所标尺寸为处理前的
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美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。9 ]2 u+ u( P$ K$ q
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- B* H, I$ H( m. pMIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.)% i: Y) R: c# _5 y
" m! `2 p0 T I( Q' f4 h3 T6 v; jASTM B-449 也有部份関係。1 P. a' N: ~) \' S( Q' \% [, D
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。$ @: {4 ?( ?+ o) I; J. j
4 Y' u1 o+ f) s B; D: n1 X# ?3 lChemical Films(化成皮膜)6 x( V/ O. B! \/ q' P- f d7 M
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Coatings 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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MIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.
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$ M- ~# R# i M: T" t rClass 1 A . Y& K% Q8 z+ e% n( P; K, l
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.% H1 i: l9 n2 A* E+ H: B' w
2 V+ P [: W" N+ [Class 3 4 L( A7 w5 t4 e
Class 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |