1. Fundamental properties
Figure 1 illustrates the progressive thick-film formation mechanism described in paragraph 1.1.1 of the [M 3 015] dossier for a speed increasing from 1 mm/s to 10 m/s, in the case of an aluminum sheet drawing operation lubricated by mineral oil:
firstly, there is a marked and simultaneous decrease in friction and final roughness of the sheet metal, as a result of the reduction in areas of massive metal transfer to the tool;
between 40 mm/s and 2 m/s, friction and roughness...
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Fundamental properties