播放中国国产国语纯一级黄片免费看, 大鸡吧快来啊阿啊阿啊黄片在线播放, 中文精品日韩网站在线观看视频免费, 别揉我奶头~嗯~啊~一区二区三区,AV无码播放一级毛片免费古装,亚洲春色一区二区三区,91大神极品,美国一级大黄一片免费下载,午夜爽爽爽男女免费观看软件

化學(xué)配方數(shù)據(jù)庫
配方類型: METALS AND THEIR TREATMENT
配方說明: Anodizing of Aluminum
配方組成: Temperature/70-75F
Treatment time/15-30 minutes
Solution/16% Sulfuric Acid
The Aluminum part is made the anode (positive terminal) while a D.C.
voltage of from 12 to 15 is applied. the solution must be cooled to
maintain the temperature within the required limits. This treatment will
provide a hard, corrosion resistant coating on the aluminum surfaced.
Formula No.
Solution/6% Chromic Acid
Temperature/95-110F
Treatment time/30-60 minutes
Voltage/40 D.C.
配制方法: This treatment is recommended where there is possibility of electrolyte entrapment which might result in corrosion of the aluminum part at some later date.

返回數(shù)據(jù)庫查詢
QQ: 2241752642
微信二維碼
電話: 19906633110