AISI 316L çeliğinin tornalanmasında kesici takım formlarının yüzey bütünlüğü üzerine etkisi

Öz

Bu çalışmada, AISI 316L çeliğin işlenmesinde kesici takım formlarının ve kesme parametrelerinin yüzey bütünlüğü üzerine etkileri deneysel olarak araştırılmıştır. Kesme deneylerinde, PVD kaplı MM ve MF formlu sementit karbür kesici takımlar ve PSBNR 2525M12 formunda takım tutucu kullanılmıştır. Kesme parametreleri dört farklı kesme hızı, üç farklı ilerleme ve iki farklı kesme derinliği şeklinde belirlenmiştir. Yüzey bütünlüğü; yüzey pürüzlülüğü, kalıntı gerilmeler, mikrosertlik ve mikroyapı analizleri açısından değerlendirilmiştir. Bütün kesme şartlarında,  kesme derinliği ve ilerleme değeri arttığında yüzey bütünlüğünün kötüleştiği, buna karşın kesme hızındaki artışla birlikte yüzey bütünlüğünün iyileştiği görülmüştür. Kesici takım formları karşılaştırıldığında en iyi yüzey bütünlüğü sonuçları MF formlu kesici takımlarla, en kötü yüzey bütünlüğü sonuçları ise MM formlu kesici takımlarla elde edilmiştir. Talaş açısı artıkça yüzey bütünlüğü iyileşmiştir. En kötü yüzey bütünlüğü kesme hızı 200 m/dak, ilerleme 0,1 mm/dev ve kesme derinliği 1,25 mm olduğunda, en iyi yüzey bütünlüğü ise kesme hızı 125 m/dak, ilerleme 0,3 mm/dev ve kesme derinliği 2,5 mm olduğunda elde edilmiştir.

Anahtar Kelimeler

• Yüzey bütünlüğü,AISI 316L,Kesici takım formu,Kalıntı gerilmeler,Mikrosertlik ve Mikroyapı

Kaynakça

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