A j-type isolating switch contact finger electroplating process

Abstract

The invention relates to an electroplating process of a J-type disconnecting switch contact finger. The electroplating process is characterized by comprising copper pre-plating, water washing, silver pre-plating and silver plating, wherein before silver plating, contact fingers are suspended on the hanging rod of an electroplating hanger, and tubular insulating shielding cases are arranged to cover the contact fingers, respectively; each tubular insulating shielding case is provided with a window corresponding to the movable contact area of the contact finger on the frontage of the movable contact area of the contact finger; then electroplating is carried out. In the silver plating step, the insulating shielding cases are used for protecting the surfaces of the non-movable contact areas of the contact fingers so as to reduce the attachment amount of metal ions during electroplating, and therefore, a silver coating which is more than 20 microns thick is plated on the movable contact area of each contact finger and only a thinner silver coating can be plated on the non-vertical contact section of the contact finger; as a result, the disconnecting switch contact finger meets the requirement that the same work piece has different thicknesses in different areas through once electroplating; the cost is greatly saved and the processing period is also shortened.

Description

technical field [0001] The invention relates to an electroplating process, in particular to a contact finger electroplating process of a J-type isolating switch. Background technique [0002] The isolating switch is mainly used to reliably isolate the part that needs to be powered off from the live part in the high-voltage power distribution device to ensure the safety of maintenance work. The traditional isolating switch conductive circuit includes a pair of conductive arms, a contact or a contact finger installed at one end of the conductive arm, and the other end of the conductive arm is electrically connected to the wiring board through a soft connection, and the soft connection is covered with a rain cover. It realizes opening and closing through the cooperation of contacts and fingers. [0003] The J-type contact fingers of the isolating switch are as follows: figure 1 As shown, it consists of a vertical installation section 11, a vertical contact section 12 and an a...

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that although the design requirements are met, the static contact area or non-contact area only needs 6 microns, which virtually causes waste of resources and increases in cost.

The disadvantage is that two electroplating is required, so the workload is greatly increased and the production efficiency is reduced

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