Jun 10, 2016 0 comment

“Problem … powder coat paint is peeling away from the cut edges of our laser cut parts. Is there any way to remove the oxide coating from the laser cut edge besides using a 3M pad, wire brush, grinding, etc. we are considering using nitrogen as our laser assist gas, but this proves to be an expensive alternative.”

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“Changing the shielding gas will eliminate the oxide problem, but will slow your cutting speed by almost 50%. All the mechanical methods you mentioned will remove this oxide from your laser cuts. There are chemical methods available to remove this inorganic soil. Pickling is the term used to describe this chemical methodology that uses phosphoric acid or citric acid chemistries. The pickling process can be performed by either immersion (dip tank) or spray wash methods.”

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