所标尺寸为处理前的& z0 A- F5 [, D; S' i' E! Q
1 R7 G, B/ ^+ S7 v/ \美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。
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& k% M& {# z. u$ [+ YMIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.) m& E5 X2 F: w5 p/ j. k, L1 L
, V+ V1 O r$ @ASTM B-449 也有部份関係。3 c2 L$ S. p0 \* Z
1)化学导电氧化与alodyne是相同的处理办法。alodyne也有其导电性能。& J1 T2 H2 @' c! K6 `. U' v% [
# C( R/ J/ X8 X1 W6 j; zChemical Films(化成皮膜)/ X" ~( n: x; I7 ]( Z
( ~$ ?, t8 [6 b) q! OCoatings for aluminum. Color can vary from colorless to golden - iridescent - brown. Materials should conform to Mil - C - 81706. Coatings shall be continuous free from powdery areas, breaks, scratches, etc.
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' z6 K+ ?4 }/ p* KMIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.# t- O$ B: X4 [; c8 k% Q+ H; D
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Class 1 A $ v0 ?9 d! P# {2 n6 ], y
Class 1A is used as a corrosion preventative film (unpainted) or to improve adhesion of paint finish systems.For maximum protection against corrosion for surfaces to be painted or left unpainted.
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Class 3 ! L7 [3 u, D& X6 W: o; a
Class 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |