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PROBLEMS WITH BLACK DYED PARTS
Our company manufactures enclosures for the medical and telecommunications industries. Recently, we’ve had rejected parts because the black dye is coming off when the parts are wiped down with DI water.
Ask an Expert Published: 11/1/2008
Anodizing Fundamentals
Question: I have just started my enterprise and couldn’t find any information on anodizing using a high start-up amperage versus a more slow and even increase of amperage within the first seconds of having the load in the tank.
Ask an Expert Published: 8/1/2008
Oxalic Acid Anodizing—the Basics
What are the general processing conditions for oxalic acid anodizing? Are they essentially the same as for sulfuric acid? Can titanium racks be used successfully in this process?
Ask an Expert Published: 2/1/2008
Hardcoat Coating thickness Consistency and Uniformity
My question is, is it possible for the parts to be anodized to more precision than 0.0004–0.0008 inches? What is the Martin process, and who does it?
Ask an Expert Published: 11/1/2007
“Chasing” The Finish
We are thinking about anodizing and before we get any further into that we would like your opinion about that type of finish on this product. Is it practical to do this? What are some of the things we should be aware of as we look for an anodizer?
Ask an Expert Published: 5/1/2007
“Touch-up” For Scratches On Clear Anodized Parts
Is there any recommended practice that you’d recommend that will touch-up scratched clear anodized extrusions other than stripping and rerunning the parts?
Ask an Expert Published: 8/1/2006
Keeping a “No Dump” Etch in Balance
We recently have had a few racks of metal that had a galvanized, over-etched appearance. The problem was coming from the etch tank and the racks were etched the normal amount of time. Do you have any idea what could cause that appearance?
Ask an Expert Published: 5/1/2006
Anodizing “Aluminized” Steel
Is it possible to anodize “aluminized” steel?
Ask an Expert Published: 8/1/2004
"Bleach Test" for Quality of Anodic Seal
What I have learned is that there is a sort of "back pocket" approach for using a bleach test, but there is nothing written or documented that supports this "bleach test." Please tell us anything you can.
Ask an Expert Published: 2/1/2001

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