Liquid Coating
Painted Stainless Steel and Passivation
I believe the input supplied by G.D. in a previous Painting Clinic may be in error. I do not believe that the nascent protective (chromium) oxide layer on the stainless surface needs continuous regeneration so long as nothing damages the surface—and particularly if it is protected from any electrolyte by a paint.
Read MoreViscosity Cups Revisited
There are numerous ASTM Specification covering dip and laboratory-type viscosity cups which address both precision and correct method of use. The importance of temperature control and the nature of Newtonian flow cannot be stressed more and is often overlooked to the detriment of flow cups in general.
Read MoreDip-Spin Painting Equipment
I am interested in finding out information regarding the size of the market for dip spin finishing equipment. Information regarding suppliers of the coatings and equipment would be helpful.
Read MorePainting Type 304 Stainless Steel
I would like to know if it is possible to paint Type 304 stainless steel with a high-solids epoxy-type paint (per MIL-C-22750). If not, can you recommend a paint system that would be more suitable for this alloy? What type of primer is recommended for this surface?
Read MorePowder Coatings vs. Liquids
How do the powder epoxies compare to high-end wet epoxies? Also, how do the zinc phosphate treatments for powder coating compare to a zinc primer? Although we doubt we can beat the zinc/epoxy system we currently have, is it possible properly pretreated steel with a powder epoxy may outperform a zinc/urethane system? Is washing as good as blasting?
Read MoreEpoxy Paints
What is the difference between an epoxy and epoxy-polyamide cured system? Someone said, “it’s the curing agent.” Which one is better.?
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