配方类型:

METALS AND THEIR TREATMENT

配方说明:

Solder Brightener

配方组成:

配制方法:

fluoboric acid gives better results than hydrochloric acid in this type of bright dip. Formula consists of 13 oz/gal each of 48% fluoboric acid solution and thiourea. Addition of a nonionic wetting agent improves the action of the bath, which is used at about 120-130'F, for 1-3 minutes.