Method of producing accurately scaled, well-defined surfaces of work pieces from carbonaceous cast iron with tribologic properties
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United States of America Patent
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Sep 24, 1985
Grant Date -
N/A
app pub date -
Apr 29, 1983
filing date -
May 12, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a process for producing accurately scaled, well-defined surfaces of workpieces made from carbonaceous cast iron and having tribologic properties, more particularly of cylinders or internal combustion engines, said surfaces being subjected to at least two operating cycles consisting of an electrochemical and a subsequent mechanical removal. To obtain a constant surface quality, at least the last operating cycle is carried out in a specified ratio between the electrochemical and the mechanical removal and this is a fixed removal ratio. Preferably, a metal bearing plateau percentage of 40 to 65% of the surface is produced with the last operating cycle.
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