Powder Coating Laser Cut Edges

Machine sits in the middle of four laser cutting machines.

Powder coating laser cut edges.

News machining fabrication laser cutting powder coating jobs contact laser cutting. When chipping was first seen on powder coated parts many people thought it was because the edge was so sharp. Laser cutting machines provide manufacturers with an effective means to cut blanks of all shapes with burr free edges in a matter of seconds. The issue with paint adhesion in this area is due to the formation of heat scale on the edge of the steel.

We have started manufacturing parts using a laser. The danger of powder coating laser cut edges. After reading many different views on this and my own opinion is that paint will not adhere fully to a sharp edge. Today the 107 5 by 59 1 by 60 2 in.

We have a bystronic bysprint 3015 6kw fiber laser cutting machine at our main facility in petersburg which can cut sheet sizes up to 5 x 10 1500 x 3000 mm. The parts are laser cut and powder coated. Nope this is a first time question. The absence of oxidation improves downstream processes such as powder coating and welding because better adhesion and weldability can be achieved.

Laser cutting is a thermal process and. This system will not remove the carbon. Powder coating systems give manufacturers an environmentally friendly and cost effective way to apply a finish to metal products that stands up to the rigors of the most challenging environments. When oxide scale created by laser cutting is painted over the part being finished is susceptible to adhesion failures.

As steel is cut with a laser a very thin hard oxide is formed on the sharp edge. Nitrogen purity levels play a large role in edge and part quality. However one of the problems inherent to laser cutting is the blue oxide edge it leaves on carbon steel. To avoid paint chips on the finished part edge remove the laser scale prior to finishing.

Acid pickling is one method that coaters can use to prepare their laser cut parts prior to finishing them. The only way around this would be to put a chamfer onto all sharp edges this is a massive cost and process change. Powder coatings don t like to adhere to this oxidized surface. Pretreating laser cut material for powder coating.

The chipping you refer to with powder coating is a loss of adhesion due to little if any pretreatment on the laser cut edge. You can improve a fiber laser blanking s cut edge by optimizing the assist gases and nozzle technologies. Laser cut material edges are typically high quality but there will be a minor burr on the bottom side of the cut. Wayne duguay houston.

The chipping reject. An ongoing discussion from 1999 through 2015.