配方类型：	METALS AND THEIR TREATMENT
配方说明：	Acid Pickling Solutions Chromic nitric
配方组成：	Nitric acid/3.25 oz/gal HF 1.0 Chromic acid/37.5 oz/gal Operating Conditions Temp. 70-90F Time 30 sec. -2 min. Construction Details Tanks lined with rubber or vinyl base materials Comments Particularly recommended for pickling of die castings. Metal Removal; Mils 0.5-1.0 Phosphoric aci Phosphoric acid/115.2 oz/gal
配制方法：	Operating Conditions Temp. 70-80F Time 0.5-1 min. Construction Details Ceramic, tanks lined with rubber, lead or glass Comments For all types of castings. Removes alum. segregations from surfaces of AZ91A and AZ91B alloys. Metal Removal; Mils: 0.5

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