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</html><thumbnail_url>https://vsmabrasivos.com/wp-content/uploads/2021/06/Sentido-ideal-de-lijado-para-arrancar-mas-rapidamente-la-calamina.jpeg</thumbnail_url><thumbnail_width>1200</thumbnail_width><thumbnail_height>408</thumbnail_height><description>&#xC9; muito comum que durante a laminagem a quente do a&#xE7;o se forme uma escala negro-acinzentada, mais conhecida como calamina, devido &#xE0; temperatura e &#xE0;s altas press&#xF5;es exercidas pelos rolos de laminagem. Se a escala fosse uniforme e bem aderida &#xE0; superf&#xED;cie do a&#xE7;o, poderia proteg&#xEA;-lo contra a corros&#xE3;o atmosf&#xE9;rica. Na realidade, por&#xE9;m, o contr&#xE1;rio [&hellip;]</description></oembed>
