Powder Coating Q&A: Treatment for Stainless Steel
How do I pretreat stainless steel?
Q. I have a requirement for powder coating stainless steel grade 202 material and I want to know the process, especially the pretreatment process to prepare the surface for powder coating.
A. Stainless steel is chemically inert, so there is no perfect chemical treatment for adhesion of a powder coating. I suggest you media blast the surface to roughen it for a good mechanical bond. The media blast creates more surface and rough pattern that can be very effective. Application and curing are the same as any other metal substrate. Make sure the surface is free of dust, dirt and oil and be sure the part is connected to earth ground. Apply the appropriate layer of powder and cure according to the cycle recommended by the supplier of the powder.
Originally published in the September 2015 issue.
Related Content
-
Products Finishing Reveals 2023 Qualifying Top Shops
Each year PF conducts its Top Shops Benchmarking Survey, offering shops a tool to better understand their overall performance in the industry. The program also recognizes shops that meet a set of criteria to qualify as Top Shops.
-
Curing Oven Basics
Simply heating up the substrate does not cure the coating. There are many variables to consider when choosing the best cure oven for your application...
-
Powder Coating 4.0: Smarter, Faster, More Efficient and Connected
New tools reduce cost and waste, lower manufacturing footprint of powder coating operations.
