Co2B Nanopartikülleri ile Kaplanmış S235JRC Karbon Çelik Malzemelerin Farklı Kesme Yöntemleri ile İşlenebilirlik Özelliklerinin Araştırılması

Year 2019, Volume: 22 Issue: 1, 169 - 177, 01.03.2019

Mustafa Barış Tuncay Şimşek Adnan Akkurt

https://doi.org/10.2339/politeknik.403990

Cited By: 3

Abstract

Makine imalat sanayinde makine parçalarına genellikle
nihai şekil verildikten sonra kaplama işlemi uygulanmaktadır. Ancak kimi zaman parçaların
kesme işlemleri ile yeniden şekillendirilmesi gerekebilmektedir. Bu gibi
durumlarda kaplama tabakasına zarar vermeden ya da en az zararla işlemin gerçekleştirilebilmesi
için seçilen kesme yöntemi büyük önem arzetmektedir. Bu çalışmada,
mekanokimyasal yöntemle sentezlenen Co₂B nanopartiküller
kullanılarak CO₂ lazeri ile S235JRC (St37-2)
malzeme yüzeyine kaplama yapılmıştır.  Kaplanmış numunelerin işlenebilirlik
karakteristiklerini belirleyebilmek amacıyla numuneler sırasıyla aşındırıcı su
jeti, tel erozyon, aşındırıcı disk ve lazerle kesilmiştir. Kesme işlemleri ile
elde edilen yüzey özellikleri
değerlendirildiğinde, Co₂B nanopartikülleri kullanılarak kaplanmış
çelik malzemenin işlenmesinde en uygun
yöntemin aşındırıcı diskle kesme olduğu tespit edilmiştir. Kaplama karakterizasyonu
ve metalografik incelemelerde X ışını kırınımı (XRD), taramalı elektron
mikroskobu (SEM), optik mikroskop ve mikrosertlik test cihazı kullanılmıştır. 

Keywords

Yüzey özellikleri, işlenebilirlik, nano kaplama, Co2B, mekanokimyasal yöntem

Investigation of the Machinability Properties of Co2B Nanoparticles Coated S235JRC Carbon Steel Materials with different cutting methods

Abstract

In the machine manufacturing industry, machine parts
are generally coated after taking their final shape. However, in some cases it
may be necessary to reshape the parts obtained in this way with cutting
operations.  In such cases, the cutting
method chosen is of great importance to carry out the process with minimum
damage or without damaging to the coating layer. In this study, Co₂B
nanoparticles synthesized by mechanochemical method were coated to the surface
of S235JRC (St37-2) material by CO₂ laser. In order to determine the
machinability characteristics of the coated layers, samples were cut with abrasive
water jet, wire-electrical discharge machining, abrasive disc and laser,
respectively. When the surface properties obtained by the cutting process are
evaluated, it is determined that the abrasive disc cutting is the most suitable
method for Co₂B nanoparticle coated S235JRC (St37-2) materials. The
characterization and metallographic investigations of the coating layers were
carried out with X-Ray diffraction spectroscopy (XRD), scanning electron
microscopy (SEM), optical microscope and micro hardness tester.

