Strenx 1100 Çeliğinin MMY Şartları Altında Frezelenmesinde Yüzey Pürüzlülüğü Değerlendirmesi

Abstract

Strenx 1100 üstün mekanik özellikler ile nitelendirilen, gemi ve vinç gibi birçok mühendislik alanında genellikle yük taşıma uygulamalarında tercih edilen en önemli yapı çeliklerinden bir tanesidir. Minimum Miktarda Yağlama (MMY) kesme bölgesine pulverize olmuş yağ uygulanması ile sürdürülebilir imalatı sağlayan, geleneksel yaklaşımlarla kıyaslandığında kendisini daha iyi işlenebilirlik karakteristikleri ile ispatlamış bir yöntemdir. Yüzey pürüzlülüğü, endüstriyel ihtiyaçlara göre üretilmesi gereken, işlenen parçanın kalitesini belirli ölçüde yansıtan bir cevap parametresidir. Bu makale MMY şartları altında Strenx 1100 malzemenin frezelenmesi süresince yüzey pürüzlülüğünün değerlendirilmesi üzerine odaklanmıştır. Kesme hızı (vC), ilerleme (f) and talaş derinliğinin (aP) üç seviyesi birleştirilerek L9 ortogonal dizi oluşturulması için Taguchi deneysel tasarımından yararlanılmıştır. Bulgular, varyans analizi (ANOVA), sinyal-gürültü oranına (S/N) dayalı optimizasyon ve 3d yüzey grafikleri kullanılarak tartışılmıştır. Sonuçlara göre, ilerleme (66.9%), yüzey pürüzlülüğü üzerinde talaş derinliği (22.5%) ve kesme hızından (0.4%) daha etkili olurken, kesme parametrelerinin birinci seviyesinin, vC=75 m/min, f=0.075 mm/rev and aP=0.25 mm, cevap parametresini optimize etmek için seçilmesi gerektiği görülmektedir. İstenen cevap değeri için doğru kesme koşullarının seçimini sağlayan grafiksel gösterimler yüzey pürüzlülüğünün genel eğilimlerini yansıtmaktadır.

Keywords

• Strenx 1100 Çeliği
• Yüzey Pürüzlülüğü
• Frezeleme
• Minimum Miktarda Yağlama

Surface Roughness Evaluation in Milling of Strenx 1100 Steel under MQL Conditions

Abstract

Strenx 1100 is one of the most important structural steel characterized by upmost mechanical properties, generally preferred for load-bearing applications at many engineering fields such as marine and crane. Minimum quantity lubrication (MQL) is a method that presents sustainable machining with applying pulverized oil into the cutting zone, proved it by obtaining better machinability characteristics compared to conventional approaches. Surface roughness is a response parameter reflects the quality of a machined part in a certain degree which should be produced as per the industrial requirements. This paper focuses on the surface roughness (Ra) evaluation of Strenx 1100 steel during milling under MQL conditions. Taguchi design of experiments were utilized with combining three levels of cutting speed (vC), feed rate (f) and depth of cut (aP) in order to create L9 orthogonal array. The findings are discussed using analysis of variance (ANOVA), signal-to-noise ratio (S/N) based optimization and 3d surface plots. According to the results, it is observed that the first level of cutting parameters namely vC=75 m/min, f=0.075 mm/rev and aP=0.25 mm need to be selected for optimization of response parameter while feed rate has more influence (66.9%) than depth of cut (22.5%) and cutting speed (0.4%) on surface roughness. Graphical representations exhibit the general trend of surface roughness which provides chance to selection of accurate cutting conditions for required response value.

Keywords

• Strenx 1100 Steel
• Surface Roughness
• Milling
• Minimum Quantity Lubrication

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