Etch and Alodine

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0 height="100%"><tr> <td valign="top" width=200 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <A HREF="id44.htm" TARGET="_top" TITLE="Painting Basics"><U>Painting Basics</U></A></div> <div> <A HREF="id62.htm" TARGET="_top" TITLE="Inspection and Planning"><U>Inspection and Planning</U></A></div> <div> <A HREF="id45.htm" TARGET="_top" TITLE="Control Surface Preparation"><U>Control Surface Preparation</U></A></div> <div> <A HREF="id46.htm" TARGET="_top" TITLE="Preparation for Stripping"><U>Preparation for Stripping</U></A></div> <div> <A HREF="id47.htm" TARGET="_top" TITLE="Stripper Application"><U>Stripper Application</U></A></div> <div> <A HREF="id48.htm" TARGET="_top" TITLE="Stripping Cautions"><U>Stripping Cautions</U></A></div> <div> <A HREF="id49.htm" TARGET="_top" TITLE="Hand Sanding"><U>Hand - Sanding</U></A></div> <div> <A HREF="id50.htm" TARGET="_top" TITLE="Post Stripping Inspection"><U>Post - Stripping Inspection</U></A></div> <div> <A HREF="id51.htm" TARGET="_top" TITLE="Basic Body Work"><U>Basic Body Work</U></A></div> <div> <B>Etch and Alodine</B></div> <div> <A HREF="id53.htm" TARGET="_top" TITLE="Surface Preparation"><U>Surface Preparation</U></A></div> <div> <A HREF="id54.htm" TARGET="_top" TITLE="Primer Application"><U>Primer Application</U></A></div> <div> <A HREF="id55.htm" TARGET="_top" TITLE="The Royal Treatment"><U>"The Royal Treatment"</U></A></div> <div> <A HREF="id56.htm" TARGET="_top" TITLE="Base Coat Painting"><U>Base Coat Painting</U></A></div> <div> <A HREF="id57.htm" TARGET="_top" TITLE="Paint Application"><U>Paint Application</U></A></div> <div> <A HREF="id58.htm" TARGET="_top" TITLE="Inspection"><U>Inspection</U></A></div> <div> <A HREF="id59.htm" TARGET="_top" TITLE="ReAssembly"><U>Re-Assembly</U></A></div> <div> <A HREF="id60.htm" TARGET="_top" TITLE="Painting Problems"><U>Painting Problems</U></A></div> <div> <A HREF="id61.htm" TARGET="_top" TITLE="Care of New Paint"><U>Care of New Paint</U></A></div> <bR> </td> <td valign="top" BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <FONT SIZE="5" COLOR="#000000" FACE="Arial" ><B>Royal Aircraft Services</B></FONT>     |     <A HREF="index.htm" TARGET="_top" TITLE="Royal Aircraft Services"><U>home</U></A></div> <div> Etch and Alodine</div> <bR> <div> <B>Surface preparation for painting is the most important requirement for insuring proper adherence and performance of a paint system. </B></div> <bR> <div> <B>Prior to applying the primer coat, the bare metal is given a final hand-sanding and a special wax and grease remover is used to remove any impurities.</B></div> <bR> <div> <B>The bare aluminum is acid-etched and chemically treated to assure long-term protection from corrosion. Chromate conversion coating material is brushed on and allowed to react with the aluminum surfaces until it turns a brassy iridescent yellowish tint; reaction time is between 3 and 5 minutes.  Then the material is blotted off with rags and clean water.  </B></div> <bR> <div> <B>No visible coating residue (yellowish color) will remain on the rag after the last blotting action.</B></div> <bR> <div> <A HREF="id53.htm" TARGET="_top" TITLE="Surface Preparation"><U><B>NEXT  <img src="HTMLobj-635/aniGif.gif" border="0" align="bottom" width="38" height="22">  </B></U></A></div> <bR> </td> </tr></table></body>