EP 4217141 A1 20230802 - METHOD FOR LASER CUTTING
Title (en)
METHOD FOR LASER CUTTING
Title (de)
VERFAHREN ZUM LASERSCHNEIDEN
Title (fr)
PROCÉDÉ DE DÉCOUPE AU LASER
Publication
Application
Priority
- DE 102020212088 A 20200925
- EP 2021075299 W 20210915
Abstract (en)
[origin: WO2022063647A1] The invention relates to a method for the laser fusion cutting of a workpiece (2), more particularly a planar workpiece, preferably having a thickness D of at least 1 mm, wherein a laser beam (3) and a cutting gas (24), more particularly nitrogen, with a cutting gas pressure are directed at the workpiece surface (9) by means of a convergent cutting nozzle (1), and wherein the laser power is at least 6 kW, characterized in that the cutting nozzle (1) has a workpiece-side nozzle end face (8), the distance A of which from the workpiece surface is 2 to 8 mm during the cutting, in that the cutting nozzle (1) has a nozzle channel (5) having a diameter dD of 1.5 to 4 mm on the workpiece-side nozzle end face (8), and in that, before the exiting from the cutting nozzle (1), the cutting gas pressure is 15 to 30 bar. Thus, high productivity can be achieved together with reduced risk of collision, i.e. higher process reliability.
IPC 8 full level
B23K 26/38 (2014.01); B23K 26/14 (2014.01)
CPC (source: EP US)
B23K 26/0869 (2013.01 - US); B23K 26/14 (2013.01 - EP); B23K 26/1462 (2015.10 - US); B23K 26/1476 (2013.01 - EP); B23K 26/38 (2013.01 - EP US); B23K 31/10 (2013.01 - US)
Citation (search report)
See references of WO 2022063647A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102020212088 A1 20220331; CN 116209540 A 20230602; EP 4217141 A1 20230802; US 2023219174 A1 20230713; WO 2022063647 A1 20220331
DOCDB simple family (application)
DE 102020212088 A 20200925; CN 202180065466 A 20210915; EP 2021075299 W 20210915; EP 21777725 A 20210915; US 202318187821 A 20230322