Material for shell of connector and preparation method thereof

Abstract

The invention discloses a material for a shell of a connector and a preparation method thereof, is suitable for preparing the shell of the connector and is particularly used for an RJ series network connector. The invention adopts a steel strip as a substrate. Both surfaces of the steel strip are respectively plated with three layers of nickel thin films with different grain sizes. By electroplating a plurality of film structures with different grain sizes on the substrate, the performances of the plating layers are optimized so as to obtain the material for the shell of the connector, which has excellent corrosion resistance, stamping performance and electromagnetic shielding performance. The invention also provides the preparation method of the material, which comprises the following steps: carrying out degreasing and activating on the cold rolling steel strip; firstly using a pulse electroplating method to electroplate a nanocrystalline nickel plating layer; then using a DC electroplating method to electroplate a nanocrystalline nickel plating layer; using a pulse injecting method to electroplate a nanocrystalline nickel plating layer; using distilled water to clean; drying the obtained product; and finally carrying out heat preservation and dehydrogenation on the dried obtained product.

Description

technical field [0001] The invention relates to a connector shell material and a preparation method thereof, belonging to the field of connector materials and preparation, in particular to RJ series network connectors. Background technique: [0002] With the rapid development of information and electronic technology, the application range of connectors has become wider and wider, and has been widely used in computers, telecommunications, communications, industrial electronics, transportation, aerospace transportation, medical equipment, automobile industry and other fields. However, external electromagnetic waves of various frequencies can easily cause poor transmission quality of the connector. In order to solve this problem, the shell of the connector is often set as a metal shell with electromagnetic shielding performance to avoid interference from external electromagnetic waves. Therefore, the shell material of the connector needs to have excellent electromagnetic shiel...

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Problems solved by technology

[0004] However, there are many problems in the existing method: Chinese patent CN1564381A mentions that the existing electric connector shell material with nickel plating on the aluminum substrate is not dense in different degrees due to the plating layer of electroplating and chemical plating. Corrosion is prone to occur in the medium, resulting in corrosion of the aluminum substrate, resulting in peeling of

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