Most of the cause of green soldering wave soldering caused by corrosion, this phenomenon occurs mainly in electronic products. However, it is not entirely true. Since it is difficult to tell whether it is green rust or other chemical products, it is found that green substances should be the warning signal and the cause must be immediately identified. In particular, such green substances will become larger and larger and should attract attention. Cleaning can usually be used to improve. Here we look at the causes of corrosion due to analysis:

Wave soldering caused this phenomenon generally occurs in bare copper or copper-containing alloys, the use of non-rosin flux, this corrosive substances containing copper ions, it is green, when found that the green corrosive, you can prove Is not using a non-rosin flux, not properly cleaned. COPPERABETETATES is a compound of copper oxide and ABIETICACID (the main component of rosin). This material is green but not corrosive. It has high insulation and does not affect the quality. However, it will not be approved by customers and should be cleaned. PRESULFATE residues or substrates are produced with similar residues, which produce a green residue after soldering. The substrate maker should be required to conduct a cleanliness test after the substrate is manufactured and cleaned to ensure the quality of the substrate cleanliness.