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MACHINING OF GRAY CAST IRONS AND COMPACTED GRAPHITE IRON

Bulent Tasdelen (Institutionen för material- och tillverkningsteknik, Tillverkningsteknik) ; Lars Nyborg (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Gustav Grenmyr (Institutionen för material- och tillverkningsteknik)
The Swedish Production Symposium 2007 (2007)
[Konferensbidrag, refereegranskat]

Abstract: The aim of this paper is to compare the machinability of gray cast iron and compacted graphite iron (CGI), in terms of tool life and microstructure. Two gray cast irons with different graphite morphologies and one CGI were tested. After the tool life tests with carbide and Cubic Boron Nitride (CBN) inserts, microstructural changes on the machined surfaces was investigated and SEM analysis of the inserts were performed. The results show that CBN performed much better than Carbide tools when machining gray cast irons but did not work when machining CGI due to high diffusional wear. The shorter and thicker graphite flakes for one of the gray cast iron caused different chip contact and wear mechanism on the inserts. The comparison of machinability and tool wear gave better understanding of the wear mechanism of CGI.

Nyckelord: Compacted graphite iron (CGI), milling, tool wear, surface integrity,



Denna post skapades 2007-11-06. Senast ändrad 2009-11-17.
CPL Pubid: 61148

 

Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Tillverkningsteknik (2005-2017)
Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik (2005-2017)
Institutionen för material- och tillverkningsteknik (2005-2017)

Ämnesområden

Teknisk mekanik
Materialteknik
Övrig annan teknik

Chalmers infrastruktur