所标尺寸为处理前的4 o: J: B& S2 m2 |! }4 t8 p4 Y
7 r. @2 w7 _$ y! B. v8 h美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。
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MIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.)$ N7 y& P' o; j7 ~3 {
! K1 b* \: C8 M2 Q7 a H4 o) DASTM B-449 也有部份関係。, Y9 C& E( I) G; _) X/ `
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。3 N: }/ n$ B7 H5 G5 R. p0 U, ^
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Chemical Films(化成皮膜); q! Q$ `0 R! d& B4 z
* l, m) E% [- A7 i, ?# dCoatings 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.: }9 D$ {# |: S4 y8 i( [( |6 F/ W" R
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Class 1 A
" {, I2 M7 ]6 }, ZClass 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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/ D/ H" L/ L9 o6 F; C: fClass 3
- }3 x) w& _0 ]8 A3 _7 j- TClass 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |
发表于 2008-10-9 10:13:12
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