TongGun barrel plating solution of copper, actually also is relatively easy to appear in a kind of impurity, it and metallic impurity such as iron, at that time, that is to reduce the conductivity of solution, that is, in fact also be makes bright chrome layer narrow area, moreover, we also is to actually pay attention to its coverage is also fell.

Roller belongs to the inner hole, because in the process of electroplating, corrosion and oxidation of chromic acid solution will contaminate the plating solution. When the mass concentration of copper impurities is relatively high, the bath temperature remains the same. In general, the current density is adjusted to 18A/dm2 or 20A/dm2. As a result, the coating will not have a relatively obvious impact. At the same time, we also need to pay attention to adjust the mass concentration of chromium anhydride to the upper limit of the process (250g/L), relatively reduce the mass concentration of impurities, so as to improve the quality of the coating.

However, in terms of the mass concentration of copper impurities, that is to pay attention to be controlled under 6g/L, and this point, which is an important factor of copper roller chromium plating. At this time, we will actually be on the inner wall of the roller coating a layer of insulation film, after 24 hours of drying after electroplating. In the hope of extending its life.

Next, we should pay attention to the fact that the film on the copper roller will inhibit the corrosion and oxidation of the copper on the inner wall by chromic acid.

After, we are actually to pay attention to the clamps on the copper roller, that is, to pay attention to must be made of iron materials, on both ends of the splint and the center fixed screw, that is, not to use copper (except hook). Midway power failure, pay attention to immediately take out the plating, which is in fact, in order to prevent long time into the bath to make the copper roller substrate oxidation phenomenon.