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

Yıl 2020, Cilt: 35 Sayı: 1, 225 - 240, 25.10.2019

Hüseyin Gürbüz , Ulvi Şeker , Fırat Kafkas

https://doi.org/10.17341/gazimmfd.454386

Cited By: 11

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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