配方类型:

METALS

配方说明:

To Seal Porous Light Metal Castings (U.S. Patent 2,680,081)

配方组成:

Water/To make 100 cc
Chromic Acid/7 g
Potassium Dichromate/5 g
Waterglass/50 cc

配制方法:

The castings are placed in a vacuum and then in the solution at 95 to 100'C for half an hour at 60 to 80 lb/sq inch pressure.