PROCESS OF ELECTROLYTIC CHROME PLATING OF PARTS IN HOLLOW ANODE Russian patent published in 1997 - IPC

FIELD: electrodeposition, deposition of corrosion-and wear-resistant coats. SUBSTANCE: process of electrolytic chrome plating of parts in hollow anode includes sequential deposition of milk layer of chrome at temperature 70 C and of layer of hard chrome at temperature 50 C. Deposition of layers is carried out in one bath and temperature is regulated by change of level of electrolyte relative to upper edge of anode. Level of electrolyte for deposition of layer of milk chrome is set below and for deposition of hard chrome - above upper edge of anode. Relation of volume of internal space of anode to area of surfaces of parts amounts to 0.8-1.1 l/sq.dm. EFFECT: increased reliability of process, improved quality of chrome plated parts. 2 cl, 1 dwg