所标尺寸为处理前的
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! f; b' H4 ~7 z' G5 k$ p美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。
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x5 Y& g6 A! n, d8 VMIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.)9 W2 ^# o4 W# n& v8 q
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ASTM B-449 也有部份関係。. m$ K8 A6 p! J6 i; Q
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。& z0 x$ ^: f: b7 Z; ^4 v7 k
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Chemical Films(化成皮膜)' ^; c- \7 Q9 E$ l1 U9 U& ^
, n+ p' K w: g0 L) a7 U% h, UCoatings 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. A8 f! e7 Z* W m7 q) w9 j
: v4 F4 n3 }7 rMIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.
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Class 1 A 7 a# @: [! H2 ]6 U* m2 G
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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% a5 f$ \( J$ ]2 C% u4 v2 x1 rClass 3
1 } q) {& Y6 O7 i* Q7 i3 F3 l+ jClass 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |