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

Year 2019, , 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

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