配方类型:

METALS AND THEIR TREATMENT

配方说明:

Removing Nickel Oxide Scale

配方组成:

配制方法:

Prior to the sulfuric acid pickle, the scale may be loosened by immersion in a hot solution of 12 oz/gal each of potassium permanganate and caustic soda, or by a warm solution of 1 part muriatic acid and 2 parts water.