What to pay attention to in electrophoresis process design (1)
In the design of the electrophoresis process, we must pay attention to some small details. Some small things may seem inconspicuous, but if not considered carefully, it will cause a lot of trouble to the operation of the production line and subsequent operations, such as the time between process steps, overflow Flow water washing, phosphating slag removal, process hole design of workpiece, tank body and heating tube design, etc.
Today, let's talk about the interval time of the process and the matters of the design of the work hole. We will analyze the rest later.
Operation interval time
The interval between each process is required. If the time is too long, it will cause the workpiece to rust back during operation. Especially in the pickling process, the workpiece is very easy to oxidize and rust in the air after pickling. It is green, so it is best to have a water film protection between processes to reduce rust. The rusty yellowing and greening workpieces seriously affect the phosphating effect, causing the workpiece to hang gray and yellowing, and can not form a complete phosphating film, so the interval between processes should be shortened as much as possible. However, the interval between processes should not be too short, otherwise the water in the workpiece's water storage cannot be completely drained, which is prone to the phenomenon of stringing. Especially in the spraying mode, spraying and splashing each other will be caused to make the tank liquid. The composition is difficult to control and can even damage the bath. Therefore, when designing the production line, it is necessary to consider the process interval time. We must choose an appropriate process interval time according to the workpiece geometry and size to ensure the quality of the product.
For some pipe fittings and some workpieces that are prone to form dead angles and cause water storage, the electrophoretic coating process can easily lead to trough fluid. Therefore, we need to choose appropriate positions to drill process holes to ensure that the water can be kept short Exhausted within the time. Otherwise, it will cause stringing or secondary rusting of the product, which will affect the final product paint film effect.
In the design of electrophoresis process, there are too many that need our attention, every detail needs to be noticed. When looking for suppliers, you need to choose the design capabilities to ensure that you can produce qualified products. We will continue to analyze other matters needing attention in later articles, so stay tuned.