The design of the electroplating hanger should consider the shape of the part, the nature of the plating solution, the production method (manual line in the assembly line), the distance and position between the anode and the anode, and the number of installations. In order to ensure that the power lines of the parts in the bath are evenly distributed, the thickness of the coating is uniform, and the process requirements are met.
●Reasonable materials and insulating materials should be selected for the design of the hanger. The parts that are not plated should use appropriate paint and special green hook glue to extend the service life of the hanger and keep the tank liquid clean.
●The structure of the parts should be considered during the design of the hanger to ensure the uniformity of the coating thickness. If the bath solution is poorly dispersed and the current density is high, auxiliary anodes and protective cathodes should be installed if necessary.
●There must be enough conductive cross-sectional area to ensure good contact between the hanger and the parts and good conductivity.
●The hanger made should be easy to assemble and unload, and the production efficiency is high. The plating solution is easy to clean off, and the parts are not easy to fall during use.
●Pay attention to the choice of the hanging position of the plated parts. The suspension position has a very close relationship with the quality of the coating, and the following four points should be avoided.
①Try to avoid contact marks on the mounting part as much as possible. When the angle allows, the use of perforations is the preferred method to avoid the impression of the hook. This is not only beneficial to the hanging fastness, but also to avoid the contact impression of the hook.
②Avoid scorching the tip of the plated part facing the anode. If the protruding part of the tip of the plated part is too close to the anode, it will be scorched due to the concentrated current.
③The parts that need to be polished should face the anode after plating. The polishing surface facing the anode is beneficial to increase the thickness of the coating layer, leaving the polished layer, which can avoid the bottom of the polishing, and obtain a higher polished surface quality.
④ Avoid the formation of air pockets in the recessed parts of the plated parts. During electroplating, the concave surface of the plated parts is easy to collect gas; it is not easy to disperse, resulting in gas trapping. For this reason, this should be fully estimated when determining the mounting position.
