Počet záznamov: 1
The effect of the focal length position of the focusing lens on the discoloration roughness of plywood under different CO2 laser engraving modes
SYS 0125998 LBL 00000naa^^22^^^^^^^^450 005 20250113101013.9 017 70
$a 10.17423/afx.2024.66.2.07 $2 DOI 100 $a 20250113d m y0sloc0103 ba 101 0-
$a eng 102 $a SK 200 1-
$a The effect of the focal length position of the focusing lens on the discoloration roughness of plywood under different CO2 laser engraving modes $f Zhivko Gochev, Pavlin Vitchev 215 $c Obr., tab. 330 $a The results of a surface roughness study obtained by CO2 laser engraving of birch plywood specimens are presented in the paper. A ZnSe lens with focal length F = 50.8 mm; focal position ∆F = -4, -6, and -8 mm above the material surface; laser beam power P = 4.0, 5.6, and 7.2 W; laser beam scanning speed vf = 250, 260, and 270 mm/s was used for the research. The roughness of the treated surfaces was measured with an electronic profilometer, model Surftest SJ-210 (Mitutoyo – Japan). The experimental results were evaluated via the parameters Ra, Rq, and Rz and analyzed using specialized software Q-StatLab, ANOVA analysis, and interaction diagrams of all parameters, and relevant conclusions and recommendations were made. The analyses indicate that the surfaces of birch plywood treated with a CO2 laser exhibit higher roughness than untreated ones, with a deviation of 2 to 4 times greater for the Ra parameter and 2.2 to 3.9 times greater for the Rz parameter. The primary reason for the difference in surface roughness of CO2 laser-treated materials at different focusing positions on the surface is the varying laser beam power density. A higher beam power density leads to more significant absorbed heat, resulting in increased surface roughen. 463 -1
$1 001 sldk_un_cat*0125930 $1 011 $a 1336-3824 $1 200 1 $a Acta Facultatis Xylologiae Zvolen $e vedecký časopis Drevárskej fakulty $v Vol. 66, no. 2 (2024), s. 75-87 $1 210 $a Zvolen $c Technická univerzita vo Zvolene $d 2024 610 1-
$9 sldk_un_auth*0016209 $a CO2 lasery $X carbon dioxide lasers 610 1-
$9 sldk_un_auth*0058237 $a gravírovanie laserom $X laser engraving 610 1-
$9 sldk_un_auth*h006539 $a brezové drevo $X birch wood 610 1-
$9 sldk_un_auth*h001045 $a preglejky $X plywoods 610 1-
$9 sldk_un_auth*h014831 $a drsnosť obrobenej plochy $X roughness of worked surface 610 1-
$9 sldk_un_auth*h015643 $a drsnosť povrchu $X surface roughness 675 $a 621.9.048.7:762.1.02 $v 2.stred $z slo 675 $a 674.031.21 $v 1. stred. $z slo 675 $a 630*832.282 $v 1. stred. $z slo 675 $a 539.211 $v 1. stred. $z slo 700 -1
$3 sldk_un_auth*0029499 $a Gochev $b Zhivko $4 070 701 -1
$3 sldk_un_auth*0053901 $a Vitchev $b Pavlin $4 070 801 -0
$a SK $b ZV001 $c 20250113 $g AACR2 856 4-
$u https://df.tuzvo.sk/sites/default/files/07-02-24_0.pdf
Počet záznamov: 1