Sleipner Soğuk İş Takım Çeliğinin Yüzey Finish Modellemesinde Takım Yolu Stratejisinin ve Kesme Parametrelerinin MRR ve Ra Üzerine Etkisi

Öz

Bu çalışmada içerdiği alaşım elementi ve karbon oranına bağlı olarak yüksek sertlik, aşınma dayanımı ve tokluk özelliklerinden dolayı kalıpçılık endüstrisinde yaygın olarak kullanılan Sleipner soğuk iş takım çeliği kullanılmıştır. Frezeleme yöntemleri ile yapılan deneysel çalışmalarda kesme parametreleri ve takım yolu stratejisinin, yüzey pürüzlülüğü (Ra) ve malzeme kaldırma oranı (MRR) üzerindeki etkileri araştırılmıştır. Kesme parametreleri olarak, takım yolu hareketleri, kesici takım devri ve ilerleme hızı parametrelerinin farklı seviyeleri kullanılmıştır. Finish işleminde yapılan frezelemede talaş derinliği sabit tutulmuştur. Deneysel çalışmalar, Taguchi deney tasarım yöntemi kullanarak L16 ortogonal dizine göre yapılmıştır. Ayrıca yapılan deneysel çalışmalarda elde edilen sonuçlar, S/N oranlarına dönüştürülerek ideal parametre seviyeleri belirlenip, Minitab 17 paket programı kullanılarak ANOVA analizi yöntemi ile yüzey pürüzlülük ve malzeme kaldırma oranı sonuçları istatiksel olarak değerlendirilmiştir. Elde edilen sonuçlar ile ANOVA tabloları oluşturulmuş ve kesme parametrelerinin sonuçlar üzerindeki etkileri belirlenmiştir. Ayrıca yüzey yanıt yöntemi kullanılarak işleme parametrelerine bağlı Ra ve MRR sonuçlarının matematiksel modellemesi yapıldı ve Genetik algoritma yöntemi kullanılarak optimum işleme parametreleri belirlendi. Sonuçlar değerlendirildiğinde oluşturulan matematiksel modelin deney sonuçları ile uyumlu olduğu belirlendi.

Anahtar Kelimeler

• Yüzey Pürüzlülüğü
• Sleipner
• ANOVA
• Taguchi
• Takım Yolu Stratejisi
• MRR.

The Effect of Tool Path Strategy and Cutting Parameters on MRR and Ra in Surface Finish Modeling of Sleipner Cold Work Tool Steel

Abstract

In this study, Sleipner cold work tool steel, which is widely used in the molding industry, was used due to its high hardness, wear resistance and toughness properties depending on the alloying element and carbon ratio it contains. In experimental studies with milling methods, the effects of cutting parameters and toolpath strategy on surface roughness (Ra) and material removal rate (MRR) were investigated. Different levels of tool path movements, cutting tool speed and feed rate parameters were used as cutting parameters. The depth of cut was kept constant during milling in the finishing process. Experimental studies were carried out according to the L16 orthogonal array using the Taguchi experimental design method. In addition, the results obtained in the experimental studies were converted to S/N ratios and the ideal parameter levels were determined, and the results of the surface roughness and material removal rate were evaluated statistically by ANOVA analysis method using the Minitab 17 package program. ANOVA tables were created with the results obtained and the effects of cutting parameters on the results were determined. In addition, mathematical modeling of Ra and MRR results depending on processing parameters was performed using the surface response method, and optimum processing parameters were determined using the genetic algorithm method. When the results were evaluated, it was determined that the mathematical model created was compatible with the experimental results.

Keywords

• Surface Roughness
• Sleipner
• ANOVA
• Taguchi
• Tool Path Strategy
• MRR.

Kaynakça

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