Improvement of Machining Vibrational Stabilization for a CNC Lathe in Turning of 420 Hardened Steels by MQL and Cryogenic Method

Yıl 2022, Cilt: 3 Sayı: 2, 290 - 299, 18.12.2022

Fatih Pehlivan

https://doi.org/10.55546/jmm.1182481

Öz

It is common to find annealed and tempered stainless steels on the market for raw materials. The choice of proper heat treatment settings is one of the most influential aspects in determining the corrosion resistance of annealed materials. The degradation of materials as a result of wear and corrosion is a problem that leads to very considerable economic losses nowadays. By applying lubrication and cooling to the material's surface during operation, the destructive effects of wear and corrosion on the material may be reduced. This study investigates the influence that different machining and lubrication/cooling environments have on vibrational stabilization-based acceleration as well as power consumption during the turning of AISI 420 stainless steel under dry, minimum quantity lubrication (MQL), and cryogenic settings. In all of the turning trials, the cutting speed and the depth of cut were maintained at the same levels. When the data were analyzed, a change from the dry environment to the MQL condition resulted in a drop of 7.04% and 5.2% in power consumption and acceleration, respectively, while a change from the MQL test settings to cryogenic cooling conditions resulted in a decrease of 2.02% and 14.3% in power consumption and acceleration, respectively.

Anahtar Kelimeler

Vibration, Power consumption, Minimum quantity lubrication (MQL), Cryogenic cooling, Turning, AISI 420 stainless steel

Destekleyen Kurum

Karabuk University Scientific Research Coordinatorship

Proje Numarası

KBÜBAP-22-ABP-010

Teşekkür

This study was supported by Karabuk University Scientific Research Coordinatorship with Project number of KBÜBAP-22-ABP-010.

AISI 420 Paslanmaz Çeliğin MQL ve Kriyojenik Yöntemlerle Tornalanmasında CNC Torna Tezgahında İşleme Titreşim Stabilizasyonunun İyileştirilmesi

Öz

Piyasada hammadde olarak tavlanmış ve temperlenmiş paslanmaz çelikler yaygın olarak bulunabilmektedir. Uygun ısıl işlem ayarlarının belirlenmesi, tavlanmış malzemelerin korozyon direncini belirlemede en etkili yönlerden biridir. Aşınma ve korozyon sonucu malzemelerin bozunması günümüzde çok önemli ekonomik kayıplara yol açan bir sorundur. Çalışma sırasında malzeme yüzeyine yağlama ve soğutma uygulanarak aşınma ve korozyonun malzeme üzerindeki yıkıcı etkilerinin azaltılması istenmiştir. Bu çalışma, farklı işleme ve yağlama/soğutma ortamlarının, AISI 420 paslanmaz çeliğin kuru, minimum miktarda yağlama (MQL) ve kriyojenik soğutma koşullarında tornalanmasının güç tüketiminin yanı sıra titreşim stabilizasyonuna dayalı ivme üzerindeki etkisini araştırmaktadır. Tüm tornalama denemelerinde kesme hızı ve talaş derinliği aynı seviyelerde tutulmuştur. Veriler analiz edildiğinde, kuru ortamdan MQL koşuluna geçiş güç tüketiminde ve ivmede sırasıyla %7,04 ve %5,2’lik düşüşe neden olurken, MQL test ayarlarından kriyojenik soğutma koşullarına geçiş sırasıyla güç tüketimi ve ivmede sırasıyla 2,02 % ve 14,3%'lük bir düşüşe neden olmuştur.

Anahtar Kelimeler

Titreşim, Güç tüketimi, Minimum miktarda yağlama (MQL), Kriyojenik soğutma, Tornalama, AISI 420 paslanmaz çelik

Proje Numarası

KBÜBAP-22-ABP-010

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