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Investigation of the wear mechanism of cubic boron nitride tools used for the machining of compacted graphite iron and grey cast iron

Gastel, Michael and Konetschny, Christoph and Reuter, U. and Fasel, Claudia and Schulz, Herbert and Riedel, Ralf and Ortner, Hugo M. :
Investigation of the wear mechanism of cubic boron nitride tools used for the machining of compacted graphite iron and grey cast iron.
In: Journal of refractory metals & hard materials, 18 (6) pp. 287-296.
[Article] , (2000)

Abstract

Various experiments were performed to investigate the wear mechanism of cubic boron nitride (cBN) tools used for the machining of compacted graphite iron (CGI). Comparative studies for tools used to machine grey cast iron (CI) were also performed in order to find out why in this case the tool lifetime is significantly higher. Two main effects were found that are responsible for tool wear, namely: (1) oxidation of the tool, and (2) interdiffusion of constituting elements between tool and CGI. These wear mechanisms are more or less the same for the machining of CGI and grey CI. The difference in tool lifetime can be explained by the formation of a MnS layer on the tool surface in the case of grey CI. This layer is missing in the case of CGI. The MnS layer acts as a lubricant and as a diffusion barrier and is the reason for the reduced wear in the case of grey CI.

Item Type: Article
Erschienen: 2000
Creators: Gastel, Michael and Konetschny, Christoph and Reuter, U. and Fasel, Claudia and Schulz, Herbert and Riedel, Ralf and Ortner, Hugo M.
Title: Investigation of the wear mechanism of cubic boron nitride tools used for the machining of compacted graphite iron and grey cast iron
Language: English
Abstract:

Various experiments were performed to investigate the wear mechanism of cubic boron nitride (cBN) tools used for the machining of compacted graphite iron (CGI). Comparative studies for tools used to machine grey cast iron (CI) were also performed in order to find out why in this case the tool lifetime is significantly higher. Two main effects were found that are responsible for tool wear, namely: (1) oxidation of the tool, and (2) interdiffusion of constituting elements between tool and CGI. These wear mechanisms are more or less the same for the machining of CGI and grey CI. The difference in tool lifetime can be explained by the formation of a MnS layer on the tool surface in the case of grey CI. This layer is missing in the case of CGI. The MnS layer acts as a lubricant and as a diffusion barrier and is the reason for the reduced wear in the case of grey CI.

Journal or Publication Title: Journal of refractory metals & hard materials
Volume: 18
Number: 6
Publisher: Elsevier SCI LTD, Oxford, England
Uncontrolled Keywords: Compacted graphite iron, Grey cast iron, Wear, Cubic boron nitride tools
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute of Production Management, Technology and Machine Tools (PTW)
Date Deposited: 19 Nov 2008 16:27
DOI: 10.1016/S0263-4368(00)00032-9
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