Bright Dipping is a chemical or electro-brightening treatment which produces an extremely high luster on aluminum or copper alloy. The way that bright dip achieves this high luster is by smoothening the surface of the aluminum or copper alloy at the microscopic level. The bright dip procedure is often used as a pretreatment for anodizing to enhance the aesthetic qualities of a part. : n& e; G' a6 Q( K) w
, x/ k( l: m# C6 r! Y網上現抄的,,應該是多次酸洗的第二道。因為目的不一樣,,一道酸洗只為去除銹蝕,,二道酸洗才是達到鏡面光澤1 I' {0 O; T V [
& Y. i, v- e& C7 h ?3 o! v第一步酸洗處理后不能完全除盡氧化膜,表面附著一層灰色膜,,光澤較差,,必須經過第二步酸洗,除去表面灰色膜,,使其達到近似鏡面光亮$ b" ^4 O3 r+ Q
|