Electroplating
Layers Of Nickel
Our company barrel plates small components using a nickel sulfamate plating bath. The bath also contains a small amounts of nickel bromide. The problem we have is the nickel appears to be layered and tends to delaminate during subsequent processing. Do you have any suggestions for solving this problem?
Read More
Little Used EN Bath
The EN solution is not used very often. We find that after a long period of non-use a scum-like material forms on the surface. Do you have any suggestions and how this can be prevented?
Read MoreBlack Spots On SG Cast Iron
We plate SG iron castings in a zinc acid chloride plating bath and then chromate with a classic hexavalent yellow chemical conversion bath. We recently we tried a trivalent yellow conversion coating, but after processing 30–40 jobs we observe black patches on the jobs immediately after processing. Is it possible that the iron impurities from the casting contaminate the chemical conversion bath and if so, how we can control the process?
Read More
Capture Heat from Exhaust Gases, Save Energy
Process heat recovery unit can provide heating and cooling
Read MoreChemical Quality and Electroless Nickel
Since switching our supplier of sodium sulfide and sodium hypophosphite used in our electroless nickel plating baths, we have had problems such as brown stains and plating out of nickel on the tank walls. Do you have any suggestions for resolving these problems?
Read MoreHow to Fix Stripping Gold
We selectively strip gold from using a reel-to-reel process. Quite often, the gold that remains after the stripping process is a dark, brown-gold color. Do you have any suggestions for how to fix this problem?
Read MoreOverheated Nickel Sulfamate
We use a nickel sulfamate plating bath with a temperature range of 50–60°C to plate low stress micro-layers. Recently the temperature was allowed to reach 70°C. Did we ruin the plating bath because of this temperature upset? Can the plating bath be salvaged?
Read More
