RU95101484A - Method of electrolytic chrome plating on parts in hollow anode - Google Patents

Abstract

FIELD: chrome plating. SUBSTANCE: increase in versatility of process and possibility of simultaneously conducting milk, hard, and multylayer chrome plating on parts inside hollow anode is achieved by controlling temperature regime in the electrolysis process by changing electrolyte level in relation to anode top. In milk chrome plating, electrolyte level is positioned below anode top thereby creating therein closed electrolyte volume; whereas, in hard chrome plating, electrolyte level is established above anode top, thereby creating electrolyte circulation inside anode. In order to rapidly controlling and evenly maintaining temperature regime in electrolyte, chrome plating inside hollow anodes is carried out with loading density 0.8-1.1 l/sq. dm. Method may be used to apply corrosion and wear-resistant coatings. EFFECT: enhanced efficiency of procedure.

Claims (1)

The invention relates to the field of electroplating and can be used for applying corrosion-resistant and wear-resistant coatings. The goal is to increase the versatility of the process, namely the possibility of simultaneously carrying out milk, hard, as well as multilayer chrome plating of parts inside the hollow anode. To this end, temperature conditions during the electrolysis are controlled by changing the electrolyte level relative to the upper edge of the anode. The electrolyte level during milk chromium plating is set below the upper edge of the anode, creating a closed volume of electrolyte in it, and during hard chromium plating it is above the upper edge of the anode, creating an electrolyte circulation inside the anode. Moreover, for quick regulation and stable maintenance of the temperature of the electrolyte, chromium plating inside the hollow anodes is carried out at a loading density of 0.8 - 1.1 l / dm ² .