1 , electroplated nickel layer thickness control .
We must say that the gold plating layer of black issues , we will discuss how the thickness of the nickel plating . In fact, PCB circuit boards are generally very thin layer of gold plating , gold plating surface of the problem is reflected in many of them are due to poor performance caused by nickel plating . General electroplated nickel layer and thin appearance will cause the phenomenon of white and black . So this is the plant of choice for engineering and technical personnel to inspect the project . 5UM generally need about a nickel plating layer thickness to be sufficient.
2 , nickel plating tank syrup status
Nickel cylinder still say something . If you are not a good long-term solution of nickel cylinder maintenance, no carbon treatment in a timely manner , then electroplated nickel layer it will be easier to produce lamellae, increased coating hardness , brittleness enhanced. Black coating will produce a serious problem . This is what many people tend to ignore the control points . Problems are often important reasons . So please carefully check the status of your factory production line medicine , comparative analysis , and timely and thorough carbon treatment , thereby restoring potions activity and plating solution clean.
3 , gold cylinder control
Now it comes to gold cylinder control . If you only want to maintain a good general medicine and supplementary filtration , gold cylinder contamination levels and stability will be better than the nickel cylinders . However, several aspects need to be careful to check whether the following well :
( 1 ) the adequacy of the gold cylinder and add supplements overdose ?
( 2 ) syrup PH value control how the situation ?
( 3 ) How to conductive salt situation ?
If the check is no problem, then AA machine further analysis of impurities in solution . Margin cylinder syrup state. Finally, do not forget to check the gold cylinder filter cotton core is not a long time without replacement ah.
