Östemperleme İşleminin CBN Kesici Takım Gerilmeleri Üzerindeki Etkisinin Nümerik Simülasyonu

Yıl 2020, , 37 - 44, 01.03.2020

Kadir Gök , Arif Gök

https://doi.org/10.2339/politeknik.452739

Cited By: 1

Öz

Bu çalışmada, östemperleme
işleminin kesici takım gerilmeleri üzerindeki etkisi incelenmiştir. Deneysel
çalışmalardan elde edilen kesme kuvvetleri (esas kesme kuvveti, ilerleme kesme
kuvveti ve pasif kuvvet) ANSYS Workbench programında, kesici takımdaki, talaş
yüzeyi, esas kesici kenar ve yardımcı kesici kenar üzerine 3 boyutlu olarak
uygulanmıştır. Östemperleme sürecinin rolünü vurgulamak için, ilk olarak
Küresel Grafitli Dökme Demir (KGDD) numuneler 900°C de 60 dakika tuz banyosunda
östenitlenmiş, daha sonra 60 dakika boyunca 250°C ve 325°C deki bir tuz
banyosunda ısıl işlem yapılmıştır. Analizler sonunda, kesici takım üzerindeki
eş değer gerilme (vonMises), kayma gerilmesi (Tresca), X, Y ve Z yönlerindeki
normal gerilmeler heaplanmıştır.

Anahtar Kelimeler

Metal kesme, sonlu elemanlar metodu, östemperlenmiş küresel grafitli dökme demir

Numeric Simulation of Effect on The CBN Cutting Tool Stresses of Austempering Process

Öz

In this study, we were investigated
the effect of austempering process on the cutting tool stresses. The cutting
forces obtained from experimental studies (main cutting force, feed force and
passive force) were applied to rake face, main cutting edge, auxiliary cutting
edge on the cutting tool as three dimensional in the ANSYS Workbench program.
To emphasize the role of the austempering process, Ductile Iron (DI) specimens
were firstly austenitized in salt bath at 900°C for 60 min, after which they
were quenched in a salt bath at 250°C and 325°C for 60 min. The equivalent
stress (von-Mises), shear stress (Tresca), normal stresses in the X, Y and Z
directions on the cutting tool were calculated at the end of the analysis.

Anahtar Kelimeler

Metal cutting, finite element method, austempered ductile iron

Kaynakça

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