Metal Finishing Guide Book

2012-2013

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Page 136 of 903

Fig. 5. Treatment process flow chart for manganese phosphating. 133 ��� Activationg pre-rinse; 1. . .2 min immersion at ambient. . .125��F ��� Water rinse (only after pickling); 1. . .2 min immersion at room temperature Pickling (in case of oxidized parts); 5. . .10 min immersion at ambient. . .140��F ��� Water Rinse; 1 . . .2 min immersion at room temperature ��� Cleaning with alkaline immersion cleaner; 5 . . . 10 min immersion at 170��F ��� Manganese phosphating; 5. . .10 min immersion at 160. . .205��F ��� Water rinse;1. . .2 min immersion at room temperature ��� Water rinse (if necessary with additive of emulsifying rust preventatuve oil); 2. . .5 min immersion at 140. . .175��F ��� Drying ��� Cleaning in emulsifying hydrocarbon solvent; 5 min immersion room temperature ��� Water rinse; spraying at room temperature ��� Water rinse; immersion at 150 . . . 175��F

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