求教美国MIL-C-5541 CLASS 1A

qq41886956

美国客户提供的铝合金产品图纸中做如下表面处理：CHEMICAL FILM IAW MIL-C-5541 CLASS 1A.DIMENSION APPLY BEFORE APPLICATION.
. x2 G$ |6 a! K; t- n+ d8 B我要查到MIL-C-5541标准，但看不懂其具体是指什么处理，请高手赐教！

hzclife

美国MIL-C-5541 E 分为 class 1A and class 3, 颜色从无色到黄色，当然也有彩色的， 药水系列大多为铬系,也有磷酸系的, 要求有耐腐蚀要求和增加涂层吸附性要求, 您的要求应该是铬系
5 W/ `' H* ^7 T1 |( z3 l黄色皮膜
+ m& Y; Z0 A, m& \

怪怪

所标尺寸为处理前的

3 X. L7 a9 T6 P$ v3 K/ k8 e美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。

4 U4 l& D" }) }6 ~  V' X
MIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.)
8 H: k4 k2 w& w
& G) S) u% t6 |5 Y' EASTM B-449 也有部份関係。
7 R4 B, [$ \% X+ n$ }! 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。
% M3 Y. Z. Y9 F* o- n
3 p: N: O7 ]; ~( u/ S9 QChemical Films(化成皮膜)
4 I* u8 o4 P$ i/ \! P: R; u; P7 B
# n( [8 S5 e/ `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.

0 T. q6 b+ H% NMIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.
' X& z5 }, Y0 l& t- t
" ^1 [1 w& l! x9 u4 ZClass 1 A
- K3 ?* D! T& `  ~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.
6 q+ x+ r) D: g) f4 D) P
Class 3
Class 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。

xcyi818

楼上的,请问你们公司可以做chen-film吗,我需要帮助!

rlicn

+ k0 W% p3 k2 r- L
3 W2 q! t) p1 B1 b; s我们现在有一种新的表面预处理替代方法，更环保，用于波音等飞机上，现在想在工业上推广，不知道用在哪些地方。