A method and device for forming electroformed nickel parts

Abstract

The invention provides an electroforming nickel component forming method. The method comprises the following steps: a, producing a pictographic auxiliary cathode, namely producing a pictographic auxiliary cathode in a concentrated area of electric wires according to the distribution characteristic of current on a core mold, wherein the pictographic auxiliary cathode is a framework structure made of a metal conductor, the pictographic auxiliary cathode comprises a central skeleton, a left side wing frame and a right side wing frame, and the contour of the central skeleton and the wing frames is maintained consistent with that of the concentrated area of the electric wire; b, electroforming, namely, placing the core mold in a plating solution, fixing two ends of the central skeleton of the pictographic auxiliary cathode onto the core mold, integrally covering the core mold by virtue of the pictographic auxiliary cathode, wherein the distance between the pictographic auxiliary cathode and the core mold is 10mm to 20mm, the core mold and the pictographic auxiliary cathode are respectively connected with an electroforming cathode, an electroforming anode is connected with a nickel plate, the electroforming process parameter is as follows: the current density is 16 to 18 A / dm<2>, and the electroforming time is 13 to 16 hours; and c, taking out the component from the core mold.

Description

technical field

[0001] The invention relates to a part surface treatment method, in particular to an electroforming nickel part forming method. Background technique

[0002] Electroforming is a process in which metal products are produced by electrodepositing metal on a mandrel and then separating the electrodeposited metal from the mandrel. The basic principle of electroforming is basically the same as that of electroplating. However, during electroplating, it is required to be firmly combined with the substrate to achieve the purpose of protection and decoration; while electroforming requires that the electroforming layer be separated from the mandrel, and its thickness is much greater than that of the electroplating layer.

[0003] The electroformed nickel layer obtained from the sulfamate plating solution has the characteristics of high strength, good plasticity, and low internal stress, but the nickel layer in some parts of the part is prone to nodules and burrs, and t...

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