The Performance of PVD Coated Grade in Milling of ADI 800
The aim of this investigation is to study the
performance of the new generation of the PVD coated grade and to
map the influence of cutting conditions on the tool life in milling of
ADI (Austempered Ductile Iron). The results show that chipping is
the main wear mechanism which determines the tool life in dry
condition and notch wear in wet condition for this application. This
due to the different stress mechanisms and preexisting cracks in the
coating. The wear development shows clearly that the new PVD
coating (C20) has the best ability to delay the chipping growth. It
was also found that a high content of Al in the new coating (C20)
was especially favorable compared to a TiAlN multilayer with lower
Al content (C30) or CVD coating. This is due to fine grains and low
compressive stress level in the coating which increase the coating
ability to withstand the mechanical and thermal impact. It was also
found that the use of coolant decreases the tool life with 70-80%
compare to dry milling.
[1] Klocke F. and Klöpper C. "Machining of ADI" WZL- Laboratory of
Machine Tools and Production Engineering, University of
Technology, Aachen, Germany
[2] F. Zanardi "Fatigue Properties and Machinability of ADI" La
metallurgia Italiana 10/2005-p27 - 32.
[3] Kristin Brandenberg "Successfully Machining Austempered Ductile
Iron" Applied process Inc. Technologies Div.-Livonia, Michigan,
USA-October2001.
[1] Klocke F. and Klöpper C. "Machining of ADI" WZL- Laboratory of
Machine Tools and Production Engineering, University of
Technology, Aachen, Germany
[2] F. Zanardi "Fatigue Properties and Machinability of ADI" La
metallurgia Italiana 10/2005-p27 - 32.
[3] Kristin Brandenberg "Successfully Machining Austempered Ductile
Iron" Applied process Inc. Technologies Div.-Livonia, Michigan,
USA-October2001.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:58714", author = "M. Ibrahim Sadik and Toril Myrtveit", title = "The Performance of PVD Coated Grade in Milling of ADI 800", abstract = "The aim of this investigation is to study the
performance of the new generation of the PVD coated grade and to
map the influence of cutting conditions on the tool life in milling of
ADI (Austempered Ductile Iron). The results show that chipping is
the main wear mechanism which determines the tool life in dry
condition and notch wear in wet condition for this application. This
due to the different stress mechanisms and preexisting cracks in the
coating. The wear development shows clearly that the new PVD
coating (C20) has the best ability to delay the chipping growth. It
was also found that a high content of Al in the new coating (C20)
was especially favorable compared to a TiAlN multilayer with lower
Al content (C30) or CVD coating. This is due to fine grains and low
compressive stress level in the coating which increase the coating
ability to withstand the mechanical and thermal impact. It was also
found that the use of coolant decreases the tool life with 70-80%
compare to dry milling.", keywords = "Austempered Ductile Iron (ADI), coating, chipping,
milling, tool performance.", volume = "3", number = "5", pages = "260-4", }