Fiber laser marking machine principle detail explanation
The principle is to use a laser beam to apply durable symbols to the surface of various different substances. The effect of marking is to expose the deep material through the evaporation of the surface material. Or to “burn” the traces by the chemical and physical changes of the surface material through light energy. Or to burn off some substances through the light energy. Then it can show the required etching, Image, text. Fiber laser marking machine principle detail explanation.
At that time, the accepted principles were two kinds:
“Hot working” has a laser beam with a higher energy density.
So it is a confluent energy flow that shines on the surface of the material being processed. And the surface of the material absorbs laser energy. Then a heat-up process occurs in the irradiated area. And then the material surface. Or coating temperature rise, abnormality, melting, ablation, evaporation and other appearances.
“Cold working” (ultraviolet) photons with very high energy loads can break chemical bonds in materials.
Extraly organic materials or surrounding media, causing damage to the material in non-thermal processes. And this cold machining is of special significance in laser symbol processing. Because it is not a thermal ablation. But a cold peeling that breaks the chemical bonds without a “thermal hazard” side effect. And therefore does not affect the inner layer and the vicinity of the surface to machine. Then heat or thermal deformation occurs. For example, in the electronics industry, an excimer laser used to deposit a thin film of a chemical substance on a base material. And a narrow groove form in the semiconductor substrate.