Month: July 2021

“Soft” Metal Staining, Post Cleaning

I work with many metal finishers that clean the “soft” metals, specifically aluminum and copper alloys.  One common, and more recurring issue I see, is staining of these alloys after the forming lubricants are removed in a cleaning step. In the push to go green, many fabricators are switching to water emulsifiable metal working fluids…. Read more »

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