2 results about "Initial current" patented technology

The application relates to the technical field of packaging material production and particularly relates to an efficient preparing method of a nickel plate. The method comprises the following steps: filling an electroforming bath with an electroforming solution; regulating the PH value of the electroforming solution and regulating the temperature of the electroforming solution; gluing the non-working surface of a parent plate to a fixed plate, and sprinkling a passivating solution on the working surface of the parent plate, wherein the parent plate is a nickel plate; connecting the fixed platewith a negative electrode of a direct-current power supply, and connecting a sulfur-containing activated nickel crown with a positive electrode of the direct-current power supply; placing the fixed plate and the sulfur-containing activated nickel crown in the electroforming bath and immersing the fixed plate and the sulfur-containing activated nickel crown under the liquid level of the electroforming solution; connecting the direct-current power supply, adjusting initial current to 15-30A, and after 8-12 minutes, adjusting the current to 50-110A; when the nickel plate deposited on the workingsurface of the parent plate reaches preset thickness, slowly adjusting the current to zero, and disconnecting the direct-current power supply; and peeling off the nickel plate from the working surface of the parent plate so as to obtain the nickel plate. The method of the application is simple to operate and easy to control, the preparing efficiency of the nickel plate can be greatly increased, and at the same time, the quality of the cast nickel plate is improved.