Investigation of the Role of Certain Factors Affecting the Contrast in Laser Marking

Different methods for laser marking are systematized and discussed in the paper. Today in the practice there are many different methods that could be used to realise high quality on the workpiece of various materials with various shapes. Some materials could be marked only by marking or engraving without special requirements and difficulty, while for other materials one can choose the concrete method about the kind of material, marking type, and the specific needs of the production process and the geometry of detail. This makes it necessary to know, to summarise and systematize in a database all methods for particular lasers and materials, in order to quickly and flexibly respond to the specific needs of each customer by the manufacturies on marking systems. The report studies the specific opportunities and fields of applications of different methods for marking with laser.

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“…For any particular application of laser marking many factors should be taken into account [16,17,18,19,20,21]:…”

Section: Gas Assisted Laser Etch (Gale)mentioning

confidence: 99%

Laser Marking Methods

Lazov

Deneva

Narica

2015

ETR

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“…However, they often further reduce the mechanical strength of the surface. Common strategies for realizing laser marking do not reduce the mechanical strength of the substrate [13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Technological Parameters on Laser Marking Process of Copper Surfaces

Jurčs,

Yankov,

Angelov

et al. 2024

ETR

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Laser marking technology today is a key part of the production of many products and devices used in our daily lives. At the same time, for specific types of products, the process must be optimized depending on the material used, laser system and marking method. Copper is such a metal that has a number of applications in the military industry, electrical engineering, electronics, household, etc. The scientific report investigates the influence of the technological parameters speed, raster step and number of repetitions on the contrast and roughness of marking for copper samples. A fiber laser technology system was used to perform the experiments, and the roughness measurements were performed with an OLS 5000 laser microscope. A wide range of marking speeds from 10 mm/s to 1500 mm/s was selected, where the contrast and roughness behavior of the marking is tracked for different raster steps in both single marking and double marking. It was found that as the speed increased, the contrast and roughness decreased. Also, with double marking, the contrast and roughness values are higher than with single marking. The velocity intervals in which the contrast has positive values and those in which it has negative values are established. The regularity was obtained that increasing the step of the raster leads to a decrease in contrast and an increase in roughness.

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“…For marking on an anodised aluminium sample, it is recommended to use a fiber laser as it produces the darkest colour [14]. The quality of the marking is crucial when handling products in warehouses, sales outlets, and other settings [15].…”

Section: Introductionmentioning

confidence: 99%

Analysing the Influence of Technological Parameters on the Process of Laser Marking of Surface of Anodised Aluminium Samples

Denisova

Pacejs

Yankov

et al. 2023

ETR

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The requirements for marking in terms of contrast and durability are constantly increasing. In order to meet all these challenges, it is necessary to carry out research leading to the optimisation and increase in efficiency of the technological process of laser marking. In the case of aluminium, the contrast and durability of the marking depend on the values of the laser marking parameters. In order to determine the optimal laser marking method, experimental studies have been carried out, controlling the power, speed, frequency, pulse duration and line raster step for a specific anodised aluminium. The studies carried out were analysed and subsequently optimized to obtain a contrast marking. A Rofin PowerLine F 20 Varia fiber laser system and aluminium alloy 1050 with anodised surface were used for the research. The surface changes after the laser treatment were analysed using a laser scanning microscope and contrast determination method. The dependence of contrast and roughness on speed, power, frequency and raster step was analysed. Comparative plots of contrast and roughness variations versus laser marking technological parameters were constructed.

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Investigation of the Role of Certain Factors Affecting the Contrast in Laser Marking

Abstract: An investigation has been made of dependence of marking contrast on surface roughness, spacing between hatches (that is the pitch between hatches) and the speed for products made of tool steel. Experiments made concern pulse laser CuBr utilizing МОРА system.

Cited by 8 publications

References 1 publication

Laser Marking Methods

Laser Marking Methods

Influence of Technological Parameters on Laser Marking Process of Copper Surfaces

Analysing the Influence of Technological Parameters on the Process of Laser Marking of Surface of Anodised Aluminium Samples

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