所标尺寸为处理前的
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# _$ p! v( L3 ^( n* W9 d" M美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。8 y& m, |$ o& r0 @! i+ {
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MIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.)
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9 z/ b2 U! g5 v0 ZASTM B-449 也有部份関係。
4 I- M& T/ ?0 z& O1)化学导电氧化与alodyne是相同的处理办法。alodyne也有其导电性能。& e- |! ]* a4 C8 T6 H
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Chemical Films(化成皮膜)
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4 n( y/ X+ z% f9 Z, 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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6 R8 [# q% K2 G9 X( a4 l, ]2 t' W6 y9 `MIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.6 c1 f8 C G: _" U/ [/ v
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Class 1 A ' {6 J$ z2 q6 w* t9 u: t3 b
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.# V+ K( g3 b+ Z7 V! y
, q" Y' |, ?2 y1 Z1 qClass 3 / e8 ?; E1 S4 s' p7 \# L
Class 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |