016/j.wear.2011.11.010

[10] Joseph R. Davis et al, Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, Volume 2, Metals Handbook , 10th Edition (1990).

[11] Quan Yanming, Zhou Zehua, Tool wear and its mechanism for cutting Sic particle- reinforced aluminum matrix composites, journal of materials processing technology, 100(2000) 194-199.

DOI: 10.1016/s0924-0136(99)00405-7

[12] Thomas childs, katsuhiro Maekawa, Toshiyuki Obikawa, Yasuo Yamane. Metal machining theory and applications (Arnold Publications, London 2000).