CO_2レーザによる鋼板の切断精度 : 切断面の粗さについて

概要

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Steel (SPCC) and stainless steel (SUS) plates were cut with CO_2.laser and the cutting accuracy was studied, As the accuracy kerf width, form accuracy, surface roughness of cut section and so on. should be in cosideration, however, among these, particularly the roughness was investigated in detail, Center line average height Ra and power spectra of surface profile were measured and the effects of work material and cutting condition on the roughness were examined, Also the mechanism producing roughness were discussed, Main results obtained are as follows : (1) The surface texture varies in dependence on kind of work material, cutting speed, position of focal point and pressure and kind of assist gas, also it changes in the per-pendicular direction to cutting direction on one surface. Under specified condition many grooves with nearly equal pitch are observed, (2) Value of R_a is about 1μm for SPCC and 2μm for SUS under the best condition, (3) Power spectra vary in dependence on the above-mentioned factors, too, and it can very precisely express the charac-teristics of laser cut surface with relation to above-mentioned surface texture, (4) Under the condi-tion using Ar gas compared with using 0_2 gas laser cutting is difficult and the surface roughness of cut section is large,
社団法人精密工学会の論文
1984-12-05