Pattern quality analysis when laser engraving illustration on stainless steel

Zucafly, Anis Soraya (2022) Pattern quality analysis when laser engraving illustration on stainless steel. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

In recent years, laser engravings have risen as one of the most promising technologies for engraving or branding an object. The current research will be concentrating on analysing the pattern quality when laser engraving illustrations on stainless steel with the goal of improving it. According to the results of this experiment, the effect of surface roughness and microstructure will be evaluated using the basic parameters of laser engraving, which are laser power, laser speed, laser frequency, and the number of loops in the engraving pattern. To begin, the software packages ImagR and EzCad will be utilised to generate a specific illustration. This was accomplished by engraving a stainless steel workpiece using the Master Oscillator Power Amplifier (MOPA) Fiber Laser employing a combination of specified settings to achieve efficiency on stainless steel for laser engraving colour. An investigation into the relationship between laser engraving on stainless steel and a mixture of factors revealed that a combination of parameters, including frequency, power, speed, and loop count, was critical in getting the best colour finish. A low speed combined with the best feasible number for frequency and power will have a significant influence, as no burn scars will occur and a golden-brownish colour will be attained as a result of using these parameters. In the following step, a surface roughness test will be performed to analyse the surface roughness and microstructure of a stainless steel that has been engraved using a stylus profilometer Mitutoyo Surftest SJ-301 and a digital USB microscope will be performed. The measurement of surface roughness was carried out in order to acquire the roughness value (Ra). The optimal Ra value for laser engraving illustrations on stainless steel is 0.093 (µm) at a speed of 4000 mm/s. After that, microstructure observation was carried out with the help of a Nikon Eclipse LV100 Digital Microscope. When there are no burn traces on the surface, it is considered to have a good surface quality.

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