Processing technology for divisionally plating and coating hub and special protective clothing

Abstract

The invention relates to a processing technique of subsection electroplating and vehicle hub coating and a special protective tool. The design points lie in that: the blank surface of the hub is firstly polished; then, the paste silica liquid is casted on the face of the plating surface to be electroplated on the hub and is solidified; then the edges of the solidified silica module are trimmed to lead the silica module to completely cover the plating surface to be electroplated on the hub but not to exceed the plating surface; spraying resistant material is coated and baked to be solidified; electroplating treatment is carried out to the hub; the electroplating layer on the hub is covered by the protective tool; a paint layer is sprayed on the bottom powder layer of the hub. The invention provides electroplating and coating treatments according to different subsections of the hub, which not only leads the hub to have the bright and anti-corrosion effect of the electroplating wheel but also to have the antiskid and anti-corrosion characters of the coating wheel. Furthermore, the production cost is low. At the same time, the invention also provides a special protective tool for electroplating and coating the hub according to different subsections of the hub.

Description

[technical field] [0001] The invention relates to a wheel hub surface treatment process, in particular to a process for zoned electroplating and painting wheel hubs. The invention also relates to the special protector for the processing of the zoned electroplating and painting wheel hub. [Background technique] [0002] At present, the wheel hub has the following three surface processing techniques: [0003] 1. Spraying process: It is the most widely used and mature process at present. Its surface treatment is generally divided into three layers: spraying base powder layer, spraying color paint, and spraying transparent paint. The advantages of this process are low cost and good product performance, but the surface of the wheel hub is not bright after spraying, and the appearance of the wheel hub is low-grade. [0004] 2. Electroplating process: currently used in the surface treatment of high-end wheel hubs, generally matt nickel plating, acid copper plating, nickel plating...

AI Technical Summary

Problems solved by technology

At the same time, the friction between the surface of the plating layer on the outer rim of the wheel hub and the tire is small, and sometimes slipping occurs, while the inner rim and the back cavity are often low-potential areas during electroplating, and the quality of the plating is difficult to guarantee, and it is easy to corrode, and higher The required wheel hub often also needs to be sprayed with a layer of protective paint, which further increases the cost.

[0005] 3. Machining and electroplating after spraying: This process is to remove part of the coating by machining after spraying, and then electroplate on the surface of the removed layer. This process cannot be implemented on surfaces with various shapes and difficult machining. The biggest problem is that the coating in the finished state will inevitably be bruised and scratched in the subsequent machining, grinding, electroplating and other processes, and the paint surface will be matted during the electroplating process. After electroplating, the paint surface looks old, so This technique has not been widely used

Images