What is it about?
Polished surfaces of cast irons used in block engines were tested under linear scratch system. Samples were positioned to obey a similar orientation during the honing process. This test simulates one of the most important mechanisms observed in block engine, the abrasion.
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Why is it important?
We used a tool geometry for scratching surfaces trying to simulate a real machining condition. In this case, the friction was very disturbed by the presence of graphite. Even tough, compacted graphite promotes a minor friction, which can be a good indicative for future evaluation of its machinability.
Perspectives
More resistant cast irons, such as compacted graphite, can be used without loss in terms of frcition coefficient.
Giuseppe Pintaude
Universidade Tecnologica Federal do Parana
Read the Original
This page is a summary of: Comparison of scratch resistance of lamellar and compacted graphite irons used in cylinder liners, Journal of the Brazilian Society of Mechanical Sciences and Engineering, November 2016, Springer Science + Business Media,
DOI: 10.1007/s40430-016-0690-8.
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