Thermal spraying preprocessing method and a cylinder block of an engine so preprocessed
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United States of America Patent
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Oct 14, 2014
Grant Date -
Oct 23, 2008
app pub date -
Oct 14, 2005
filing date -
Oct 15, 2004
priority date (Note) -
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Abstract
The adhesiveness of a thermal spray coating and a cylinder internal surface is improved by forming a sufficient roughened surface on an internal surface. A processing roller is installed on the main shaft of a processing device via a pressurizing mechanism. An uneven surface is provided on the external periphery of the processing roller. By pressing the processing roller against the internal surface while the roller rotates and moves, a fine unevenness that corresponds to the unevenness of the roller is formed on the cylinder internal surface. A thermal spray coating is formed on the internal surface where the inner surface has been roughened by forming the above-mentioned unevenness.
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