Dimensional analyses and surface quality of the laser cutting process for engineering plastics

Effect of process parameters and optimization of CO2 laser cutting of ultra high-performance polyethylene

“…On the other hand, if reducing the operating cost is more important, it is verified that, the minimum laser power has to be applied with maximum cutting speed of 1750 mm/min and focal point position ranged from -2.51 to -1.5 mm have to be used. In comparison between the two criteria and with regard to the quality of the cut section, the cut section roughness for the first criterion is on average 44% smoother than the one of the second criterion, this improvement in the surface quality support the conclusion made by Kurt [9]. Although, the cutting cost is certainly higher in the first criterion as the laser power is higher along with slower cutting speed, but the quality of the cut section is better if the optimal factors combinations in the first criterion are used.…”

“…Alternatively, if the reduction in the cutting cost is essential, it is confirmed that, the minimum laser power of 900 W has to be applied with maximum cutting speed of 1400 mm/min and focal point position ranged from -4.74 mm to -3.43 mm have to be used. In contrast between the two criteria and with regard to the quality of the cut section, the cut section roughness for the first criterion is on average 33% smoother than the one of the second criterion, which is in agreement with Kurt [9]. Table 11 lists the optimal setting of process factors and the corresponding responses values for both criteria for 10 mm UHMWPE.…”

“…Also, laser power and cutting speed as well as focal point position have to be monitored and optimized to facilitate the desirable surface quality or kerfs dimensions, as reported by Kurt et al [9]. Therefore, it's better to find out the optimal cutting conditions at which the desirable quality or cost saving of the cutting can be achieved.…”

“…Kurt Et al. [9] have concluded that the cutting speed and laser power must be regulated and optimized in order to obtain the desired dimensions and also, to enhance the surface quality and roughness values. Many authors [10][11][12] have applied DOE to investigate the effect of the factors of a certain process on several outputs and to find the mathematical relationship in order to define the optimal conditions.…”

The influence of organobentonite clay on CO2 laser grooving of nylon 6 composites

“…Typically, laser processing of polymers is performed using excimer lasers: 157-355 nm [2], 248 nm [3], 308 nm [4]; solid-state lasers with fundamental or harmonics generation: 395/790 nm [5], 532/1,064 nm [6], 1,064 nm [6,7]; and CO 2 lasers 10.6 μm [4,[8][9][10][11][12]. In terms of the laser pulse duration, both ultra-short (femtosecond [13], and picosecond [14]), as well as long (microsecond) or continuous operation lasers [8][9][10][11][12] can be utilized.…”