Sealing with Distilled Water
Q. Can distilled water be substituted for deionized water? Our plating facility can fairly easily create a distilled water heated bath, but a deionized bath would be much more expensive. —C.A.
A. Yes, distilled water can certainly be used. In fact, distilled water is probably more reliable from a quality standpoint than deionized (DI) water. DI water can allow for wide quality variability during a given run. Distilled water should be good all the time. There is no such thing as “partially distilled” unless distilled is mixed with water of lower quality. It’s all about the amount of dissolved solids in the water. Distilled water should have none. Whether DI or distilled, the lower limit of “high quality” water is 200,000 Ohms resistance, which is the same as 5 microseimens specific conductance. When the water quality in a run reaches these numbers the quality of the water is no longer acceptable.
Benefits of anodizing include durability, color stability, ease of maintenance, aesthetics, cost of initial finish and the fact that it is a safe and healthy process. Maximizing these benefits to produce a high–performance aluminum finish can be accomplished by incorporating test procedures in the manufacturing process.
Many industries that require innovative solutions in cost reduction and weight savings are turning to aluminum as a substitute for stainless steel and other carbon steel alloys for parts and components.
Question: What is the best way to strip an anodize coating?