Development of hardening technologies to improve performance of VT20 titanium alloy cutting
https://doi.org/10.17073/0021-3438-2016-3-40-47
Abstract
Technological principles to improve performance of end mills made of R6M5K5 high-speed steel are considered by hardening of their cutting edges with ion nitriding as well as by complex hardening (ion nitriding and application of composite wear-resistant coating based on metal nitrides). A batch of mills was tested for resistance to optimize the nitriding conditions. The optimum hardening mode that provides the highest resistance of end mills in the processing of VT20 titanium alloy was chosen. The compositions of wearresistant coatings were proposed according to the experimental data of their effect on the end mill resistance. The impact of cutting conditions on the hardened tool resistance was determined. A theoretical analysis was performed as regards the results of hardened cutter performance tests.
About the Authors
V. V. Mylnikov
Nizhny Novgorod State Technical University n.a. R.E. Alekseev (NSTU), 603950, N. Novgorod, Minin str., 24.
Russian Federation
Russian Federation
Cand. Sci. (Tech.), associate prof., Department of materials science, technology of materials and heat treatment of metals.
A. I. Pronin
Komsomolsk-on-Amur State Technical University (KASTU), 681013, Komsomolsk-on-Amur, Lenin av., 27.
Russian Federation
Russian Federation
Cand. Sci. (Tech.), associate prof., Department of technology of mechanical engineering.
A. D. Romanov
Nizhny Novgorod State Technical University n.a. R.E. Alekseev (NSTU), 603950, N. Novgorod, Minin str., 24.
Russian Federation
Russian Federation
Head of the laboratory of NSTU
References
1. Ezugwu E.O., Wang Z.M. Titanium alloys and their machinability: A review. J. Mater. Process. Technol. 1997. Vol. 68. P. 262—274.
2. Ginting A., Nouari M. Experimental and numerical studies on the performance of alloyed carbide tool in dry milling of aerospace material. Int. J. Mach. Tools Manuf. 2006. Vol. 46. P. 758—768.
3. Subramanian S.V., Ingle S.S., Kay D.A.R. Design of coatings to minimize tool crater wear. Surf. Coat. Technol. 1993. Vol. 61. P. 293—299.
4. Komanduri R., Turkovich B.F.V. New observations on the mechanism of chip formation when machining titanium alloys. Wear. 1981. Vol. 69. P. 179—188.
5. Nouari M., Makich H. Experimental investigation on the effect of the material microstructure on tool wear when machining hard titanium alloys: Ti—6Al—4V and Ti-555. Int. J. Refract. Metals Hard Mater. 2013. Vol. 41. P. 259—269.
6. Ginting A., Nouari M. Optimal cutting conditions when dry end milling the aeroengine material Ti-6242S. J. Mater. Process. Technol. 2007. Vol. 184. P. 319—324.
7. Krivoukhov V.A., Chubarov L.D. Obrabotka rezaniem titanovykh splavov [Processing by cutting of titanic alloys]. Moscow: Mashinostroenie, 1970.
8. Kabaldin Yu.G. Issledovanie prochnosti stsepleniya struzhki s instrumentom [Investigation of the adhesive strength of the chip with the tool]. Stanki i instrument. 1973. No. 4. P. 36—37.
9. Eugene R.L. Tooling structure: interface between cutting edge and machine tool. Keynote papers WSUD USA. Ann. CIRP. 2000. Vol. 49(2). P. 591—634.
10. Narutaki N., Murakoshi A., Motonishi S., Takeyama H. Study on machining of titanium alloys. Ann. CIRP. 1983. Vol. 32(1). P. 591—634.
11. Rahman M., Wong Y.S., Zareena A.R. Machinability of titanium alloys. JSME Int. J. Ser. C. 2003. Vol. 46(1). P. 107—115.
12. Zhuchkov N.S., Bespakhotnyi P.D. Povyshenie effektivnosti obrabotki rezaniem zagotovok iz titanovykh splavov [Increase of efficiency of processing by cutting of preparations from titanic alloys]. Moscow: Mashinostroenie, 1989.
13. Sato H. Machining of titanium alloys. Kinzoku. 1982. Vol. 52. No. 3. P. 58—66.
14. Mylnikov V.V., Pronin A.I., Chernyshov E.A. Povyshenie rabotosposobnosti kontsevykh frez [Mproving the performance of end mills]. Mezhdunarodnyi zhurnal prikladnykh i fundamental’nykh issledovanii. 2013. No. 10 (Pt. 2). P. 227.
15. Vereshchaka A.S., Vereshchaka A.A., Savushkin G.Yu., Sivenkov A.S. Mnogosloinye nanostrukturirovannye pokrytiya dlya rezhushchego instrumenta [Nanostructured multilayer coatings for cutting tools]. Perspektivnye materialy. 2014. No. 5. P. 39—48.
16. Sinopal’nikov V.A., Gurin V.D. Teplovye usloviya raboty bystrorezhushchego instrumenta s pokrytiem iz nitrida titana [Thermal conditions of work with HSS tools coated with titanium nitride]. Stanki i instrument. 1983. No. 1. P.14—16.
17. Suresh S. Fatigue of metals. Cambridge University Press, 2006.
18. Giannakopoulos A.E., Suresh S. Determination of elastoplastic properties by instrumented sharp indentation. Scr. Mater. 1999. No. 10. Р. 1191—1198.
19. Pronin A.I., Mylnikov V.V., Chernyshov E.A. Prichiny nizkoi rabotosposobnosti plastin iz rezhushei keramiki pri tvyerdom tochenii [The reasons for the low efficiency of cutting ceramics inserts in hard-part turning]. Materialovedenie. 2014. No. 5. P. 13—15.
20. Pronin A.I., Mylnikov V.V., Rozhkov I.I. Povyshenie effektivnosti obrabotki za schet ispol’zovaniya rezhushchego instrumenta, osnashchennogo uprochnennymi plastinami iz sverkhtverdykh materialov i rezhushchei keramiki [The increase of the processing efficiency due to the use of the cutting tool, equipped with hardened plates of superhard materials, cutting ceramics and]. Mezhdunarodnyi zhurnal prikladnykh i fundamental’nykh issledovanii. 2013. No. 10 (Pt. 2). P. 377—380.
21. Pronin A.I., Mylnikov V.V. Vliyanie razlichnykh metodov uprochneniya na rabotosposobnost’ rezhushchikh plastin iz polikristallicheskikh sverkhtverdykh materialov i mineralokeramiki pri obrabotke trudnoobrabatyvaemykh materialov [Influence of various methods of hardening on operability of the cutting plates from polycrystalline supersolid materials and mineralokeramik when processing of the hardly processed materials]. Tekhnologiya metallov. 2011. No. 9. P. 36—41.
22. Kremnev L.S., Sinopal’nikov V.A. Izmenenie struktury i svoistv v rezhushchei chasti instrumenta iz bystrorezhushchikh stalei v protsesse nepreryvnogo tocheniya [Changes in the structure and properties of the cutting tool from high-speed steels during continuous turning]. Vestnik mashinostroeniya. 1974. No. 5. P. 63—67.
Review
For citations:
Mylnikov V.V., Pronin A.I., Romanov A.D. Development of hardening technologies to improve performance of VT20 titanium alloy cutting. Izvestiya. Non-Ferrous Metallurgy. 2016;(3):40-47. (In Russ.) https://doi.org/10.17073/0021-3438-2016-3-40-47
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