Quantitative study of melt flow dynamics inside laser cutting kerfs by in-situ high-speed video-diagnostics

被引：10

作者：

Arntz, D. ^{[1
]}

Petring, D. ^{[2
]}

Stoyanov, S. ^{[2
]}

Quiring, N. ^{[1
]}

Poprawe, R. ^{[1
,2
]}

机构：

[1] Rhein Westfal TH Aachen, Chair Laser Technol LLT, Steinbachstr 15, D-52074 Aachen, Germany

[2] Fraunhofer Inst Laser Technol ILT, Steinbachstr 15, D-52074 Aachen, Germany

来源：

10TH CIRP CONFERENCE ON PHOTONIC TECHNOLOGIES [LANE 2018] | 2018年 / 74卷

关键词：

Laser cutting; 1 micron laser; high-speed imaging; melt flow; process diagnostics;

D O I：

10.1016/j.procir.2018.08.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Within this paper the melt flow dynamics of the laser cutting process during laser cutting of 6 mm thick stainless-steel using a disk laser with a laser power of 5 kW and nitrogen assist gas with a pressure up to 20 bar, is analyzed by in-situ high-speed video-diagnostics (>100,000 fps). An advanced algorithm is used to determine spatially resolved the melt flow dynamics on the laser cutting front. The results reveal a link between the fluid dynamics, the cutting velocity, the assist gas pressure and the average roughness of the cut flank. (C) 2018 The Authors. Published by Elsevier Ltd.

引用

页码：640 / 644

页数：5

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