Electroplating for forging surface treatment
2022-11-14
The forging surface is treated by electroplating. The purpose is to deposit a metal coating with good adhesion on the forging surface, but with different properties and the base material. The process of attaching a metal film to the surface of a metal forging by electrolysis. Can play a role in preventing corrosion, improving wear resistance, electrical conductivity, reflective and improve the appearance. Electroplating is mostly single metal or alloy material forgings, electroplating matrix materials in addition to iron based cast iron, steel and stainless steel, there are non-ferrous metals. So electroplating is not widely used in forgings.
The plating of forgings can be divided into hanging plating, rolling plating, continuous plating and brush plating, which are mainly related to the size and batch of forgings. Hanging plating is suitable for forgings of general size, such as chrome on car bumpers, bicycle handlebars, etc. Roll plating is suitable for small forgings, such as fasteners, washers, dowel, etc. Continuous plating is suitable for mass production of wire and strip. The influence of temperature on forging electroplating is mainly manifested in the surface quality and electroplating efficiency of forging. Therefore, all kinds of plating need heating, there should be thermostat control of heating equipment, and ask the staff to do the bath temperature record. Of course, from the point of view of energy conservation, to try to use room temperature process. But some heavy forgings can only work at a certain high temperature. The key is to strengthen management to prevent the waste of energy and bath evaporation caused by overheating. The temperature management is not limited to the plating tank, the temperature of hot water washing should also be managed. Many electroplating forgings only pay attention to the temperature control of the plating tank, regardless of the hot water, either insufficient heating, or excessive heating, adverse to quality and waste of resources. Electroplating solution has acidic, alkaline and added chromium mixture acid and neutral solution, no matter what kind of plating method, and to be plated forgings and plating solution in contact with the plating tank, hanging device, etc., should have a certain degree of versatility. For example, copper plating on the sliding surface of large herringbone gear forgings can prevent early drawing of the sliding surface.
The plating of forgings can be divided into hanging plating, rolling plating, continuous plating and brush plating, which are mainly related to the size and batch of forgings. Hanging plating is suitable for forgings of general size, such as chrome on car bumpers, bicycle handlebars, etc. Roll plating is suitable for small forgings, such as fasteners, washers, dowel, etc. Continuous plating is suitable for mass production of wire and strip. The influence of temperature on forging electroplating is mainly manifested in the surface quality and electroplating efficiency of forging. Therefore, all kinds of plating need heating, there should be thermostat control of heating equipment, and ask the staff to do the bath temperature record. Of course, from the point of view of energy conservation, to try to use room temperature process. But some heavy forgings can only work at a certain high temperature. The key is to strengthen management to prevent the waste of energy and bath evaporation caused by overheating. The temperature management is not limited to the plating tank, the temperature of hot water washing should also be managed. Many electroplating forgings only pay attention to the temperature control of the plating tank, regardless of the hot water, either insufficient heating, or excessive heating, adverse to quality and waste of resources. Electroplating solution has acidic, alkaline and added chromium mixture acid and neutral solution, no matter what kind of plating method, and to be plated forgings and plating solution in contact with the plating tank, hanging device, etc., should have a certain degree of versatility. For example, copper plating on the sliding surface of large herringbone gear forgings can prevent early drawing of the sliding surface.
this is production line of tongxin forging:
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