Clean technology pre-treatment lasers: The new tool in surface for superior coating adhesion
COATINGS AND ANTI CORROSION ENGINEERING REVIEW|April/May 2023
Laser systems remove corrosion, grease, residue, and existing coatings from metal surfaces quickly, with less preparation and mess than traditional techniques
Clean technology pre-treatment lasers: The new tool in surface for superior coating adhesion

Most manufacturers understand the value of pretreating metal surfaces of parts to remove corrosion, grease, residue, old coatings, or to roughen the surface of metals prior to coating. By ensuring the items are cleaned down to bare metal, manufacturers can avoid costly warranty issues that result when coatings peel, flake, bubble, or otherwise fail prematurely.

Unfortunately, the traditional techniques used for this purpose - such as sandblasting, dry ice blasting, and chemical stripping - are messy and require expensive consumables, as well as substantial time for preparation and cleanup. These methods are also drawing scrutiny from regulators like the EPA and OSHA since they can pose risks to the environment and applicators.

Today, a more effective alternative is utilizing industrial-grade, precision laser-based systems that can remove paint, contaminants, rust, and residues with a high-energy laser beam that leaves the substrate unaffected. Preparation and cleanup time are minimal, and the low-maintenance equipment can last decades.

According to Vincent Galiardi, owner of Galiardi Laser Clean, a surface cleaning operator based in St Charles County, Missouri, many people are surprised to learn that clean technology lasers are the most cost-effective, efficient, and safest method of industrial surface preparation.

"Many people are unfamiliar with the use of lasers to pretreat metal surfaces," says Galiardi. "When I do a demonstration, at first the people in attendance are skeptical. But after I use the laser to treat a small area, everyone starts talking and getting excited. By the end, when I let them try the equipment, everyone is having a good time and saying how great the laser works."

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