Flux Flux in laser engraving refers to a chemical compound or additive applied to metal surfaces to facilitate engraving, welding, or soldering processes. Flux helps remove oxides, impurities, and surface contaminants from the metal substrate, improving the wetting and adhesion of molten metal during engraving. In laser engraving, flux may be applied manually or integrated into engraving materials such as solder pastes or flux-coated metals, enhancing engraving quality and efficiency, particularly when working with challenging materials or alloys. |