Larry Chesterfield
Black Anodize on 383 Alloy
Question: We have been asked by one of our very good customers to anodize and dye black some sample pieces of 383 alloy.
Read MorePitting on Anodized Aluminum Handrail
Question: We have seen some dark spots on anodized aluminum handrail.
Read MoreAnodized Aluminum Cookware
Question: We are hard anodizing alloy 3003 aluminum cookware and have a color inconsistency problem.
Read MoreHardcoat Anodizing
Question: We do hardcoat anodizing on 6000 and 7000 series aluminum alloys.
Read MoreScrap Allowance
Question: We are starting an anodizing project with a large automotive company.
Read MoreCleaning/Drying of Optical Components
Question: I am interested in learning how to clean and dry polished optical lenses/parts in one step without streaks or marks on the finished parts.
Read MoreMetal Cleaning
Question: In our business we sometimes have to send parts (old gas tanks, boat tanks, rusted or heavily scaled pieces, etc.) out to be cleaned, stripped or derusted.
Read MoreDichromate Seal Contaminants
Question: In one of your previous columns regarding duplex and dichromate sealing, you stated that small amounts of phosphates and sulfates could affect the quality of the seal.
Read MoreChem Film Staining
Question: I operate a clear and yellow chromating (chem film) Irridite line.
Read MoreAnodic Coating on Rough vs. Smooth Substrate
Question: I am hard anodizing a 7075-T6 hot-forged part for an M-16 machine gun that has the internal cavity and some external features machined prior to anodizing.
Read MoreBlue Anodize for Die-Castings
Question: We have a customer who wants to anodize a 383 alloy die-cast part and color it blue.
Read MoreInterference Coloring
Question: I have heard that there is a process, or processes, to color anodic coatings with colors such as blue, green, red, etc., but the process is not a dye.
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