What method can be used to detect residual impurities and metal particles on the wire surface?
Therefore, the removal of metal surface impurities and removal of metal surface oxides, the two are different.
Remove the metal surface oxide, refers to the removal of the metal itself has been oxidized surface, such as: rust, skin and other materials that originally belong to the material itself.
Remove metal surface impurities, refers to the removal of metal surface attached substances, such as cement, paint, spots and other materials that do not belong to the material itself.
