Some Factors of Poor Surface Quality of Transformer Insulating Glass Fiber Board (1)

Some factors that may cause the poor quality of the transformer insulating materials glass fiber board surface during the production and processing are summarized as follows:
1. Processing problems of transformer insulating glass fiber board:
Especially for some thin substrates (generally below 0.8mm), because the substrate has poor rigidity, it is not appropriate to use a plate brush to brush the plate.

In this way, the protective layer specially treated to prevent oxidation of the copper on the surface of the substrate during the production process of the substrate may not be effectively removed. Although the layer is thin and the brush plate is easy to remove, it is difficult to use chemical treatment. It is important to control the processing, so as not to cause the problem of blistering on the surface caused by the poor bonding force between the copper foil on the surface of the substrate and the chemical copper; this problem also occurs when the thin inner layer is blackened. Defects, color unevenness, partial black browning, etc.
2. The surface of the transformer insulating glass fiber board during the machining (drilling, laminating, milling, etc.) process is caused by oil or other liquid contaminated by dust and contaminated the surface.
3. Defective transformer insulating glass fiber board sink copper brush plate for transformer:
Excessive pressure on the front copper grinding plate causes deformation of the orifice and brushes out the copper foil fillet of the orifice and even leaks the base material. This will cause blistering of the orifice during the process such as electroplating tin spraying and soldering. The plate does not cause leakage of the substrate, but an excessively heavy brush plate will increase the roughness of the copper at the orifice. Therefore, during the micro-etching roughening process, the copper foil is liable to produce excessive roughening, and there will also be a certain quality. Hidden dangers; therefore, attention should be paid to strengthening the control of the brush plate process. The process parameters of the brush plate can be adjusted to the best through the wear scar test and the water film test.

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