Keywords

Surface properties, machinability, nano coating, Co2B, mechanochemical method

References

• [1] Garrett D., “Borates: Handbook of deposits, processing, properties and use”, 1-452, Academic Press, USA, (1998)
• [2] Riedel R., “Handbook of Ceramic Hard Metarials”, Editors: Swain M., Brook R.J., Structure and Properties of Ceramic, Processing of Ceramics, Wiley-VCH Verlag GmbH, 1, Germany, (2000)
• [3] Kanomata T., Ise Y., Kumagai N., Haga A., Kamishima K., Goto T., Kimura H.M., Yoshida H., Kaneko T. and Inoue A., “Magnetovolume effect of Co2B”, Journal of Alloys and Compounds, 259: L1-L4, 1997.
• [4] Petit C. and Pileni M.P., “Nanosize cobalt boride particles: control of size and properties”, Journal of Magnetism and Magnetic Materials, 166: 82-90, (1997)
• [5] Krishnan P., Advani S.G.and Prasad A.K., “Cobalt oxides as Co2B catalyst precursors for the hydrolysis of sodium borohydride solutions to generate hydrogen for PEM fuel cells”., International Journal of Hydrogen Energy, 33: 7095-7102, (2008)
• [6] Paul C.P., Alemohammad H., Toyserkani E., Khajepour A. and Corbin S, “Cladding of WC-12Co on low carbon steel using a pulsed Nd:YAG laser”, Materials Science and Engineering A, 464 (1-2) : 170-176, (2007)
• [7] Meng Q.W., Geng L. And Zhang B.Y., “Laser cladding of Ni-base composite coatings on to Ti-6Al-4V substrates with pre-placed B4C+NiCrBSi powders”, Surface and Coatings Technology, 200 (16-17): 4923-4928, (2006)
• [8] Du B., Zou Z., Wang X. and Qu S., “Laser cladding of in situ TiB2/Fe composite coating on steel”, Applied Surface Science, 254 (20): 6489-6494, (2008)
• [9] Anjos M.A., Vilar R. and Qui Y.Y., “Laser cladding of ASTM S31254 stainless steel on a plain carbon steel substrate”, Surface and Coatings Technology, 92 (1-2): 142-149 (1997)
• [10] Li-li G., Xiu-fang B., Yong-sheng T. and Chun-xia F., “Effect of Co on microstructure and interfacial properties of Fe-based laser cladding”, International Journal of Iron and Steel Research, 16 (4): 84-88 (2009)
• [11] Barış M., “The Synthesis of Nano Cobalt Boride With High Energy Ball Milling and The Development of Mechanical Properties of Low Carbon Steel Surfaces With Coating”, PhD Thesis, Gazi University Graduate School of Natural and Applied Sciences, (2014)
• [12] Simsek T., “Investigation Of The Zirconium Diboride Nanocrystal Coated Different Materials Mechanic And Mechinability Properties”, PhD Thesis, Gazi University Graduate School of Natural and Applied Sciences, (2014)
• [13] Barış M., Simsek T., Akkurt A., “Laser surface treatment of S235JRC carbon steel with Co2B nanocrystals”, International Journal of Materials Research 108 (6): 1-9, (2017)
• [14] Akkurt A., “Effect of cutting speed on surface roughness in AWJ cutting applications of comercial pure aluminium and Al-6061 Aluminium alloy”, Journal of Polytechnic, 8: 69-79, (2005)
• [15] Akkurt A., “Comparision of cut surface properties obtained from AISI 1030 steel by abresive water jet and by other methodologies”, Pamukkale University Journal of Engineering Sciences, 15: 142-152, (2009)
• [16] Dahil L., Dahil İ. and Karabulut A., “Comparison of Advanced Cutting Techniques on Hardox 500 Steel Material And The Effect of Structural Properties of The Material”, Metalurgija, 53 (3): 291-294, (2014)
• [17] Akkurt A., “Surface properties of the cut face obtained by different cutting methods from AISI 304 stainless steel materials”, Indian Journal of Engineering and Materials Sciences, 16: 373–384, (2009)
• [18] Engel S.L. and Labus T.J., “Industrial applications and comparison of lazer and abrasive waterjet technologies in Fluid Jet Technology” 2nd ed. St. Louis, Fundamentals and Applications WJTA, USA, (1993)
• [19] Krajcarz D., “Comparison Metal Water Jet Cutting with Laser and Plasma Cutting”, Procedia Engineering, 69: 838 – 843, (2014)
• [20] Harnicarova M., Zajac J. and Stoic A., “Comparison Of Different Material Cutting Technologies In Terms of Their Impact on The Cutting Quality of Structural Steel”, Technical Gazette, 17 (3): 371-376, (2010)
• [21] Hilton P.A. and Howse D.S., “Cutting process comparison”, The Welding, England, (1997)
• [22] Mukherjee I. and Ray Pn.K., "A review of optimization techniques in metal cutting processes", Computers and Industrial Engineering, 50 (1) : 15-34 (2006)
• [23] Akkurt A., “Experimental Investigation of the Surface Properties Obtained by Cutting Brass-353 (α+β) with an Abrasive Water Jet and other Cutting Methods”, Materials and Technology, 48 (5): 725-734, (2014)