Hardox 500 Çeliğinin Delinmesinde Minimum Miktarda Yağlama Yönteminin Yüzey Pürüzlülüğü ve Kesme Sıcaklığına Olan Etkisinin İncelenmesi

Yıl 2024, Cilt: 10 Sayı: 2, 407 - 417, 31.12.2024

Aybars Mahmat

https://doi.org/10.29132/ijpas.1518879

Öz

Hardox 500 aşınma ve kırılmalara karşı dirençli, yüksek sertlik ve mekanik muka-vemete sahip sertleştirilmiş bir çeliktir. Bu yüksek mekanik özellikler bu malzemenin işlenebilirliğini sınırlamaktadır. Bu çalışmanın amacı işlenmesi zor olan Hardox 500 çeliğine farklı soğutma yöntemleri ve işleme parametrelerinin uygulanmasıyla işle-nebilirliğini artırmaktır. Endüstriyel açıdan önemli bir malzeme olan Hardox 500 çeliğinin çeşitli kesme ortamları kullanılarak işlenebilirliğini artırmak amaçlanmış-tır. Farklı ilerleme hızları, kesme hızları ve soğutma yöntemlerinin yüzey pürüzlü-lüğüne, kesme sıcaklıklarına, takım aşınmasına olan etkisi incelenmiştir. Deneysel sonuçlara göre Minimum miktarda yağlama (MMY) yöntemi yüzey kalitesini artır-dığı ve yan yüzey aşınması ile kesme sıcaklıklarını düşürdüğü görülmüştür. Kuru koşullara göre MMY yöntemi kullanılarak yüzey pürüzlülüğünde yaklaşık %20-30, kesme sıcaklığında yaklaşık %15-35 yan yüzey aşınmasında %22-30 oranında iyi-leşme elde edilmiştir. Yüzey kalitesini optimize etmek için yüksek kesme hızı ve düşük ilerleme hızlarının seçilmesi gerektiği görülmüştür. Yüksek kesme hızı ve ilerleme hızı sürtünmeyi artırarak sıcaklığı artırmıştır.

Anahtar Kelimeler

delme, Hardox 500, kesme sıcaklığı, MMY, yüzey pürüzlülüğü

Investigation of the Effect of Minimum Amount of Lubrication Method on Surface Roughness and Cutting Temperature in Drilling Hardox 500 Steel

Öz

Hardox 500 is a hardened steel that is resistant to wear and breakage, has high hard-ness and mechanical strength. These high mechanical properties limit the processa-bility of this material. The aim of this study is to increase the machinability of Hardox 500 steel, which is difficult to process, by applying different cooling methods and processing parameters. A new approach has been applied using various cutting media to increase the machinability of Hardox 500 steel, an industrially important material. The effects of different feed rates, cutting speeds and cooling methods on surface roughness, cutting temperatures and tool wear were examined. According to experi-mental results, it has been observed that the minimum amount of lubrication (MMY) method improves the surface quality and reduces flank wear and cutting temperatures. Compared to dry conditions, by using the MMY method, approximately 20-30% improvement in surface roughness, approximately 15-35% improvement in cutting temperature, 22-30% improvement in flank wear was achieved. It has been observed that high cutting speed and low feed rates should be selected to optimize surface qu-ality. High cutting speed and feed rate increased the temperature by increasing the friction.

Anahtar Kelimeler

cutting temperature, drilling, Hardox 500, MQL, surface roughness

Kaynakça

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